N-Q

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED
MANAGEMENT INVESTMENT COMPANIES

Investment Company Act File Number 811-1629

RIVERSOURCE DIMENSIONS SERIES, INC.

(Exact name of registrant as specified in charter)

50606 Ameriprise Financial Center, Minneapolis, Minnesota	55474
(Address of principal executive offices)	(Zip code)

Scott R. Plummer — 5228 Ameriprise Financial Center, Minneapolis, MN 55474

(Name and address of agent for service)

Registrant’s telephone number, including area code: (612) 671-1947

Date of fiscal year end: 7/31

Date of reporting period: 4/30

Portfolio of Investments
RiverSource Disciplined Small and Mid Cap Equity Fund
April 30, 2010 (Unaudited)

(Percentages represent value of investments compared to net assets)

Investments in Securities

Common Stocks (98.2%)

Issuer	Shares			Value(a)
Aerospace & Defense (0.8%)
BE Aerospace, Inc.		7,945	(b)	$	236,046
Ceradyne, Inc.		12,801	(b)		284,182
Esterline Technologies Corp.		2,894	(b)		161,427
Spirit Aerosystems Holdings, Inc., Class A		10,979	(b)		243,514
Triumph Group, Inc.		4,422	(d)		342,971
Total					1,268,140
Air Freight & Logistics (0.5%)
Air Transport Services Group, Inc.		35,833	(b)		197,082
Atlas Air Worldwide Holdings, Inc.		10,010	(b)		553,252
Total					750,334
Airlines (1.5%)
AirTran Holdings, Inc.		39,823	(b,d)		210,265
Alaska Air Group, Inc.		12,304	(b,d)		509,510
Allegiant Travel Co.		4,661	(b,d)		239,715
Continental Airlines, Inc., Class B		18,048	(b)		403,373
Delta Air Lines, Inc.		29,466	(b)		355,949
Hawaiian Holdings, Inc.		36,341	(b,d)		258,021
Skywest, Inc.		32,278	(d)		483,524
Total					2,460,357
Auto Components (1.8%)
ArvinMeritor, Inc.		18,188	(b)		278,640
Autoliv, Inc.		13,331	(b,c,d)		729,873
Cooper Tire & Rubber Co.		16,254	(d)		344,910
Dana Holding Corp.		24,079	(b)		321,695
Exide Technologies		23,722	(b)		140,909
Spartan Motors, Inc.		29,436	(d)		181,620
Tenneco, Inc.		13,857	(b,d)		357,095
The Goodyear Tire & Rubber Co.		11,138	(b)		149,583
TRW Automotive Holdings Corp.		10,859	(b)		349,768
Total					2,854,093
Biotechnology (0.6%)
Cephalon, Inc.		3,516	(b,d)		225,727
Cubist Pharmaceuticals, Inc.		10,413	(b,d)		233,459
PDL BioPharma, Inc.		54,074	(d)		314,711
Pharmasset, Inc.		5,180	(b,d)		167,832
Total					941,729
Building Products (0.3%)
Apogee Enterprises, Inc.		19,482	(d)		267,683
Quanex Building Products Corp.		11,796			224,124
Total					491,807

Issuer	Shares			Value(a)
Capital Markets (2.0%)
Apollo Investment Corp.		59,380	(d)		722,062
BGC Partners, Inc., Class A		42,381			276,324
GFI Group, Inc.		22,904			158,038
Jefferies Group, Inc.		18,103	(d)		492,764
Knight Capital Group, Inc., Class A		23,808	(b)		370,214
MF Global Holdings Ltd.		23,932	(b,d)		220,653
MVC Capital, Inc.		7,749			109,493
optionsXpress Holdings, Inc.		7,299	(b,d)		129,557
Raymond James Financial, Inc.		20,880	(d)		639,763
SWS Group, Inc.		13,292	(d)		147,142
Total					3,266,010
Chemicals (4.3%)
Ashland, Inc.		11,548			687,799
Cabot Corp.		5,038			163,937
CF Industries Holdings, Inc.		9,263			775,068
Cytec Industries, Inc.		8,176			392,939
Eastman Chemical Co.		3,128			209,326
Huntsman Corp.		39,932			455,624
Innophos Holdings, Inc.		11,922			339,658
Lubrizol Corp.		3,245			293,153
NewMarket Corp.		3,761	(d)		413,710
Olin Corp.		30,073	(d)		631,533
OM Group, Inc.		10,630	(b,d)		401,283
PolyOne Corp.		24,288	(b,d)		274,697
Solutia, Inc.		15,392	(b,d)		270,899
Stepan Co.		5,549	(d)		420,337
WR Grace & Co.		43,038	(b)		1,243,367
Total					6,973,330
Commercial Banks (1.1%)
Bancfirst Corp.		4,720	(d)		208,341
SVB Financial Group		15,929	(b,d)		784,184
TowneBank		14,586			233,814
Trico Bancshares		10,072	(d)		191,771
Wintrust Financial Corp.		4,934			184,038
Zions Bancorporation		9,533	(d)		273,883
Total					1,876,031
Commercial Services & Supplies (1.5%)
Consolidated Graphics, Inc.		3,020	(b)		126,568
Corrections Corp of America		9,446	(b)		195,721
Herman Miller, Inc.		10,765	(d)		228,433
Kimball International, Inc., Class B		24,290	(d)		195,292
RR Donnelley & Sons Co.		27,390			588,610
Steelcase, Inc., Class A		29,467	(d)		241,924
The Brink’s Co.		16,320			434,602
United Stationers, Inc.		5,008	(b)		306,590
Viad Corp.		8,534	(d)		199,696
Total					2,517,436
Communications Equipment (1.0%)
Blue Coat Systems, Inc.		8,233	(b,d)		267,819
JDS Uniphase Corp.		13,742	(b)		178,509
Netgear, Inc.		9,591	(b)		259,532
Plantronics, Inc.		13,793			457,928
Tellabs, Inc.		47,291			429,402
Total					1,593,190

Issuer	Shares			Value(a)
Computers & Peripherals (1.8%)
Lexmark International, Inc., Class A		15,751	(b)		583,575
NCR Corp.		26,010	(b)		342,292
Seagate Technology		48,026	(b,c)		882,237
Western Digital Corp.		28,530	(b)		1,172,297
Total					2,980,401
Construction & Engineering (2.8%)
Comfort Systems USA, Inc.		24,370	(d)		343,130
EMCOR Group, Inc.		33,476	(b)		956,074
Fluor Corp.		24,434			1,291,092
Granite Construction, Inc.		10,147	(d)		341,041
KBR, Inc.		30,645			676,641
Layne Christensen Co.		8,275	(b)		226,570
The Shaw Group, Inc.		8,035	(b)		307,580
Tutor Perini Corp.		15,945	(b,d)		386,985
Total					4,529,113
Consumer Finance (0.7%)
Advance America Cash Advance Centers, Inc.		28,231	(d)		161,481
Cash America International, Inc.		8,828	(d)		327,166
Discover Financial Services		31,881			492,880
Ezcorp, Inc., Class A		9,190	(b,d)		190,325
Total					1,171,852
Containers & Packaging (0.3%)
Rock-Tenn Co., Class A		5,642	(d)		291,127
Temple-Inland, Inc.		7,446			173,641
Total					464,768
Distributors (0.1%)
Core-Mark Holding Co., Inc.		5,920	(b,d)		180,678
Diversified Consumer Services (0.7%)
Corinthian Colleges, Inc.		14,138	(b,d)		220,836
Pre-Paid Legal Services, Inc.		4,519	(b,d)		200,960
Regis Corp.		17,357	(d)		331,865
Sotheby’s		9,217	(d)		307,848
Total					1,061,509
Diversified Telecommunication Services (1.0%)
CenturyTel, Inc.		29,423			1,003,618
Qwest Communications International, Inc.		128,046			669,681
Total					1,673,299
Electric Utilities (0.7%)
Edison International		33,227			1,142,012
Electrical Equipment (0.7%)
EnerSys		12,131	(b)		313,950
General Cable Corp.		8,078	(b,d)		230,788
GrafTech International Ltd.		32,855	(b)		553,936
Total					1,098,674
Electronic Equipment, Instruments & Components (2.9%)
Agilent Technologies, Inc.		7,908	(b)		286,744
Anixter International, Inc.		13,027	(b,d)		682,614
Arrow Electronics, Inc.		11,100	(b)		338,550

