0001752724-21-025638.txt : 20210217
0001752724-21-025638.hdr.sgml : 20210217
20210217160242
ACCESSION NUMBER: 0001752724-21-025638
CONFORMED SUBMISSION TYPE: NPORT-P
PUBLIC DOCUMENT COUNT: 1
CONFORMED PERIOD OF REPORT: 20201231
FILED AS OF DATE: 20210217
PERIOD START: 20201231
FILER:
COMPANY DATA:
COMPANY CONFORMED NAME: WILLIAM BLAIR FUNDS
CENTRAL INDEX KEY: 0000822632
IRS NUMBER: 000000000
FISCAL YEAR END: 1231
FILING VALUES:
FORM TYPE: NPORT-P
SEC ACT: 1940 Act
SEC FILE NUMBER: 811-05344
FILM NUMBER: 21644675
BUSINESS ADDRESS:
STREET 1: 150 NORTH RIVERSIDE PLAZA
CITY: CHICAGO
STATE: IL
ZIP: 60606
BUSINESS PHONE: 3123648000
MAIL ADDRESS:
STREET 1: 150 NORTH RIVERSIDE PLAZA
CITY: CHICAGO
STATE: IL
ZIP: 60606
FORMER COMPANY:
FORMER CONFORMED NAME: WILLIAM BLAIR MUTUAL FUNDS INC
DATE OF NAME CHANGE: 19960112
FORMER COMPANY:
FORMER CONFORMED NAME: BLAIR WILLIAM READY RESERVES INC
DATE OF NAME CHANGE: 19920316
0000822632
S000066499
William Blair Small-Mid Cap Core Fund
C000214491
Class I
WBCIX
C000214492
Class R6
WBCRX
NPORT-P
1
primary_doc.xml
NPORT-P
false
0000822632
XXXXXXXX
S000066499
C000214491
C000214492
WILLIAM BLAIR FUNDS
811-05344
0000822632
SNQR0U5FDV8EZZX4W051
150 NORTH RIVERSIDE PLAZA
CHICAGO
60606
312-364-8000
William Blair Small-Mid Cap Core Fund
S000066499
549300ECH5GG47ZL5S10
2020-12-31
2020-12-31
N
30195438.06
109738.30
30085699.76
0.00000000
0.00000000
0.00000000
0.00000000
0.00000000
0.00000000
0.00000000
0.00000000
0.00000000
0.00000000
0.00000000
0.00000000
0.00000000
0.00000000
N
FirstCash Inc
549300V2X3UU7K0DG350
FirstCash Inc
33767D105
4449.00000000
NS
USD
311607.96000000
1.035734460177
Long
EC
CORP
US
N
1
N
N
N
FMC Corp
CKDHZ2X64EEBQCSP7013
FMC Corp
302491303
1702.00000000
NS
USD
195610.86000000
0.650178860922
Long
EC
CORP
US
N
1
N
N
N
Ligand Pharmaceuticals Inc
5493008K7TB0IKP37H79
Ligand Pharmaceuticals Inc
53220K504
1762.00000000
NS
USD
175230.90000000
0.582439170096
Long
EC
CORP
US
N
1
N
N
N
Pure Storage Inc
549300NPDB0BZTK3WO90
Pure Storage Inc
74624M102
15788.00000000
NS
USD
356966.68000000
1.186499509227
Long
EC
CORP
US
N
1
N
N
N
Vertex Inc
549300QMYW171MP1PL50
Vertex Inc
92538J106
4840.00000000
NS
USD
168674.00000000
0.560645094997
Long
EC
CORP
US
N
1
N
N
N
Inter Parfums Inc
N/A
Inter Parfums Inc
458334109
4517.00000000
NS
USD
273233.33000000
0.908183396695
Long
EC
CORP
US
N
1
N
N
N
Skyline Champion Corp
N/A
Skyline Champion Corp
830830105
10303.00000000
NS
USD
318774.82000000
1.059555943664
Long
EC
CORP
US
N
1
N
N
N
Teledyne Technologies Inc
549300VSMO9KYQWDND94
Teledyne Technologies Inc
879360105
418.00000000
NS
USD
163847.64000000
0.544603054963
Long
EC
CORP
US
N
1
N
N
N
Jones Lang LaSalle Inc
6SYKCME112RT8TQUO411
Jones Lang LaSalle Inc
48020Q107
1541.00000000
NS
USD
228638.17000000
0.759956297589
Long
EC
CORP
US
N
1
N
N
N
Trex Co Inc
N/A
Trex Co Inc
89531P105
3898.00000000
NS
USD
326340.56000000
1.084703239756
Long
EC
CORP
US
N
1
N
N
N
Virtu Financial Inc
5493001OPW2K42CH3884
