AB Discovery Growth Fund, Inc.

Portfolio of Investments

April 30, 2020 (unaudited)

Company	Shares		U.S. $ Value
COMMON STOCKS – 96.7%
Information Technology – 30.5%
Communications Equipment – 1.3%
Ciena Corp.(a)		628,802	$	29,082,093
Electronic Equipment, Instruments & Components – 3.1%
IPG Photonics Corp.(a) (b)		137,343		17,762,570
Littelfuse, Inc.		170,063		24,699,950
Novanta, Inc.(a) (b)		337,881		29,358,480
				71,821,000
IT Services – 1.7%
Jack Henry & Associates, Inc.(b)		235,266		38,477,754
Semiconductors & Semiconductor Equipment – 6.3%
Cree, Inc.(a) (b)		249,506		10,761,194
Entegris, Inc.(b)		613,751		33,283,717
Inphi Corp.(a) (b)		232,255		22,421,897
Lattice Semiconductor Corp.(a) (b)		1,484,975		33,426,787
MKS Instruments, Inc.(b)		197,130		19,758,340
Universal Display Corp.		176,573		26,507,139
				146,159,074
Software – 18.1%
Anaplan, Inc.(a) (b)		697,761		28,510,515
ANSYS, Inc.(a) (b)		74,182		19,423,073
Aspen Technology, Inc.(a) (b)		267,180		27,319,155
Avalara, Inc.(a)		336,879		30,106,876
Coupa Software, Inc.(a)		207,042		36,458,026
Crowdstrike Holdings, Inc. - Class A(a)		290,500		19,655,230
Datadog, Inc. - Class A(a)		527,380		23,795,386
Fair Isaac Corp.(a)		102,695		36,245,173
HubSpot, Inc.(a) (b)		183,811		30,996,049
Manhattan Associates, Inc.(a) (b)		365,903		25,957,159
RingCentral, Inc. - Class A(a) (b)		175,993		40,219,680
Slack Technologies, Inc. - Class A(a) (b)		559,736		14,939,354
Smartsheet, Inc. - Class A(a) (b)		620,221		32,698,051
Splunk, Inc.(a) (b)		177,859		24,964,289
Trade Desk, Inc. (The) - Class A(a) (b)		88,695		25,950,383
				417,238,399
				702,778,320
Health Care – 23.0%
Biotechnology – 9.1%
Allogene Therapeutics, Inc.(a) (b)		377,912		10,921,657
Arena Pharmaceuticals, Inc.(a) (b)		243,913		11,944,420
Ascendis Pharma A/S (Sponsored ADR)(a)		106,257		14,422,263
BeiGene Ltd. (Sponsored ADR)(a) (b)		64,085		9,794,110
Biohaven Pharmaceutical Holding Co., Ltd.(a)		299,391		14,101,316
Blueprint Medicines Corp.(a)		174,545		10,268,482
Coherus Biosciences, Inc.(a) (b)		782,038		12,981,831

Company	Shares		U.S. $ Value
Deciphera Pharmaceuticals, Inc.(a)		224,531	$	13,018,307
Gossamer Bio, Inc.(a) (b)		386,164		5,027,855
Madrigal Pharmaceuticals, Inc.(a) (b)		96,060		8,038,301
Neurocrine Biosciences, Inc.(a)		285,526		28,021,522
NextCure, Inc.(a)		264,330		8,569,579
PTC Therapeutics, Inc.(a) (b)		303,366		15,447,397
Sarepta Therapeutics, Inc.(a) (b)		190,856		22,498,105
Ultragenyx Pharmaceutical, Inc.(a) (b)		270,713		16,359,186
Vir Biotechnology, Inc.(a)		250,270		7,635,738
				209,050,069
Health Care Equipment & Supplies – 4.8%
Insulet Corp.(a)		207,636		41,469,062
iRhythm Technologies, Inc.(a) (b)		341,860		36,114,091
Penumbra, Inc.(a) (b)		182,791		32,412,500
				109,995,653
Health Care Providers & Services – 3.6%
Amedisys, Inc.(a)		151,453		27,891,584
Guardant Health, Inc.(a)		443,279		34,114,752
HealthEquity, Inc.(a) (b)		390,804		21,990,541
				83,996,877
Health Care Technology – 1.6%
Teladoc Health, Inc.(a) (b)		231,796		38,151,304
Life Sciences Tools & Services – 3.5%
10X Genomics, Inc.(a) (b)		416,129		33,236,223
ICON PLC(a)		161,696		25,947,357
Repligen Corp.(a) (b)		177,857		20,658,091
				79,841,671
Pharmaceuticals – 0.4%
Revance Therapeutics, Inc.(a) (b)		523,381		9,687,782
				530,723,356
Industrials – 17.2%
Aerospace & Defense – 1.3%
Axon Enterprise, Inc.(a) (b)		427,901		31,112,682
Building Products – 2.4%
Armstrong World Industries, Inc.		338,827		26,116,785
Trex Co., Inc.(a) (b)		300,350		28,599,327
				54,716,112
Commercial Services & Supplies – 1.0%
Copart, Inc.(a)		276,412		22,143,365
Construction & Engineering – 1.1%
Jacobs Engineering Group, Inc.		299,054		24,746,719
Electrical Equipment – 1.2%
AMETEK, Inc.		320,206		26,855,677