Issuer	Shares			Value(a)
Avnet, Inc.		9,011	(b)		288,082
Benchmark Electronics, Inc.		14,414	(b)		311,919
Ingram Micro, Inc., Class A		27,466	(b)		498,783
Insight Enterprises, Inc.		18,381	(b,d)		276,266
Jabil Circuit, Inc.		19,847			304,056
Littelfuse, Inc.		8,894	(b,d)		375,594
Methode Electronics, Inc.		19,678	(d)		218,426
Plexus Corp.		7,141	(b,d)		264,574
SYNNEX Corp.		9,983	(b,d)		273,734
Tech Data Corp.		12,384	(b)		531,273
Total					4,650,615
Energy Equipment & Services (5.6%)
Atwood Oceanics, Inc.		11,487	(b)		418,242
Baker Hughes, Inc.		6,121			304,559
Bristow Group, Inc.		5,556	(b,d)		215,073
Cal Dive International, Inc.		21,323	(b)		139,879
CARBO Ceramics, Inc.		5,510	(d)		403,608
Complete Production Services, Inc.		17,022	(b)		256,862
Diamond Offshore Drilling, Inc.		8,652	(d)		684,373
Dril-Quip, Inc.		6,792	(b,d)		393,461
Gulfmark Offshore, Inc., Class A		10,747	(b,d)		370,449
Helmerich & Payne, Inc.		12,433	(d)		505,028
Key Energy Services, Inc.		40,497	(b,d)		440,000
Lufkin Industries, Inc.		8,749			744,801
Matrix Service Co.		18,024	(b)		191,595
Oil States International, Inc.		7,538	(b)		364,161
Parker Drilling Co.		54,091	(b,d)		299,123
Patterson-UTI Energy, Inc.		13,971	(d)		213,617
Pride International, Inc.		23,979	(b)		727,282
Rowan Companies, Inc.		20,868	(b)		621,866
SEACOR Holdings, Inc.		2,858	(b)		240,558
Superior Energy Services, Inc.		12,247	(b,d)		331,404
Tetra Technologies, Inc.		23,066	(b)		283,481
Tidewater, Inc.		10,106			541,783
Unit Corp.		4,876	(b)		232,927
Willbros Group, Inc.		20,524	(b)		257,576
Total					9,181,708
Food & Staples Retailing (2.6%)
BJ’s Wholesale Club, Inc.		15,623	(b,d)		598,048
Ingles Markets, Inc., Class A		10,711			171,697
Nash Finch Co.		5,099	(d)		178,567
Ruddick Corp.		12,569	(d)		444,188
Safeway, Inc.		41,739	(d)		985,041
Spartan Stores, Inc.		12,197	(d)		184,053
SUPERVALU, Inc.		32,758			488,094
The Andersons, Inc.		3,961			143,151
The Pantry, Inc.		14,970	(b)		236,825
Whole Foods Market, Inc.		10,191	(b,d)		397,653
Winn-Dixie Stores, Inc.		28,298	(b,d)		356,838
Total					4,184,155
Food Products (1.2%)
American Italian Pasta Co., Class A		5,696	(b,d)		223,454
Cal-Maine Foods, Inc.		8,223	(d)		274,484
Chiquita Brands International, Inc.		15,968	(b,d)		240,159
Darling International, Inc.		20,958	(b,d)		198,891
Dean Foods Co.		40,025	(b)		628,392
Fresh Del Monte Produce, Inc.		19,703	(b,c,d)		411,202
Total					1,976,582

Issuer	Shares			Value(a)
Gas Utilities (0.4%)
Oneok, Inc.		2,747			134,988
Questar Corp.		6,310			302,564
The Laclede Group, Inc.		5,366			182,873
Total					620,425
Health Care Equipment & Supplies (1.3%)
ev3, Inc.		23,353	(b,d)		446,743
Hill-Rom Holdings, Inc.		3,610	(d)		114,473
Intuitive Surgical, Inc.		2,951	(b,d)		1,064,012
Sirona Dental Systems, Inc.		6,081	(b,d)		253,517
STERIS Corp.		6,849	(d)		227,935
Total					2,106,680
Health Care Providers & Services (5.5%)
AMERIGROUP Corp.		18,284	(b)		662,612
Catalyst Health Solutions, Inc.		4,283	(b,d)		181,214
Centene Corp.		21,848	(b,d)		500,319
CIGNA Corp.		38,790			1,243,608
Coventry Health Care, Inc.		23,890	(b)		567,149
Emergency Medical Services Corp., Class A		5,039	(b,d)		266,462
Health Net, Inc.		15,514	(b)		341,618
Healthspring, Inc.		31,969	(b)		562,654
Humana, Inc.		26,566	(b)		1,214,598
Kindred Healthcare, Inc.		27,824	(b,d)		496,380
Lincare Holdings, Inc.		12,328	(b,d)		575,594
Magellan Health Services, Inc.		22,468	(b)		948,374
Molina Healthcare, Inc.		11,081	(b,d)		323,233
Sun Healthcare Group, Inc.		18,864	(b,d)		168,644
Triple-S Management Corp., Class B		14,760	(b,c,d)		268,632
Universal American Corp.		18,692	(b,d)		286,922
WellCare Health Plans, Inc.		13,446	(b)		384,959
Total					8,992,972
Hotels, Restaurants & Leisure (0.5%)
Brinker International, Inc.		9,924	(d)		183,792
Las Vegas Sands Corp.		10,753	(b,d)		267,320
Wyndham Worldwide Corp.		15,669			420,086
Total					871,198
Household Durables (2.7%)
American Greetings Corp., Class A		13,283			326,230
Garmin Ltd.		16,586	(c,d)		619,985
Harman International Industries, Inc.		9,018	(b)		356,031
National Presto Industries, Inc.		1,045	(d)		117,009
Stanley Black & Decker, Inc.		14,783			918,763
Tupperware Brands Corp.		15,345			783,669
Whirlpool Corp.		11,900	(e)		1,295,553
Total					4,417,240
Independent Power Producers & Energy Traders (1.1%)
Constellation Energy Group, Inc.		25,016			884,316
Mirant Corp.		26,927	(b)		313,969
NRG Energy, Inc.		22,078	(b)		533,625
Total					1,731,910

Issuer	Shares			Value(a)
Industrial Conglomerates (0.8%)
McDermott International, Inc.		15,703	(b)		430,419
Seaboard Corp.		222	(d)		324,122
Textron, Inc.		20,662			471,921
Total					1,226,462
Insurance (9.2%)
Allied World Assurance Co. Holdings Ltd.		7,393	(c)		322,113
American Financial Group, Inc.		15,861			466,789
American Physicians Capital, Inc.		5,376	(d)		179,773
AMERISAFE, Inc.		11,109	(b,d)		189,964
Amtrust Financial Services, Inc.		14,509	(d)		197,758
Arch Capital Group Ltd.		4,193	(b,c)		316,907
Argo Group International Holdings Ltd.		10,766	(c,d)		355,170
Aspen Insurance Holdings Ltd.		8,687	(c)		234,375
Axis Capital Holdings Ltd.		6,056	(c)		188,766
CNA Surety Corp.		8,227	(b,d)		137,967
Conseco, Inc.		109,422	(b)		645,590
Employers Holdings, Inc.		23,501	(d)		387,296
Endurance Specialty Holdings Ltd.		7,608	(c)		280,355
FBL Financial Group, Inc., Class A		6,838	(d)		176,694
First American Corp.		7,465			258,065
Flagstone Reinsurance Holdings Ltd.		18,074	(c,d)		201,525
FPIC Insurance Group, Inc.		6,414	(b,d)		174,589
Genworth Financial, Inc., Class A		65,393	(b)		1,080,293
Greenlight Capital Re Ltd., Series A		5,582	(b,c)		143,011
Hartford Financial Services Group, Inc.		26,887			768,162
HCC Insurance Holdings, Inc.		13,992			380,442
Horace Mann Educators Corp.		23,121	(d)		397,912
Lincoln National Corp.		26,933			823,880
Max Capital Group Ltd.		9,339	(c)		208,260
Meadowbrook Insurance Group, Inc.		17,729	(d)		140,059
Montpelier Re Holdings Ltd.		15,112	(c)		250,859
National Financial Partners Corp.		22,382	(b)		344,459
PartnerRe Ltd.		9,044	(c)		701,634
Platinum Underwriters Holdings Ltd.		28,618	(c)		1,064,876
Principal Financial Group, Inc.		36,826			1,076,056
ProAssurance Corp.		13,219	(b)		805,698
Protective Life Corp.		14,447			347,739
RenaissanceRe Holdings Ltd.		6,430	(c)		359,759
Safety Insurance Group, Inc.		7,026	(d)		262,000
SeaBright Insurance Holdings, Inc.		15,885	(d)		172,829
StanCorp Financial Group, Inc.		6,908	(d)		310,584
Validus Holdings Ltd.		7,180	(c)		183,593
White Mountains Insurance Group Ltd.		924			317,486
Zenith National Insurance Corp.		2,538			95,987
Total					14,949,274
Internet & Catalog Retail (0.2%)
Drugstore.Com, Inc.		31,318	(b)		114,624
Liberty Media Corp. – Interactive, Class A		14,332	(b,g)		220,283
Total					334,907
Internet Software & Services (0.6%)
Earthlink, Inc.		65,986	(d)		595,194
GSI Commerce, Inc.		5,237	(b,d)		142,708
IAC/InterActiveCorp.		8,387	(b)		188,037
LivePerson, Inc.		14,043	(b)		115,995
Total					1,041,934