Virtu Financial Inc
928254101
14133.00000000
NS
USD
355727.61000000
1.182381040952
Long
EC
CORP
US
N
1
N
N
N
CMC Materials Inc
31F6V1MN00ZW3XWB4J69
CMC Materials Inc
12571T100
1483.00000000
NS
USD
224377.90000000
0.745795849157
Long
EC
CORP
US
N
1
N
N
N
Luxfer Holdings PLC
21380045UF5SJYZOXE41
Luxfer Holdings PLC
000000000
10707.00000000
NS
USD
175808.94000000
0.584360481565
Long
EC
CORP
GB
N
1
N
N
N
Fixed Income Clearing Corp
549300H47WTHXPU08X20
FIXED INC CLEARING CORP.REPO
000000000
747314.16000000
PA
USD
747314.16000000
2.483951398709
Long
RA
CORP
US
N
2
Repurchase
N
0.00000000
2021-01-04
766100.00000000
USD
762299.37790000
USD
UST
N
N
N
Columbia Banking System Inc
N/A
Columbia Banking System Inc
197236102
8227.00000000
NS
USD
295349.30000000
0.981693303981
Long
EC
CORP
US
N
1
N
N
N
Owens Corning
JO5M6676RDJIZ2U8X907
Owens Corning
690742101
5127.00000000
NS
USD
388421.52000000
1.291050309942
Long
EC
CORP
US
N
1
N
N
N
Americold Realty Trust
549300R7N1V5YV8MWH02
Americold Realty Trust
03064D108
8207.00000000
NS
USD
306367.31000000
1.018315387190
Long
EC
US
N
1
N
N
N
Burlington Stores Inc
5299003Z37DVGKKC1W09
Burlington Stores Inc
122017106
1286.00000000
NS
USD
336353.30000000
1.117983968075
Long
EC
CORP
US
N
1
N
N
N
Merit Medical Systems Inc
549300OYTY138SP2CE83
Merit Medical Systems Inc
589889104
10249.00000000
NS
USD
568921.99000000
1.891004678429
Long
EC
CORP
US
N
1
N
N
N
National Vision Holdings Inc
549300JHURCBLI5ROA42
National Vision Holdings Inc
63845R107
6742.00000000
NS
USD
305345.18000000
1.014917992387
Long
EC
CORP
US
N
1
N
N
N
Horizon Therapeutics Plc
529900P0GSQ79OOZEV53
Horizon Therapeutics Plc
000000000
5855.00000000
NS
USD
428293.25000000
1.423577491687
Long
EC
CORP
IE
N
1
N
N
N
WillScot Mobile Mini Holdings Corp
549300HJ4VIXF476Q166
WillScot Mobile Mini Holdings Corp
971378104
10074.00000000
NS
USD
233414.58000000
0.775832311902
Long
EC
CORP
US
N
1
N
N
N
Lincoln Electric Holdings Inc
BIMGBY40SIN95O01BN93
Lincoln Electric Holdings Inc
533900106
3153.00000000
NS
USD
366536.25000000
1.218307212143
Long
EC
CORP
US
N
1
N
N
N
Crown Holdings Inc
NYLWZIOY8PUNIT4JOE22
Crown Holdings Inc
228368106
4616.00000000
NS
USD
462523.20000000
1.537352309202
Long
EC
CORP
US
N
1
N
N
N
Wintrust Financial Corp
Q774KI4AW80FHFW33O61
Wintrust Financial Corp
97650W108
5730.00000000
NS
USD
350045.70000000
1.163495291093
Long
EC
CORP
US
N
1
N
N
N
Brink's Co/The
XFP140TFNOQMIVFTVQ13
Brink's Co/The
109696104
9381.00000000
NS
USD
675432.00000000
2.245026724949
Long
EC
CORP
US
N
1
N
N
N
MEDNAX Inc
N/A
MEDNAX Inc
58502B106
23308.00000000
NS
USD
571978.32000000
1.901163425025
Long
EC
CORP
US
N
1
N
N
N
Boot Barn Holdings Inc
529900QE1BFMYA3N4E71
Boot Barn Holdings Inc
099406100
10252.00000000
NS
USD
444526.72000000
1.477534920397
Long
EC
CORP
US
N
1
N
N
N
Knowles Corp
5493003EO323TDZQU148
Knowles Corp
49926D109
9438.00000000
NS
USD
173942.34000000
0.578156205066
Long
EC
CORP
US
N
1
N
N
N
Generac Holdings Inc