Company	Shares		U.S. $ Value
Industrial Conglomerates – 1.1%
Carlisle Cos., Inc.		208,709	$	25,245,441
Machinery – 4.3%
IDEX Corp.(b)		204,070		31,351,274
Ingersoll Rand, Inc.(a) (b)		1,009,305		29,350,589
Nordson Corp.		247,293		39,791,917
				100,493,780
Professional Services – 1.0%
CoStar Group, Inc.(a)		36,570		23,706,868
Road & Rail – 2.2%
Kansas City Southern		168,699		22,023,654
Knight-Swift Transportation Holdings, Inc.(b)		750,599		27,907,271
				49,930,925
Trading Companies & Distributors – 1.6%
SiteOne Landscape Supply, Inc.(a) (b)		296,394		26,269,400
United Rentals, Inc.(a) (b)		92,910		11,938,935
				38,208,335
				397,159,904
Consumer Discretionary – 15.1%
Diversified Consumer Services – 4.3%
Bright Horizons Family Solutions, Inc.(a)		279,665		32,566,989
Chegg, Inc.(a) (b)		737,469		31,526,800
Strategic Education, Inc.		214,405		34,154,717
				98,248,506
Hotels, Restaurants & Leisure – 2.6%
Chipotle Mexican Grill, Inc. - Class A(a)		25,408		22,322,198
Planet Fitness, Inc.(a) (b)		622,733		37,569,482
				59,891,680
Household Durables – 1.9%
NVR, Inc.(a)		7,419		22,998,900
Tempur Sealy International, Inc.(a)		394,298		21,193,518
				44,192,418
Specialty Retail – 6.3%
Burlington Stores, Inc.(a) (b)		200,514		36,631,903
Dynatrace, Inc.(a) (b)		960,025		28,656,746
Five Below, Inc.(a) (b)		325,313		29,330,220
Floor & Decor Holdings, Inc. - Class A(a) (b)		412,173		17,476,135
National Vision Holdings, Inc.(a) (b)		1,259,074		33,365,461
				145,460,465
				347,793,069

Company	Shares		U.S. $ Value
Financials – 5.5%
Banks – 0.5%
SVB Financial Group(a) (b)		56,410	$	10,896,720
Capital Markets – 3.3%
Ares Management Corp. - Class A		727,114		24,394,675
PJT Partners, Inc.		368,113		17,905,016
Stifel Financial Corp.		239,384		10,599,923
Tradeweb Markets, Inc. - Class A		442,848		23,098,952
				75,998,566
Insurance – 1.7%
eHealth, Inc.(a)		184,607		19,697,567
Goosehead Insurance, Inc. - Class A(a) (b)		347,876		19,529,758
				39,227,325
				126,122,611
Consumer Staples – 3.8%
Food & Staples Retailing – 2.4%
Casey’s General Stores, Inc.(b)		165,903		25,119,373
Grocery Outlet Holding Corp.(a) (b)		861,896		28,675,280
				53,794,653
Food Products – 1.4%
Freshpet, Inc.(a)		429,380		32,379,546
				86,174,199
Materials – 1.2%
Chemicals – 1.2%
FMC Corp.		308,962		28,393,608
Utilities – 0.4%
Multi-Utilities – 0.4%
CMS Energy Corp.		172,900		9,870,861
Total Common Stocks (cost $1,789,413,751)				2,229,015,928
INVESTMENT COMPANIES – 1.4%
Funds and Investment Trusts – 1.4%
iShares Russell 2000 Growth ETF(b) (c) (cost $33,377,189)		186,826		34,065,853
PREFERRED STOCKS – 0.1%
Consumer Discretionary – 0.1%
Household Durables – 0.1%
Honest Co., Inc. (The) - Series D 0.00% (a) (d) (e) (f)		42,660		1,224,506
Honest Co., Inc. (The) - Series E 0.00% (a) (d) (e) (f)		11,161		204,814
Total Preferred Stocks (cost $2,170,717)				1,429,320

Company	Shares		U.S. $ Value
SHORT-TERM INVESTMENTS – 2.4%
Investment Companies – 2.4%
AB Fixed Income Shares, Inc. - Government Money Market Portfolio - Class AB, 0.35%(c) (g) (h) (cost $54,855,209)		54,855,209	$	54,855,209
Total Investments Before Security Lending Collateral for Securities Loaned – 100.6% (cost $1,879,816,866)				2,319,366,310
INVESTMENTS OF CASH COLLATERAL FOR SECURITIES LOANED – 1.7%
Investment Companies – 1.7%
AB Fixed Income Shares, Inc. - Government Money Market Portfolio - Class AB, 0.35%(c) (g) (h) (cost $39,395,837)		39,395,837		39,395,837
Total Investments – 102.3% (cost $1,919,212,703)(i)				2,358,762,147
Other assets less liabilities – (2.3)%				(53,798,640	)
Net Assets – 100.0%			$	2,304,963,507

(a) Non-income producing security.