Issuer	Shares			Value(a)
IT Services (2.4%)
Acxiom Corp.		7,953	(b)		151,743
Ciber, Inc.		33,810	(b,d)		134,226
Cognizant Technology Solutions Corp., Class A		7,055	(b)		361,075
Computer Sciences Corp.		22,728	(b)		1,190,721
Convergys Corp.		15,744	(b,d)		199,004
CSG Systems International, Inc.		11,159	(b)		253,532
Heartland Payment Systems, Inc.		12,806	(d)		235,374
Ness Technologies, Inc.		24,575	(b,c)		159,000
SAIC, Inc.		46,240	(b,d)		805,038
TeleTech Holdings, Inc.		9,087	(b)		150,390
Unisys Corp.		7,852	(b,d)		220,013
Total					3,860,116
Leisure Equipment & Products (0.7%)
Brunswick Corp.		9,676	(d)		202,228
Eastman Kodak Co.		57,429	(b,d)		351,466
Jakks Pacific, Inc.		19,935	(b,d)		304,806
Polaris Industries, Inc.		4,548			269,105
Total					1,127,605
Machinery (3.8%)
AGCO Corp.		11,567	(b,d)		405,076
Altra Holdings, Inc.		9,073	(b,d)		137,547
Bucyrus International, Inc.		8,488			534,829
Chart Industries, Inc.		17,509	(b,d)		402,532
Cummins, Inc.		7,537			544,398
EnPro Industries, Inc.		5,393	(b)		170,311
Force Protection, Inc.		35,930	(b)		192,226
FreightCar America, Inc.		6,680	(d)		191,182
Joy Global, Inc.		3,656			207,697
LB Foster Co., Class A		5,957	(b)		176,327
Mueller Industries, Inc.		11,774			349,099
Navistar International Corp.		4,870	(b)		235,416
Nordson Corp.		11,671			838,210
Oshkosh Corp.		14,100	(b)		544,542
SPX Corp.		1,947			136,056
Terex Corp.		13,561	(b,d)		359,638
The Manitowoc Co., Inc.		16,561	(d)		232,020
Timken Co.		11,030			388,035
WABCO Holdings, Inc.		6,938	(b)		230,272
Total					6,275,413
Media (1.8%)
CBS Corp., Class B		48,097			779,652
DISH Network Corp., Class A		31,258			692,365
Gannett Co., Inc.		19,777	(d)		336,605
Lamar Advertising Co., Class A		4,322	(b)		160,865
Liberty Media Corp. – Capital, Series A		5,612	(b,g)		248,443
The Interpublic Group of Companies, Inc.		48,485	(b)		432,001
Virgin Media, Inc.		17,637			310,235
Total					2,960,166
Metals & Mining (2.7%)
AK Steel Holding Corp.		9,681	(d)		162,157
Allegheny Technologies, Inc.		5,141	(d)		274,889
Brush Engineered Materials, Inc.		5,807	(b,d)		172,642
Carpenter Technology Corp.		6,638	(d)		260,674
Century Aluminum Co.		14,864	(b)		200,367

Issuer	Shares			Value(a)
Cliffs Natural Resources, Inc.		13,301			831,711
Commercial Metals Co.		8,378	(d)		124,665
Horsehead Holding Corp.		8,199	(b,d)		97,404
Kaiser Aluminum Corp.		4,120	(d)		165,583
Olympic Steel, Inc.		6,562	(d)		208,540
Reliance Steel & Aluminum Co.		5,825	(d)		284,318
RTI International Metals, Inc.		9,210	(b,d)		249,131
United States Steel Corp.		14,170	(d)		774,532
Walter Energy, Inc.		5,448			440,253
Worthington Industries, Inc.		12,909			206,157
Total					4,453,023
Multiline Retail (0.6%)
Big Lots, Inc.		4,249	(b)		162,312
Dillard’s, Inc., Class A		12,797	(d)		359,339
JC Penney Co., Inc.		8,540	(e)		249,112
Nordstrom, Inc.		5,848	(d)		241,698
Total					1,012,461
Oil, Gas & Consumable Fuels (5.3%)
ATP Oil & Gas Corp.		13,672	(b)		249,651
Bill Barrett Corp.		8,171	(b)		278,468
Cimarex Energy Co.		6,484			441,431
CVR Energy, Inc.		16,462	(b,d)		139,762
Forest Oil Corp.		8,272	(b,d)		242,370
Frontier Oil Corp.		14,296	(d)		217,299
Frontline Ltd.		7,726	(c,d)		281,999
Gran Tierra Energy, Inc.		52,838	(b,c,d)		320,198
Knightsbridge Tankers Ltd.		10,267	(c)		194,457
Massey Energy Co.		8,931			327,143
McMoRan Exploration Co.		21,618	(b,d)		258,119
Murphy Oil Corp.		24,009	(e)		1,444,140
Overseas Shipholding Group, Inc.		2,492			124,750
Patriot Coal Corp.		16,874	(b)		332,249
Penn Virginia Corp.		12,478	(d)		318,314
Petroleum Development Corp.		9,322	(b,d)		218,228
Rosetta Resources, Inc.		18,002	(b,d)		448,250
St. Mary Land & Exploration Co.		9,404			378,417
Stone Energy Corp.		10,998	(b,d)		179,267
Sunoco, Inc.		12,303			403,292
Swift Energy Co.		8,629	(b)		312,197
Tesoro Corp.		18,449	(d)		242,604
Western Refining, Inc.		24,057	(b,d)		128,946
Whiting Petroleum Corp.		5,986	(b,d)		540,715
World Fuel Services Corp.		19,090	(d)		542,729
Total					8,564,995
Paper & Forest Products (1.2%)
Clearwater Paper Corp.		6,603	(b)		420,479
Domtar Corp.		2,174	(b,c)		154,006
International Paper Co.		31,158			833,166
KapStone Paper and Packaging Corp.		10,878	(b)		140,326
Schweitzer-Mauduit International, Inc.		6,946			395,366
Total					1,943,343
Personal Products (0.2%)
Nu Skin Enterprises, Inc., Class A		12,353			371,331

Issuer	Shares			Value(a)
Pharmaceuticals (2.2%)
Endo Pharmaceuticals Holdings, Inc.		27,119	(b)		593,906
Forest Laboratories, Inc.		40,980	(b)		1,117,115
Impax Laboratories, Inc.		10,477	(b)		189,634
Medicis Pharmaceutical Corp., Class A		9,418			239,029
Par Pharmaceutical Companies, Inc.		13,881	(b)		376,730
Perrigo Co.		10,833	(d)		661,138
Questcor Pharmaceuticals, Inc.		26,215	(b,d)		255,334
Viropharma, Inc.		15,989	(b,d)		203,380
Total					3,636,266
Professional Services (0.5%)
Administaff, Inc.		12,253	(d)		271,282
Heidrick & Struggles International, Inc.		5,020			132,578
On Assignment, Inc.		16,193	(b,d)		113,837
SFN Group, Inc.		23,273	(b,d)		198,984
TrueBlue, Inc.		8,205	(b)		129,557
Total					846,238
Real Estate Investment Trusts (REITs) (3.1%)
American Capital Agency Corp.		14,808	(d)		407,368
Annaly Capital Management, Inc.		67,971			1,152,108
Anworth Mortgage Asset Corp.		31,416	(d)		210,801
Apartment Investment & Management Co., Class A		5,848	(d)		131,054
Capstead Mortgage Corp.		41,049	(d)		464,675
Entertainment Properties Trust		14,158	(d)		618,988
Extra Space Storage, Inc.		9,960	(d)		149,599
Hospitality Properties Trust		12,368			327,628
Medical Properties Trust, Inc.		26,053			261,833
MFA Financial, Inc.		42,426			301,649
NorthStar Realty Finance Corp.		41,215			194,535
SL Green Realty Corp.		7,034			437,304
Sovran Self Storage, Inc.		3,107	(d)		114,617
The Macerich Co.		3,672	(d)		164,175
UDR, Inc.		5,722			116,214
Total					5,052,548
Real Estate Management & Development (0.4%)
CB Richard Ellis Group, Inc., Class A		16,611	(b)		287,703
Jones Lang LaSalle, Inc.		5,326	(d)		420,114
Total					707,817
Road & Rail (0.5%)
Arkansas Best Corp.		5,597	(d)		170,485
Hertz Global Holdings, Inc.		18,921	(b,d)		273,598
Kansas City Southern		7,365	(b)		298,650
Total					742,733
Semiconductors & Semiconductor Equipment (2.5%)
Amkor Technology, Inc.		35,189	(b,d)		265,325
Atheros Communications, Inc.		22,901	(b,d)		889,476
Cavium Networks, Inc.		12,631	(b,d)		348,742
Cree, Inc.		9,065	(b,d)		663,649
Monolithic Power Systems, Inc.		12,491	(b,d)		307,903
Netlogic Microsystems, Inc.		8,738	(b,d)		272,363
Omnivision Technologies, Inc.		21,473	(b,d)		377,066
Power Integrations, Inc.		5,911	(d)		227,455
Sigma Designs, Inc.		13,255	(b,d)		157,204
Skyworks Solutions, Inc.		24,891	(b)		419,164
Volterra Semiconductor Corp.		8,669	(b,d)		207,709
Total					4,136,056