529900S2H2AHJHSFFI84
Generac Holdings Inc
368736104
1219.00000000
NS
USD
277212.79000000
0.921410478105
Long
EC
CORP
US
N
1
N
N
N
Dolby Laboratories Inc
549300X04FB2QPCJ5J24
Dolby Laboratories Inc
25659T107
3620.00000000
NS
USD
351610.60000000
1.168696765589
Long
EC
CORP
US
N
1
N
N
N
BJ's Wholesale Club Holdings Inc
549300UCIWH1C93V0J03
BJ's Wholesale Club Holdings Inc
05550J101
6973.00000000
NS
USD
259953.44000000
0.864043190199
Long
EC
CORP
US
N
1
N
N
N
ChampionX Corp
549300EP2909K6DYYP38
ChampionX Corp
15872M104
9864.00000000
NS
USD
150919.20000000
0.501631011423
Long
EC
CORP
US
N
1
N
N
N
Western Alliance Bancorp
5493003VJXZ5JXT9S762
Western Alliance Bancorp
957638109
9703.00000000
NS
USD
581694.85000000
1.933459599212
Long
EC
CORP
US
N
1
N
N
N
Penumbra Inc
549300RGE06P3ECANU72
Penumbra Inc
70975L107
1303.00000000
NS
USD
228025.00000000
0.757918219682
Long
EC
CORP
US
N
1
N
N
N
Service Corp International/US
549300RKVM2ME20JHZ15
Service Corp International/US
817565104
6537.00000000
NS
USD
320966.70000000
1.066841398273
Long
EC
CORP
US
N
1
N
N
N
Axon Enterprise Inc
549300QP2IEEGFE16681
Axon Enterprise Inc
05464C101
2271.00000000
NS
USD
278265.63000000
0.924909947981
Long
EC
CORP
US
N
1
N
N
N
Cree Inc
549300OGU88P3AW3TO93
Cree Inc
225447101
2857.00000000
NS
USD
302556.30000000
1.005648206335
Long
EC
CORP
US
N
1
N
N
N
Ares Management Corp
529900JUV61FH7B8VW38
Ares Management Corp
03990B101
7647.00000000
NS
USD
359791.35000000
1.195888255450
Long
EC
CORP
US
N
1
N
N
N
Nice Ltd
254900YTY4EF5Z4W0A51
Nice Ltd
653656108
1772.00000000
NS
USD
502432.88000000
1.670005630608
Long
EC
CORP
IL
N
1
N
N
N
Star Peak Energy Transition Corp
N/A
Star Peak Energy Transition Corp
855185104
13328.00000000
NS
USD
272690.88000000
0.906380380630
Long
EC
CORP
US
N
1
N
N
N
Eagle Materials Inc
529900KRXRGXL61SG039
Eagle Materials Inc
26969P108
3211.00000000
NS
USD
325434.85000000
1.081692806203
Long
EC
CORP
US
N
1
N
N
N
Sunstone Hotel Investors Inc
529900ZQ2V52V96ATF67
Sunstone Hotel Investors Inc
867892101
35054.00000000
NS
USD
397161.82000000
1.320101653503
Long
EC
US
N
1
N
N
N
Tabula Rasa HealthCare Inc
549300K6KY242XRMEF28
Tabula Rasa HealthCare Inc
873379101
5612.00000000
NS
USD
240418.08000000
0.799110813169
Long
EC
CORP
US
N
1
N
N
N
Douglas Emmett Inc
N/A
Douglas Emmett Inc
25960P109
8383.00000000
NS
USD
244615.94000000
0.813063820856
Long
EC
US
N
1
N
N
N
Martin Marietta Materials Inc
5299005MZ4WZECVATV08
Martin Marietta Materials Inc
573284106
1007.00000000
NS
USD
285957.79000000
0.950477443706
Long
EC
CORP
US
N
1
N
N
N
BWX Technologies Inc
549300NP85N265KWMS58
BWX Technologies Inc
05605H100
9617.00000000
NS
USD
579712.76000000
1.926871452631
Long
EC
CORP
US
N
1
N
N
N
Douglas Dynamics Inc
529900CDFLKNQ0QT6580
Douglas Dynamics Inc
25960R105
5386.00000000
NS
USD
230359.22000000
0.765676789430
Long
EC
CORP
US
N
1
N
N
N
Booz Allen Hamilton Holding Corp
529900JPV47PIUWMA015
Booz Allen Hamilton Holding Corp
099502106
2379.00000000