(b) Represents entire or partial securities out on loan.

(c) To obtain a copy of the fund’s shareholder report, please go to the Securities and Exchange Commission’s website at www.sec.gov. Additionally, shareholder reports for AB funds can be obtained by calling AB at (800) 227-4618.

(d) Security in which significant unobservable inputs (Level 3) were used in determining fair value.

(e) Illiquid security.

(f) Fair valued by the Adviser.

(g) The rate shown represents the 7-day yield as of period end.

(h) Affiliated investments.

(i) As of April 30, 2020, the cost basis of investment securities owned was substantially identical for both book and tax purposes. Gross unrealized appreciation of investments was $499,756,158 and gross unrealized depreciation of investments was $(60,206,714), resulting in net unrealized appreciation of $439,549,444.

Glossary:

ADR – American Depositary Receipt

ETF – Exchange Traded Fund

AB Discovery Growth Fund, Inc.

April 30, 2020 (unaudited)

In accordance with U.S. GAAP regarding fair value measurements, fair value is defined as the price that the Fund would receive to sell an asset or pay to transfer a liability in an orderly transaction between market participants at the measurement date. U.S. GAAP establishes a framework for measuring fair value, and a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of an asset or liability (including those valued based on their market values). Inputs may be observable or unobservable and refer broadly to the assumptions that market participants would use in pricing the asset or liability. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Fund. Unobservable inputs reflect the Fund’s own assumptions about the assumptions that market participants would use in pricing the asset or liability based on the best information available in the circumstances. Each investment is assigned a level based upon the observability of the inputs which are significant to the overall valuation. The three-tier hierarchy of inputs is summarized below.

• Level 1 - quoted prices in active markets for identical investments

• Level 2 - other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)

• Level 3 - significant unobservable inputs (including the Fund’s own assumptions in determining the fair value of investments)

Where readily available market prices or relevant bid prices are not available for certain equity investments, such investments may be valued based on similar publicly traded investments, movements in relevant indices since last available prices or based upon underlying company fundamentals and comparable company data (such as multiples to earnings or other multiples to equity). Where an investment is valued using an observable input, by pricing vendors, such as another publicly traded security, the investment will be classified as Level 2. If management determines that an adjustment is appropriate based on restrictions on resale, illiquidity or uncertainty, and such adjustment is a significant component of the valuation, the investment will be classified as Level 3. An investment will also be classified as Level 3 where management uses company fundamentals and other significant inputs to determine the valuation.

The following table summarizes the valuation of the Fund’s investments by the above fair value hierarchy levels as of April 30, 2020:

Investments in Securities:	Level 1		Level 2		Level 3		Total
Assets:
Common Stocks(a)	$	2,229,015,928	$	—	$	—	$	2,229,015,928
Investment Companies		34,065,853		—		—		34,065,853
Preferred Stocks		—		—		1,429,320		1,429,320
Short-Term Investments		54,855,209		—		—		54,855,209
Investments of Cash Collateral for Securities Loaned in Affiliated Money Market Fund		39,395,837		—		—		39,395,837
Total Investments in Securities		2,357,332,827		—		1,429,320		2,358,762,147
Other Financial Instruments(b)		—		—		—		—
Total	$	2,357,332,827	$	—	$	1,429,320	$	2,358,762,147

^(a)  See Portfolio of Investments for sector classifications.

^(b)  Other financial instruments are derivative instruments, such as futures, forwards and swaps, which are valued at the unrealized appreciation/(depreciation) on the instrument. Other financial instruments may also include swaps with upfront premiums, options written and swaptions written which are valued at market value.

A summary of the Fund’s transactions in AB mutual funds for the nine months ended April 30, 2020 is as follows:

Fund	Market Value 07/31/2019 (000)		Purchases at Cost (000)		Sales Proceeds (000)		Market Value 04/30/2020 (000)		Dividend Income (000)
Government Money Market Portfolio	$	77,153	$	513,440	$	535,738	$	54,855	$	744
Government Money Market Portfolio*		75,311		150,289		186,204		39,396		127
Total	$	152,464	$	663,729	$	721,942	$	94,251	$	871

* Investments of cash collateral for securities lending transactions.