Issuer	Shares			Value(a)
Software (1.6%)
ArcSight, Inc.		7,072	(b,d)		160,747
Blackbaud, Inc.		9,819	(d)		226,328
Concur Technologies, Inc.		6,870	(b)		287,922
JDA Software Group, Inc.		8,188	(b)		236,633
MicroStrategy, Inc., Class A		2,867	(b)		219,612
Sourcefire, Inc.		8,381	(b)		187,483
SuccessFactors, Inc.		14,841	(b,d)		310,622
Take-Two Interactive Software, Inc.		13,157	(b,d)		143,017
Taleo Corp., Class A		8,657	(b)		224,909
TIBCO Software, Inc.		35,261	(b)		401,975
Ultimate Software Group, Inc.		7,100	(b,d)		237,495
Total					2,636,743
Specialty Retail (6.7%)
Abercrombie & Fitch Co., Class A		6,301			275,543
American Eagle Outfitters, Inc.		16,203			272,372
AnnTaylor Stores Corp.		13,601	(b,d)		295,142
Asbury Automotive Group, Inc.		10,450	(b)		162,498
AutoNation, Inc.		14,491	(b)		292,718
Barnes & Noble, Inc.		10,336	(d)		227,805
Big 5 Sporting Goods Corp.		8,107	(d)		137,414
Brown Shoe Co., Inc.		9,548	(d)		179,502
Cabela’s, Inc.		11,896	(b,d)		216,031
Chico’s FAS, Inc.		16,788			249,973
Collective Brands, Inc.		10,930	(b,d)		256,309
DSW, Inc., Class A		4,970	(b)		150,094
Foot Locker, Inc.		8,223			126,223
GameStop Corp., Class A		17,658	(b,d)		429,266
Genesco, Inc.		11,899	(b,d)		396,118
Group 1 Automotive, Inc.		4,326	(b,d)		134,322
GUESS?, Inc.		4,486	(d)		205,773
Gymboree Corp.		3,680	(b,d)		180,798
HOT Topic, Inc.		29,515	(d)		225,495
Jo-Ann Stores, Inc.		16,158	(b)		712,891
JOS A Bank Clothiers, Inc.		2,918	(b,d)		177,589
Office Depot, Inc.		23,377	(b)		160,366
OfficeMax, Inc.		22,563	(b,d)		428,697
Pacific Sunwear Of California		15,540	(b)		78,632
PetSmart, Inc.		10,279			339,927
RadioShack Corp.		25,829			556,615
Rent-A-Center, Inc.		23,999	(b)		619,654
Signet Jewelers Ltd.		11,339	(b,c)		363,075
Stage Stores, Inc.		11,163			170,236
The Cato Corp., Class A		10,990	(d)		261,013
The Childrens Place Retail Stores, Inc.		8,374	(b,d)		383,697
The Dress Barn, Inc.		28,108	(b)		778,029
The Finish Line, Inc., Class A		14,889			239,862
The Men’s Wearhouse, Inc.		19,398	(d)		458,375
The Wet Seal, Inc., Class A		56,235	(b,d)		265,992
Williams-Sonoma, Inc.		14,891	(d)		428,861
Total					10,836,907
Textiles, Apparel & Luxury Goods (1.7%)
CROCS, Inc.		6,205	(b,d)		59,940
Deckers Outdoor Corp.		4,998	(b)		702,619
Fossil, Inc.		9,786	(b,d)		380,675
Jones Apparel Group, Inc.		15,451			336,214

Issuer	Shares			Value(a)
Liz Claiborne, Inc.		18,262	(b,d)		159,610
Quiksilver, Inc.		29,498	(b)		157,224
Skechers USA, Inc., Class A		7,880	(b)		302,198
Steven Madden Ltd.		2,715	(b)		157,361
The Warnaco Group, Inc.		8,083	(b)		386,691
True Religion Apparel, Inc.		5,302	(b,d)		165,688
Total					2,808,220
Thrifts & Mortgage Finance (0.1%)
Astoria Financial Corp.		9,897	(d)		159,738
Tobacco (0.4%)
Alliance One International, Inc.		46,334	(b,d)		235,840
Universal Corp.		8,686	(d)		449,761
Total					685,601
Trading Companies & Distributors (0.5%)
H&E Equipment Services, Inc.		20,609	(b,d)		243,392
United Rentals, Inc.		14,496	(b,d)		208,163
WESCO International, Inc.		10,524	(b,d)		427,485
Total					879,040
Wireless Telecommunication Services (0.5%)
NII Holdings, Inc.		12,565	(b)		533,008
Telephone & Data Systems, Inc.		5,481	(d)		189,971
USA Mobility, Inc.		10,152	(b,d)		141,519
Total					864,498
Total Common Stocks (Cost: $125,726,057)				$	160,141,683

Money Market Fund (2.2%)

	Shares			Value(a)
RiverSource Short-Term Cash Fund, 0.21%		3,571,392	(f)	$	3,571,392
Total Money Market Fund (Cost: $3,571,392)				$	3,571,392

Investments of Cash Collateral Received for Securities on Loan (24.6%)

				Amount
	Effective			payable at
Issuer	yield			maturity		Value(a)
Repurchase Agreements(h)
Cantor Fitzgerald
dated 04-30-10, matures 05-03-10, repurchase price
$5,000,092		0.22	%	$	5,000,000	$	5,000,000
Goldman Sachs
dated 04-30-10, matures 05-03-10, repurchase price
$8,130,589		0.19			8,130,461		8,130,461
$12,000,250		0.25			12,000,000		12,000,000
Mizuho Securities USA
dated 04-30-10, matures 05-03-10, repurchase price
$5,000,092		0.22			5,000,000		5,000,000

			Amount
	Effective		payable at
Issuer	yield		maturity		Value(a)
Pershing LLC
dated 04-30-10, matures 05-03-10, repurchase price
$10,000,258		0.31		10,000,000		10,000,000
Total Investments of Cash Collateral Received for Securities on Loan
(Cost: $40,130,461)					$	40,130,461
Total Investments in Securities
(Cost: $169,427,910)(i)					$	203,843,536

Investment in Derivatives

Futures Contracts Outstanding at April 30, 2010

	Number of					Unrealized
	contracts		Notional		Expiration	appreciation
Contract description	long (short)		market value		date	(depreciation)
E-Mini S&P MidCap 400 Index		18	$	1,478,880	June 2010	$	(16,604	)
Russell 2000 Mini Index		22		1,574,100	June 2010		(37,762	)
Total						$	(54,366	)

The industries identified above are based on the Global Industry Classification Standard (GICS), which was developed by and is the exclusive property of Morgan Stanley Capital International Inc. and Standard & Poor’s, a division of The McGraw-Hill Companies, Inc.

Notes to Portfolio of Investments

(a)	Securities are valued by using policies described in Note 2 to the financial statements in the most recent Semiannual Report dated Jan. 31, 2010.
(b)	Non-income producing.
(c)	Foreign security values are stated in U.S. dollars. At April 30, 2010, the value of foreign securities, excluding short-term securities, represented 5.64% of net assets.
(d)	At April 30, 2010, security was partially or fully on loan.
(e)	At April 30, 2010, investments in securities included securities valued at $1,830,140 that were partially pledged as collateral to cover initial margin deposits on open stock index futures contracts.
(f)	Affiliated Money Market Fund — The Fund may invest its daily cash balance in RiverSource Short-Term Cash Fund, a money market fund established for the exclusive use of the RiverSource funds and other institutional clients of RiverSource Investments. The rate shown is the seven-day current annualized yield at April 30, 2010.
(g)	Shareholders of tracking stocks have a financial interest only in a unit or division of the company. Unlike the common stock of the company itself, a tracking stock usually has limited or no voting rights. In the event of a company’s liquidation, tracking stock shareholders typically do not have a legal claim on the company’s assets.

(h) The table below represents securities received as collateral subject to repurchase agreements. This collateral, which is generally high quality short-term obligations, is deposited with the Fund’s custodian and, pursuant to the terms of the repurchase agreement, must have an aggregate market value greater than or equal to the repurchase price plus accrued interest at all times. The market value of securities held as collateral for repurchase agreements is monitored on a daily basis to ensure the existence of the proper level of collateral.

Cantor Fitzgerald (0.22%)

Security description	Value (a)
Fannie Mae Discount Notes	$	6,362
Fannie Mae Interest Strip		27,412
Fannie Mae Pool		3,386,704
Fannie Mae Principal Strip		639
Fannie Mae REMICS		100,189
Federal Farm Credit Bank		87,812
Federal Home Loan Banks		81,413
Federal Home Loan Mortgage Corp		113,973
Federal National Mortgage Association		82,036
Freddie Mac Non Gold Pool		379,138
Freddie Mac Reference REMIC		5,396
Freddie Mac REMICS		117,694
Freddie Mac Strips		68,463
Ginnie Mae I Pool		168,045
Ginnie Mae II Pool		124,749
Government National Mortgage Association		28,257
United States Treasury Inflation Indexed Bonds		23,011
United States Treasury Note/Bond		40,106
United States Treasury Strip Coupon		256,013
United States Treasury Strip Principal		2,588
Total market value of collateral securities	$	5,100,000

Goldman Sachs (0.19%)

Security description	Value (a)
Fannie Mae Pool	$	5,962,684
Freddie Mac Gold Pool		2,009,399
Freddie Mac Non Gold Pool		320,987
Total market value of collateral securities	$	8,293,070

Goldman Sachs (0.25%)

Security description	Value (a)
Allied Irish Banks PLC/New York NY	$	1,831,579
Banco Bilbao Vizcaya Argentaria/NY		66,292
Bank of Nova Scotia		4,049
BNP Paribas NY		1,396,952
Calyon NY		93,563

Security description	Value (a)
Credit Agricole Corporate and Investment Bank/New York		918,442
Dexia Credit Local NY		1,019,742
DnB NOR Bank		8,253
Natixis/New York NY		3,284,637
Nordea Bank Finland PLC		274,405
Rabobank Nederland NV/NY		454,737
Royal Bank of Scotland PLC/Greenwich CT		87,248
Sanpaolo IMI SpA/New York		27,780
Societe Generale NY		404,211
Standard Chartered Banking		552,359
Sumitomo Mitsui Banking Corp/New York		1,200,000
Svenska Handelsbanken/New York NY		39,347
Toronto Dominion Bank/NY		896,842
UBS AG Stamford		39,562
Total market value of collateral securities	$	12,600,000

Mizuho Securities USA (0.22%)

Security description	Value (a)
United States Cash Management Bill	$	95,613
United States Treasury Bill		666,810
United States Treasury Note/Bond		3,179,446
United States Treasury Strip Coupon		378,089
United States Treasury Strip Principal		780,042
Total market value of collateral securities	$	5,100,000

Pershing LLC (0.31%)

Security description	Value (a)
Fannie Mae Pool	$	2,949,060
Fannie Mae REMICS		935,477
Fannie Mae-Aces		32,976
Federal Farm Credit Bank		184,920
Federal Home Loan Banks		358,007
Federal Home Loan Mortgage Corp		54,705
Federal National Mortgage Association		163,192
Freddie Mac Gold Pool		2,491,384
Freddie Mac Non Gold Pool		135,952
Freddie Mac REMICS		47,663
Ginnie Mae I Pool		162,146
Ginnie Mae II Pool		214,330
Government National Mortgage Association		5,908
United States Treasury Bill		741
United States Treasury Note/Bond		1,675,426
United States Treasury Strip Coupon		276,787
United States Treasury Strip Principal		511,326
Total market value of collateral securities	$	10,200,000

(i) At April 30, 2010, the cost of securities for federal income tax purposes was approximately $169,428,000 and the approximate aggregate gross unrealized appreciation and depreciation based on that cost was:

Unrealized appreciation	$	36,551,000
Unrealized depreciation		(2,135,000	)
Net unrealized appreciation	$	34,416,000

Fair Value Measurements

Generally accepted accounting principles (GAAP) require disclosure regarding the inputs and valuation techniques used to measure fair value and any changes in valuation inputs or techniques. In addition, investments shall be disclosed by major category.

The Fund categorizes its fair value measurements according to a three-level hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs by prioritizing that the most observable input be used when available. Observable inputs are those that market participants would use in pricing an investment based on market data obtained from sources independent of the reporting entity. Unobservable inputs are those that reflect the Fund’s assumptions about the information market participants would use in pricing an investment. An investment’s level within the fair value hierarchy is based on the lowest level of any input that is deemed significant to the asset or liability’s fair value measurement. The input levels are not necessarily an indication of the risk or liquidity associated with investments at that level. For example, certain U.S. government securities are generally high quality and liquid, however, they are reflected as Level 2 because the inputs used to determine fair value may not always be quoted prices in an active market.

Fair value inputs are summarized in the three broad levels listed below:

• Level 1 — Valuations based on quoted prices for investments in active markets that the Fund has the ability to access at the measurement date. Valuation adjustments are not applied to Level 1 investments.

• Level 2 — Valuations based on other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risks, etc.).

• Level 3 — Valuations based on significant unobservable inputs (including the Fund’s own assumptions and judgment in determining the fair value of investments).

Inputs that are used in determining fair value of an investment may include price information, credit data, volatility statistics, and other factors. These inputs can be either observable or unobservable. The availability of observable inputs can vary between investments, and is affected by various factors such as the type of investment, and the volume and level of activity for that investment or similar investments in the marketplace. The inputs will be considered by the Fund Administrator, along with any other relevant factors in the calculation of an investment’s fair value. The Fund uses prices and inputs that are current as of the measurement date, which may include periods of market dislocations. During these periods, the availability of prices and inputs may be reduced for many investments. This condition could cause an investment to be reclassified between the various levels within the hierarchy.

Non-U.S. equity securities actively traded in foreign markets may be reflected in Level 2 despite the availability of closing prices, because the Fund evaluates and determines whether those closing prices reflect fair value at the close of the New York Stock Exchange (NYSE) or require adjustment, as described in Note 2 to the financial statements — Valuation of securities in the most recent Semiannual Report dated Jan. 31, 2010.

Investments falling into the Level 3 category are primarily supported by quoted prices from brokers and dealers participating in the market for those investments. However, these may be classified as Level 3 investments due to lack of market transparency and corroboration to support these quoted prices. Additionally, valuation models may be used as the pricing source for any remaining investments classified as Level 3. These models rely on one or more significant unobservable inputs and/or significant assumptions by the Fund Administrator. Inputs used in a valuation model may include, but are not limited to, financial statement analysis, discount rates and estimated cash flows, and comparable company data.

The following table is a summary of the inputs used to value the Fund’s investments as of April 30, 2010:

	Fair value at April 30, 2010
	Level 1			Level 2
	quoted prices			other		Level 3
	in active			significant		significant
	markets for			observable		unobservable
Description(a)	identical assets			inputs		inputs		Total
Equity Securities
Common Stocks	$	160,141,683		$	—	$	—	$	160,141,683
Total Equity Securities		160,141,683			—		—		160,141,683
Other
Affiliated Money Market Fund (b)		3,571,392			—		—		3,571,392
Investments of Cash Collateral Received for Securities on Loan		—			40,130,461		—		40,130,461
Total Other		3,571,392			40,130,461		—		43,701,853
Investments in Securities		163,713,075			40,130,461		—		203,843,536
Other Financial Instruments (c)		(54,366	)		—		—		(54,366	)
Total	$	163,658,709		$	40,130,461	$	—	$	203,789,170

(a)	See the Portfolio of Investments for all investment classifications not indicated in the table.
(b)	Money market fund that is a sweep investment for cash balances in the Fund at April 30, 2010.
(c)	Other Financial Instruments are derivative instruments, which are valued at the unrealized appreciation (depreciation) on the instrument. Derivative descriptions are located in the Investments in Derivatives section of the Portfolio of Investments.

Portfolio of Investments
RiverSource Disciplined Small Cap Value Fund
April 30, 2010 (Unaudited)

(Percentages represent value of investments compared to net assets)

Investments in Securities

Common Stocks (96.1%)

Issuer	Shares			Value(a)
Aerospace & Defense (1.4%)
Ceradyne, Inc.		8,211	(b)	$	182,284
DynCorp International, Inc., Class A		4,923	(b)		84,676
Esterline Technologies Corp.		2,773	(b,d)		154,678
Ladish Co., Inc.		4,650	(b,d)		127,829
Triumph Group, Inc.		3,923	(d)		304,267
Total					853,734
Air Freight & Logistics (0.8%)
Atlas Air Worldwide Holdings, Inc.		7,958	(b)		439,839
Pacer International, Inc.		9,986	(b,d)		66,307
Total					506,146
Airlines (1.4%)
Alaska Air Group, Inc.		9,470	(b,d)		392,153
Skywest, Inc.		31,983			479,105
Total					871,258
Auto Components (1.2%)
ArvinMeritor, Inc.		10,530	(b,d)		161,320
Dana Holding Corp.		17,998	(b)		240,452
Exide Technologies		14,347	(b,d)		85,221
Spartan Motors, Inc.		12,974	(d)		80,050
Tenneco, Inc.		5,562	(b,d)		143,333
Total					710,376
Building Products (1.0%)
Apogee Enterprises, Inc.		15,650	(d)		215,031
Griffon Corp.		4,872	(b)		68,695
Insteel Industries, Inc.		4,823	(d)		59,130
NCI Building Systems, Inc.		5,521	(b)		76,079
Quanex Building Products Corp.		4,351			82,669
Trex Co., Inc.		4,540	(b,d)		111,185
Total					612,789
Capital Markets (5.4%)
Apollo Investment Corp.		60,942			741,054
Ares Capital Corp.		54,037	(d)		857,026
BGC Partners, Inc., Class A		39,213			255,669
Cohen & Steers, Inc.		5,245			141,982
Hercules Technology Growth Capital, Inc.		9,943			107,782
Knight Capital Group, Inc., Class A		17,467	(b)		271,612
MVC Capital, Inc.		7,424	(d)		104,901
Oppenheimer Holdings, Inc., Class A		7,155			207,996
PennantPark Investment Corp.		19,874	(d)		217,422
SWS Group, Inc.		20,581			227,832
Westwood Holdings Group, Inc.		2,887	(d)		111,150
Total					3,244,426

Issuer	Shares			Value(a)
Chemicals (4.8%)
Ferro Corp.		8,406	(b,d)		91,794
HB Fuller Co.		2,704	(d)		63,409
Innophos Holdings, Inc.		13,745			391,595
Innospec, Inc.		9,414	(b,c)		125,300
Minerals Technologies, Inc.		1,136			65,547
Olin Corp.		30,866	(d)		648,186
OM Group, Inc.		5,212	(b,d)		196,753
PolyOne Corp.		12,341	(b)		139,577
Solutia, Inc.		11,336	(b,d)		199,514
Stepan Co.		1,512			114,534
WR Grace & Co.		30,045	(b)		867,999
Total					2,904,208
Commercial Banks (5.9%)
Arrow Financial Corp.		3,240	(d)		90,072
Bancfirst Corp.		3,023			133,435
Bank of Kentucky Financial Corp.		1,074	(d)		20,599
Camden National Corp.		3,298	(d)		117,838
First Financial Bancorp		9,548			182,462
German American Bancorp, Inc.		3,296	(d)		52,439
Great Southern Bancorp, Inc.		6,750	(d)		164,633
Heritage Financial Corp.		2,188	(b,d)		33,498
International Bancshares Corp.		11,192	(d)		270,511
MainSource Financial Group, Inc.		12,728	(d)		102,970
Nara Bancorp, Inc.		5,754	(b,d)		51,786
National Bankshares, Inc.		2,590			70,163
NBT Bancorp, Inc.		5,565	(d)		136,176
Northrim BanCorp, Inc.		5,577	(d)		96,259
Republic Bancorp, Inc., Class A		10,319	(d)		249,204
SVB Financial Group		16,540	(b,d)		814,263
The First of Long Island Corp.		2,118	(d)		54,517
Trico Bancshares		6,425	(d)		122,332
Trustmark Corp.		8,569	(d)		209,769
UMB Financial Corp.		4,313			181,664
Wilshire Bancorp, Inc.		16,066	(d)		174,477
Wintrust Financial Corp.		6,793	(d)		253,379
Total					3,582,446
Commercial Services & Supplies (1.0%)
Consolidated Graphics, Inc.		2,314	(b)		96,980
Kimball International, Inc., Class B		18,984			152,632
Steelcase, Inc., Class A		9,402	(d)		77,190
United Stationers, Inc.		2,177	(b)		133,276
Viad Corp.		6,228	(d)		145,735
Total					605,813
Communications Equipment (0.8%)
KVH Industries, Inc.		3,142	(b)		47,350
Netgear, Inc.		3,284	(b)		88,865
Oplink Communications, Inc.		4,601	(b)		69,521
Plantronics, Inc.		8,349			277,187
Total					482,923
Computers & Peripherals (0.2%)
Intevac, Inc.		3,632	(b,d)		50,557
Super Micro Computer, Inc.		5,143	(b,d)		72,928
Total					123,485

Issuer	Shares			Value(a)
Construction & Engineering (3.5%)
Comfort Systems USA, Inc.		22,454	(d)		316,152
EMCOR Group, Inc.		25,589	(b)		730,823
Granite Construction, Inc.		9,543	(d)		320,740
Layne Christensen Co.		7,676	(b)		210,169
Sterling Construction Co., Inc.		6,836	(b,d)		119,630
Tutor Perini Corp.		17,305	(b,d)		419,992
Total					2,117,506
Consumer Finance (0.8%)
Cash America International, Inc.		7,870	(d)		291,661
Credit Acceptance Corp.		2,956	(b)		133,316
World Acceptance Corp.		1,809	(b,d)		63,822
Total					488,799
Distributors (0.2%)
Core-Mark Holding Co., Inc.		3,936	(b,d)		120,127
Diversified Consumer Services (0.3%)
Regis Corp.		10,757	(d)		205,674
Diversified Financial Services (0.3%)
PHH Corp.		8,389	(b)		190,346
Diversified Telecommunication Services (0.1%)
Consolidated Communications Holdings, Inc.		3,946	(d)		73,198
Electrical Equipment (1.9%)
AO Smith Corp.		1,265			65,312
EnerSys		6,684	(b)		172,982
GrafTech International Ltd.		41,522	(b)		700,061
Woodward Governor Co.		7,069	(d)		226,561
Total					1,164,916
Electronic Equipment, Instruments & Components (3.0%)
Anixter International, Inc.		5,850	(b,d)		306,540
Benchmark Electronics, Inc.		1,675	(b)		36,247
Coherent, Inc.		4,875	(b,d)		183,154
CTS Corp.		13,042			136,941
Insight Enterprises, Inc.		6,548	(b)		98,416
Littelfuse, Inc.		6,026	(b)		254,478
Methode Electronics, Inc.		7,792	(d)		86,491
Plexus Corp.		6,232	(b)		230,896
Rogers Corp.		3,391	(b,d)		113,497
SYNNEX Corp.		10,381	(b,d)		284,647
TTM Technologies, Inc.		7,143	(b,d)		77,573
Total					1,808,880
Energy Equipment & Services (4.3%)
Boots & Coots, Inc.		48,334	(b)		141,619
Bristow Group, Inc.		4,106	(b)		158,943
Cal Dive International, Inc.		18,393	(b)		120,658
CARBO Ceramics, Inc.		5,350	(d)		391,888
Dawson Geophysical Co.		4,175	(b,d)		122,286
Global Industries Ltd.		11,746	(b,d)		78,698

Issuer	Shares			Value(a)
Gulf Island Fabrication, Inc.		2,624	(d)		62,897
Gulfmark Offshore, Inc., Class A		5,186	(b)		178,761
Key Energy Services, Inc.		29,526	(b)		320,800
Lufkin Industries, Inc.		5,592			476,047
Matrix Service Co.		11,012	(b)		117,058
Natural Gas Services Group, Inc.		3,005	(b)		53,880
Parker Drilling Co.		28,033	(b,d)		155,022
Superior Well Services, Inc.		4,171	(b,d)		60,480
T-3 Energy Services, Inc.		2,935	(b,d)		87,316
Tetra Technologies, Inc.		6,314	(b)		77,599
Total					2,603,952
Food & Staples Retailing (2.4%)
Nash Finch Co.		3,471	(d)		121,554
Ruddick Corp.		11,031	(d)		389,836
Spartan Stores, Inc.		13,064			197,136
The Andersons, Inc.		1,514			54,716
The Pantry, Inc.		9,251	(b)		146,351
Weis Markets, Inc.		3,249	(d)		121,123
Winn-Dixie Stores, Inc.		31,165	(b,d)		392,990
Total					1,423,706
Food Products (2.1%)
American Italian Pasta Co., Class A		2,870	(b,d)		112,590
Chiquita Brands International, Inc.		28,050	(b,d)		421,872
Diamond Foods, Inc.		1,257	(d)		53,686
Fresh Del Monte Produce, Inc.		21,532	(b,c)		449,374
Seneca Foods Corp., Class A		4,608	(b)		151,327
TreeHouse Foods, Inc.		2,005	(b)		84,791
Total					1,273,640
Gas Utilities (0.3%)
Nicor, Inc.		2,607			113,430
The Laclede Group, Inc.		2,397			81,690
Total					195,120
Health Care Equipment & Supplies (1.0%)
ev3, Inc.		16,506	(b,d)		315,761
Invacare Corp.		3,273	(d)		86,505
Natus Medical, Inc.		7,987	(b,d)		136,098
Volcano Corp.		2,897	(b)		69,586
Total					607,950
Health Care Providers & Services (6.6%)
Centene Corp.		13,850	(b,d)		317,165
Gentiva Health Services, Inc.		3,981	(b,d)		114,175
Healthspring, Inc.		35,782	(b)		629,763
inVentiv Health, Inc.		3,528	(b)		81,250
Kindred Healthcare, Inc.		23,596	(b,d)		420,953
Magellan Health Services, Inc.		20,687	(b)		873,198
Molina Healthcare, Inc.		9,764	(b,d)		284,816
National Healthcare Corp.		2,309	(d)		81,646
Res-Care, Inc.		11,633	(b)		135,408
Sun Healthcare Group, Inc.		21,305	(b)		190,467
Triple-S Management Corp., Class B		11,294	(b,c,d)		205,551
Universal American Corp.		18,676	(b,d)		286,677
WellCare Health Plans, Inc.		11,991	(b)		343,302
Total					3,964,371

Issuer	Shares			Value(a)
Hotels, Restaurants & Leisure (0.3%)
Biglari Holdings, Inc.		141	(b)		55,166
Red Robin Gourmet Burgers, Inc.		3,848	(b)		93,930
Total					149,096
Household Durables (0.4%)
American Greetings Corp., Class A		6,521			160,155
CSS Industries, Inc.		4,029			80,661
Total					240,816
Industrial Conglomerates (0.6%)
Seaboard Corp.		195			284,702
Standex International Corp.		3,661			87,388
Total					372,090
Insurance (9.9%)
American Equity Investment Life Holding Co.		8,918	(d)		93,817
American Physicians Capital, Inc.		3,042	(d)		101,725
AMERISAFE, Inc.		9,961	(b,d)		170,333
Amtrust Financial Services, Inc.		8,774	(d)		119,590
Argo Group International Holdings Ltd.		10,543	(c)		347,814
CNA Surety Corp.		6,751	(b,d)		113,214
Conseco, Inc.		127,392	(b)		751,613
Employers Holdings, Inc.		25,808	(d)		425,316
FPIC Insurance Group, Inc.		4,734	(b,d)		128,859
Greenlight Capital Re Ltd., Series A		6,590	(b,c,d)		168,836
Horace Mann Educators Corp.		21,998			378,586
Maiden Holdings Ltd.		13,592	(c)		101,804
Meadowbrook Insurance Group, Inc.		18,841	(d)		148,844
Montpelier Re Holdings Ltd.		16,466	(c)		273,336
National Financial Partners Corp.		18,883	(b)		290,609
Platinum Underwriters Holdings Ltd.		28,399	(c)		1,056,726
ProAssurance Corp.		16,173	(b)		985,743
Safety Insurance Group, Inc.		5,353			199,613
SeaBright Insurance Holdings, Inc.		9,679			105,308
Total					5,961,686
Internet Software & Services (0.9%)
Earthlink, Inc.		59,969	(d)		540,920
IT Services (1.2%)
Acxiom Corp.		3,912	(b)		74,641
Ciber, Inc.		31,272	(b,d)		124,150
CSG Systems International, Inc.		4,004	(b)		90,971
Global Cash Access Holdings, Inc.		5,885	(b)		51,082
Ness Technologies, Inc.		21,665	(b,c)		140,173
Unisys Corp.		8,203	(b)		229,847
Total					710,864
Leisure Equipment & Products (0.9%)
Eastman Kodak Co.		46,167	(b,d)		282,541
Jakks Pacific, Inc.		13,247	(b,d)		202,547
Sport Supply Group, Inc.		4,416			59,219
Total					544,307
Life Sciences Tools & Services (0.1%)
Kendle International, Inc.		3,883	(b)		64,264

Issuer	Shares			Value(a)
Machinery (2.2%)
Altra Holdings, Inc.		7,397	(b)		112,139
American Railcar Industries, Inc.		5,010	(d)		81,914
FreightCar America, Inc.		5,336	(d)		152,716
LB Foster Co., Class A		3,937	(b)		116,535
Mueller Industries, Inc.		3,687			109,320
Nordson Corp.		9,603			689,686
Robbins & Myers, Inc.		3,168	(d)		82,083
Total					1,344,393
Marine (0.5%)
American Commercial Lines, Inc.		2,048	(b,d)		41,779
Genco Shipping & Trading Ltd.		5,615	(b)		130,043
International Shipholding Corp.		3,567			108,223
Total					280,045
Media (0.1%)
EW Scripps Co., Class A		6,240	(b,d)		68,266
Metals & Mining (1.6%)
AM Castle & Co.		3,729	(b)		51,162
AMCOL International Corp.		2,625			75,443
Brush Engineered Materials, Inc.		2,775	(b,d)		82,501
Century Aluminum Co.		11,896	(b)		160,358
Coeur d’Alene Mines Corp.		8,973	(b,d)		160,795
Haynes International, Inc.		2,705			97,137
Horsehead Holding Corp.		5,378	(b)		63,891
Kaiser Aluminum Corp.		1,697	(d)		68,202
Olympic Steel, Inc.		4,373	(d)		138,974
RTI International Metals, Inc.		3,396	(b,d)		91,862
Total					990,325
Multiline Retail (0.6%)
Dillard’s, Inc., Class A		7,268	(d)		204,085
Retail Ventures, Inc.		8,086	(b)		87,491
Tuesday Morning Corp.		8,803	(b,d)		49,737
Total					341,313
Oil, Gas & Consumable Fuels (5.2%)
Atlas Energy, Inc.		18,730	(b,d)		675,777
ATP Oil & Gas Corp.		7,818	(b)		142,757
Bill Barrett Corp.		2,082	(b)		70,955
Brigham Exploration Co.		3,698	(b,d)		72,148
Clayton Williams Energy, Inc.		1,762	(b)		81,863
Cloud Peak Energy, Inc.		4,094	(b)		65,504
CVR Energy, Inc.		13,087	(b,d)		111,109
DHT Holdings, Inc.		15,054	(c)		71,055
Golar LNG Ltd.		7,445	(b,c)		96,711
Gran Tierra Energy, Inc.		45,174	(b,c,d)		273,754
Knightsbridge Tankers Ltd.		6,225	(c)		117,902
Nordic American Tanker Shipping		1,502	(c,d)		46,922
Patriot Coal Corp.		11,004	(b)		216,669
Penn Virginia Corp.		10,758	(d)		274,437
Petroleum Development Corp.		9,896	(b,d)		231,665
Rosetta Resources, Inc.		19,026	(b,d)		473,746
Swift Energy Co.		1,083	(b)		39,183
Western Refining, Inc.		19,357	(b,d)		103,754
Total					3,165,911

Issuer	Shares			Value(a)
Paper & Forest Products (1.6%)
Clearwater Paper Corp.		5,437	(b)		346,228
PH Glatfelter Co.		5,946	(d)		87,347
KapStone Paper and Packaging Corp.		13,844	(b)		178,588
Schweitzer-Mauduit International, Inc.		6,134			349,147
Total					961,310
Personal Products (0.1%)
American Oriental Bioengineering, Inc.		19,758	(b,d)		80,020
Pharmaceuticals (1.2%)
Medicis Pharmaceutical Corp., Class A		9,958			252,734
Par Pharmaceutical Companies, Inc.		10,435	(b)		283,206
Viropharma, Inc.		16,880	(b,d)		214,714
Total					750,654
Professional Services (0.4%)
Diamond Management & Technology Consultants, Inc.		8,805			71,497
Heidrick & Struggles International, Inc.		1,524			40,249
Manpower, Inc.		0			15
On Assignment, Inc.		18,203	(b)		127,967
Total					239,728
Real Estate Investment Trusts (REITs) (6.0%)
American Capital Agency Corp.		11,354	(d)		312,349
Anworth Mortgage Asset Corp.		39,526	(d)		265,219
Capstead Mortgage Corp.		53,970			610,940
Cypress Sharpridge Investments, Inc.		16,299	(d)		210,909
Entertainment Properties Trust		14,077	(d)		615,447
Extra Space Storage, Inc.		4,997	(d)		75,055
First Potomac Realty Trust		4,285			69,503
Hatteras Financial Corp.		11,402	(d)		304,091
Medical Properties Trust, Inc.		27,118			272,536
MFA Financial, Inc.		42,891			304,955
Mid-America Apartment Communities, Inc.		2,936	(d)		162,273
NorthStar Realty Finance Corp.		32,784	(d)		154,740
Omega Healthcare Investors, Inc.		8,798	(d)		176,136
Sovran Self Storage, Inc.		1,588	(d)		58,581
Total					3,592,734
Road & Rail (0.4%)
Arkansas Best Corp.		5,995	(d)		182,607
Celadon Group, Inc.		4,246	(b)		63,393
Total					246,000
Semiconductors & Semiconductor Equipment (0.4%)
Brooks Automation, Inc.		6,984	(b)		67,884
Omnivision Technologies, Inc.		4,249	(b,d)		74,612
Silicon Image, Inc.		23,800	(b)		88,537
Total					231,033
Software (1.0%)
JDA Software Group, Inc.		7,559	(b)		218,456
Netscout Systems, Inc.		4,170	(b)		60,548
Take-Two Interactive Software, Inc.		9,495	(b,d)		103,211
TIBCO Software, Inc.		18,276	(b)		208,346
Total					590,561

Issuer	Shares			Value(a)
Specialty Retail (6.8%)
America’s Car-Mart, Inc.		3,439	(b)		87,110
AnnTaylor Stores Corp.		3,369	(b,d)		73,107
Asbury Automotive Group, Inc.		2,889	(b)		44,924
Brown Shoe Co., Inc.		3,419			64,277
Build-A-Bear Workshop, Inc.		9,576	(b,d)		91,547
Cabela’s, Inc.		4,702	(b,d)		85,388
Christopher & Banks Corp.		5,175			50,663
Collective Brands, Inc.		7,258	(b,d)		170,200
Conn’s, Inc.		5,887	(b)		56,103
DSW, Inc., Class A		6,874	(b)		207,595
Genesco, Inc.		8,959	(b)		298,245
Group 1 Automotive, Inc.		3,467	(b,d)		107,650
Gymboree Corp.		1,777	(b)		87,304
HOT Topic, Inc.		15,180	(d)		115,975
Jo-Ann Stores, Inc.		16,412	(b)		724,097
OfficeMax, Inc.		3,136	(b)		59,584
Pacific Sunwear Of California		15,703	(b,d)		79,457
Rent-A-Center, Inc.		28,273	(b)		730,009
Shoe Carnival, Inc.		3,257	(b)		90,089
Sonic Automotive, Inc., Class A		4,589	(b)		49,011
Stage Stores, Inc.		9,037			137,814
The Dress Barn, Inc.		12,357	(b)		342,042
The Finish Line, Inc., Class A		8,334			134,261
The Men’s Wearhouse, Inc.		8,049	(d)		190,198
Total					4,076,650
Textiles, Apparel & Luxury Goods (0.9%)
Jones Apparel Group, Inc.		7,671			166,921
Quiksilver, Inc.		30,017	(b)		159,991
Skechers USA, Inc., Class A		3,104	(b)		119,038
Unifirst Corp.		1,672			81,711
Total					527,661
Thrifts & Mortgage Finance (0.4%)
ESB Financial Corp.		4,204			60,117
Ocwen Financial Corp.		13,769	(b,d)		159,032
Total					219,149
Tobacco (1.0%)
Alliance One International, Inc.		10,958	(b,d)		55,776
Universal Corp.		10,884	(d)		563,574
Total					619,350
Trading Companies & Distributors (0.7%)
H&E Equipment Services, Inc.		9,814	(b,d)		115,903
Textainer Group Holdings Ltd.		3,696	(c)		84,860
United Rentals, Inc.		8,825	(b,d)		126,728
Watsco, Inc.		1,488			88,119
Total					415,610
Total Common Stocks (Cost: $49,002,359)				$	58,060,545

Money Market Fund (3.7%)

	Shares			Value(a)
RiverSource Short-Term Cash Fund, 0.21%		2,267,588	(f)	$	2,267,588
Total Money Market Fund (Cost: $2,267,588)				$	2,267,588

Investments of Cash Collateral Received for Securities on Loan (24.5%)

				Amount
	Effective			payable at
Issuer	yield			maturity		Value(a)
Repurchase Agreements(e)
Cantor Fitzgerald
dated 04-30-10, matures 05-03-10, repurchase price
$5,000,092		0.22	%	$	5,000,000	$	5,000,000
Goldman Sachs
dated 04-30-10, matures 05-03-10, repurchase price
$4,816,481		0.19			4,816,405		4,816,405
$5,000,104		0.25			5,000,000		5,000,000
Total Investments of Cash Collateral Received for Securities on Loan
(Cost: $14,816,405)						$	14,816,405
Total Investments in Securities
(Cost: $66,086,352)(g)						$	75,144,538

Investments in Derivatives

At April 30, 2010, $132,000 was held in a margin deposit account as collateral to cover initial margin requirements on open stock index futures contracts.

Futures Contracts Outstanding at April 30, 2010

	Number of					Unrealized
	contracts		Notional		Expiration	appreciation
Contract description	long (short)		market value		date	(depreciation)
Russell 2000 Mini Index		30	$	2,146,500	June 2010	$	(73,553	)

The industries identified above are based on the Global Industry Classification Standard (GICS), which was developed by and is the exclusive property of Morgan Stanley Capital International Inc. and Standard & Poor’s, a division of The McGraw-Hill Companies, Inc.

Notes to Portfolio of Investments

(a)	Securities are valued by using policies described in Note 2 to the financial statements in the most recent Semiannual Report dated Jan. 31, 2010.
(b)	Non-income producing.
(c)	Foreign security values are stated in U.S. dollars. At April 30, 2010, the value of foreign securities, excluding short-term securities, represented 5.89% of net assets.
(d)	At April 30, 2010, security was partially or fully on loan.

(e) The table below represents securities received as collateral subject to repurchase agreements. This collateral, which is generally high quality short-term obligations, is deposited with the Fund’s custodian and, pursuant to the terms of the repurchase agreement, must have an aggregate market value greater than or equal to the repurchase price plus accrued interest at all times. The market value of securities held as collateral for repurchase agreements is monitored on a daily basis to ensure the existence of the proper level of collateral.

Cantor Fitzgerald (0.22%)

Security description	Value (a)
Fannie Mae Discount Notes	$	6,362
Fannie Mae Interest Strip		27,412
Fannie Mae Pool		3,386,704
Fannie Mae Principal Strip		639
Fannie Mae REMICS		100,189
Federal Farm Credit Bank		87,812
Federal Home Loan Banks		81,413
Federal Home Loan Mortgage Corp		113,973
Federal National Mortgage Association		82,036
Freddie Mac Non Gold Pool		379,138
Freddie Mac Reference REMIC		5,396
Freddie Mac REMICS		117,694
Freddie Mac Strips		68,463
Ginnie Mae I Pool		168,045
Ginnie Mae II Pool		124,749
Government National Mortgage Association		28,257
United States Treasury Inflation Indexed Bonds		23,011
United States Treasury Note/Bond		40,106
United States Treasury Strip Coupon		256,013
United States Treasury Strip Principal		2,588
Total market value of collateral securities	$	5,100,000

Goldman Sachs (0.19%)

Security description	Value (a)
Fannie Mae Pool	$	3,532,235
Freddie Mac Gold Pool		1,190,348
Freddie Mac Non Gold Pool		190,150
Total market value of collateral securities	$	4,912,733

Goldman Sachs (0.25%)

Security description	Value (a)
Allied Irish Banks PLC/New York NY	$	763,158
Banco Bilbao Vizcaya Argentaria/NY		27,622
Bank of Nova Scotia		1,687
BNP Paribas NY		582,063
Calyon NY		38,985

Security description	Value (a)
Credit Agricole Corporate and Investment Bank/New York		382,684
Dexia Credit Local NY		424,893
DnB NOR Bank		3,439
Natixis/New York NY		1,368,599
Nordea Bank Finland PLC		114,336
Rabobank Nederland NV/NY		189,474
Royal Bank of Scotland PLC/Greenwich CT		36,353
Sanpaolo IMI SpA/New York		11,575
Societe Generale NY		168,421
Standard Chartered Banking		230,150
Sumitomo Mitsui Banking Corp/New York		499,999
Svenska Handelsbanken/New York NY		16,395
Toronto Dominion Bank/NY		373,684
UBS AG Stamford		16,483
Total market value of collateral securities	$	5,250,000

(f)	Affiliated Money Market Fund — The Fund may invest its daily cash balance in RiverSource Short-Term Cash Fund, a money market fund established for the exclusive use of the RiverSource funds and other institutional clients of RiverSource Investments. The rate shown is the seven-day current annualized yield at April 30, 2010.
(g)	At April 30, 2010, the cost of securities for federal income tax purposes was approximately $66,086,000 and the approximate aggregate gross unrealized appreciation and depreciation based on that cost was:

Unrealized appreciation	$	10,009,000
Unrealized depreciation		(950,000	)
Net unrealized appreciation	$	9,059,000

Fair Value Measurements

Generally accepted accounting principles (GAAP) require disclosure regarding the inputs and valuation techniques used to measure fair value and any changes in valuation inputs or techniques. In addition, investments shall be disclosed by major category.

The Fund categorizes its fair value measurements according to a three-level hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs by prioritizing that the most observable input be used when available. Observable inputs are those that market participants would use in pricing an investment based on market data obtained from sources independent of the reporting entity. Unobservable inputs are those that reflect the Fund’s assumptions about the information market participants would use in pricing an investment. An investment’s level within the fair value hierarchy is based on the lowest level of any input that is deemed significant to the asset or liability’s fair value measurement. The input levels are not necessarily an indication of the risk or liquidity associated with investments at that level. For example, certain U.S. government securities are generally high quality and liquid, however, they are reflected as Level 2 because the inputs used to determine fair value may not always be quoted prices in an active market.

Fair value inputs are summarized in the three broad levels listed below:

• Level 1 — Valuations based on quoted prices for investments in active markets that the Fund has the ability to access at the measurement date. Valuation adjustments are not applied to Level 1 investments.

• Level 2 — Valuations based on other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risks, etc.).

• Level 3 — Valuations based on significant unobservable inputs (including the Fund’s own assumptions and judgment in determining the fair value of investments).

Inputs that are used in determining fair value of an investment may include price information, credit data, volatility statistics, and other factors. These inputs can be either observable or unobservable. The availability of observable inputs can vary between investments, and is affected by various factors such as the type of investment, and the volume and level of activity for that investment or similar investments in the marketplace. The inputs will be considered by the Fund Administrator, along with any other relevant factors in the calculation of an investment’s fair value. The Fund uses prices and inputs that are current as of the measurement date, which may include periods of market dislocations. During these periods, the availability of prices and inputs may be reduced for many investments. This condition could cause an investment to be reclassified between the various levels within the hierarchy.

Non-U.S. equity securities actively traded in foreign markets may be reflected in Level 2 despite the availability of closing prices, because the Fund evaluates and determines whether those closing prices reflect fair value at the close of the New York Stock Exchange (NYSE) or require adjustment, as described in Note 2 to the financial statements — Valuation of securities in the most recent Semiannual Report dated Jan. 31, 2010.

Investments falling into the Level 3 category are primarily supported by quoted prices from brokers and dealers participating in the market for those investments. However, these may be classified as Level 3 investments due to lack of market transparency and corroboration to support these quoted prices. Additionally, valuation models may be used as the pricing source for any remaining investments classified as Level 3. These models rely on one or more significant unobservable inputs and/or significant assumptions by the Fund Administrator. Inputs used in a valuation model may include, but are not limited to, financial statement analysis, discount rates and estimated cash flows, and comparable company data.

The following table is a summary of the inputs used to value the Fund’s investments as of April 30, 2010:

	Fair value at April 30, 2010
	Level 1			Level 2
	quoted prices			other		Level 3
	in active			significant		significant
	markets for			observable		unobservable
Description(a)	identical assets			inputs		inputs		Total
Equity Securities
Common Stocks	$	58,060,545		$	—	$	—	$	58,060,545
Total Equity Securities		58,060,545			—		—		58,060,545
Other
Affiliated Money Market Fund (b)		2,267,588			—		—		2,267,588
Investments of Cash Collateral Received for Securities on Loan		—			14,816,405		—		14,816,405
Total Other		2,267,588			14,816,405		—		17,083,993
Investments in Securities		60,328,133			14,816,405		—		75,144,538
Other Financial Instruments (c)		(73,553	)		—		—		(73,553	)
Total	$	60,254,580		$	14,816,405	$	—	$	75,070,985

(a)	See the Portfolio of Investments for all investment classifications not indicated in the table.
(b)	Money market fund that is a sweep investment for cash balances in the Fund at April 30, 2010.
(c)	Other Financial Instruments are derivative instruments, which are valued at the unrealized appreciation (depreciation) on the instrument. Derivative descriptions are located in the Investments in Derivatives section of the Portfolio of Investments.

Item 2. Control and Procedures.

(a) Based upon their evaluation of the registrant’s disclosure controls and procedures as conducted within 90 days of the filing date of this report, the registrant’s principal financial officer and principal executive officer have concluded that those disclosure controls and procedures provide reasonable assurance that the material information required to be disclosed by the registrant on this report is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms.

(b) There were no changes in the registrant’s internal control over financial reporting that occurred during the registrant’s last fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

Item 3. Exhibits.

Separate certification for the Registrant’s principal executive officer and principal financial officer as required by Rule 30a-2(a) under the Investment Company Act of 1940.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

(Registrant)                               RiverSource Dimensions Series, Inc.

By	/s/ J. Kevin Connaughton
	J. Kevin Connaughton
	President and Principal Executive Officer

Date June 28, 2010

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated.

By	/s/ J. Kevin Connaughton
	J. Kevin Connaughton
	President and Principal Executive Officer

Date June 28, 2010

By	/s/ Jeffrey P. Fox
	Jeffrey P. Fox
	Treasurer and Principal Financial Officer

Date June 28, 2010

EX-99.CERT

Exhibit

Certification Pursuant to
270.30a-2 of the Investment Company Act of 1940

I, J. Kevin Connaughton, certify that:

1.	I have reviewed this report on Form N-Q of RiverSource Dimensions Series, Inc.;
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.	Based on my knowledge, the schedule of investments included in this report, fairly present in all material respects the investments of the registrant as of the end of the fiscal quarter for which the report is filed;
4.	The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principals;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures as of a date within 90 days prior to the filing date of this report based on such evaluation and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize, and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: June 24, 2010

/s/ J. Kevin Connaughton
Name:	J. Kevin Connaughton
Title:	President and Principal Executive Officer

Certification Pursuant to
270.30a-2 of the Investment Company Act of 1940

I, Jeffrey P. Fox, certify that:

1.	I have reviewed this report on Form N-Q of RiverSource Dimensions Series, Inc.;
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.	Based on my knowledge, the schedule of investments included in this report, fairly present in all material respects the investments of the registrant as of the end of the fiscal quarter for which the report is filed;
4.	The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principals;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures as of a date within 90 days prior to the filing date of this report based on such evaluation and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize, and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: June 24, 2010

/s/ Jeffrey P. Fox
Name:	Jeffrey P. Fox
Title:	Treasurer and Principal Financial Officer