NS
USD
207401.22000000
0.689368110612
Long
EC
CORP
US
N
1
N
N
N
SolarEdge Technologies Inc
5493000K6Y58XXPDF853
SolarEdge Technologies Inc
83417M104
1162.00000000
NS
USD
370817.44000000
1.232537195272
Long
EC
CORP
US
N
1
N
N
N
Cameco Corp
N4BHALMXL3GMZKCUON55
Cameco Corp
13321L108
33988.00000000
NS
USD
455439.20000000
1.513806238954
Long
EC
CORP
CA
N
1
N
N
N
Entegris Inc
IYX6OWO7BT5DKO3BYG52
Entegris Inc
29362U104
2276.00000000
NS
USD
218723.60000000
0.727001870472
Long
EC
CORP
US
N
1
N
N
N
Grand Canyon Education Inc
529900XFER799IYOSW74
Grand Canyon Education Inc
38526M106
5594.00000000
NS
USD
520857.34000000
1.731245555712
Long
EC
CORP
US
N
1
N
N
N
Parsley Energy Inc
549300DMRA8DSL66G562
Parsley Energy Inc
701877102
21515.00000000
NS
USD
305513.00000000
1.015475798924
Long
EC
CORP
US
N
1
N
N
N
Veracyte Inc
529900ESWZRHXOW27Z37
Veracyte Inc
92337F107
4852.00000000
NS
USD
237456.88000000
0.789268263308
Long
EC
CORP
US
N
1
N
N
N
East West Bancorp Inc
N/A
East West Bancorp Inc
27579R104
9518.00000000
NS
USD
482657.78000000
1.604276396594
Long
EC
CORP
US
N
1
N
N
N
j2 Global Inc
5493008OJYGLHD7MXA18
j2 Global Inc
48123V102
2956.00000000
NS
USD
288771.64000000
0.959830225999
Long
EC
CORP
US
N
1
N
N
N
Primo Water Corp
5493005TMUI9D3MY9I37
Primo Water Corp
74167P108
15550.00000000
NS
USD
243824.00000000
0.810431540383
Long
EC
CORP
CA
N
1
N
N
N
Verra Mobility Corp
N/A
Verra Mobility Corp
92511U102
23071.00000000
NS
USD
309612.82000000
1.029102937508
Long
EC
CORP
US
N
1
N
N
N
Cable One Inc
549300648QS85T0XSH18
Cable One Inc
12685J105
137.00000000
NS
USD
305197.64000000
1.014427593290
Long
EC
CORP
US
N
1
N
N
N
IAA Inc
549300PZCOPC5178W747
IAA Inc
449253103
3755.00000000
NS
USD
243999.90000000
0.811016203533
Long
EC
CORP
US
N
1
N
N
N
Spectrum Brands Holdings Inc
549300JM0MJETDD30O20
Spectrum Brands Holdings Inc
84790A105
4593.00000000
NS
USD
362755.14000000
1.205739414053
Long
EC
CORP
US
N
1
N
N
N
Voya Financial Inc
549300T065Z4KJ686G75
Voya Financial Inc
929089100
4637.00000000
NS
USD
272701.97000000
0.906417241996
Long
EC
CORP
US
N
1
N
N
N
Zynga Inc
549300XNQ0U2EL088Z74
Zynga Inc
98986T108
26189.00000000
NS
USD
258485.43000000
0.859163762392
Long
EC
CORP
US
N
1
N
N
N
Avery Dennison Corp
549300PW7VPFCYKLIV37
Avery Dennison Corp
053611109
1943.00000000
NS
USD
301378.73000000
1.001734154113
Long
EC
CORP
US
N
1
N
N
N
Healthcare Realty Trust Inc
549300CB86LH2IOKHH22
Healthcare Realty Trust Inc
421946104
8910.00000000
NS
USD
263736.00000000
0.876615807855
Long
EC
US
N
1
N
N
N
Advance Auto Parts Inc
529900UCNQ5H9FSL0Y70
Advance Auto Parts Inc
00751Y106
2032.00000000
NS
USD
320060.32000000
1.063828737749
Long
EC
CORP
US
N
1
N
N
N
LPL Financial Holdings Inc
549300XROQ4Y8G2L7682
LPL Financial Holdings Inc
50212V100
2925.00000000
NS
USD
304843.50000000
1.013250489208
Long
EC
CORP
US
N
1
N
N
N
LHC Group Inc
5299009NPLWAMRQYZX73
LHC Group Inc
50187A107
1935.00000000
NS
USD
412774.20000000
1.371994679508
Long
EC
CORP
US
N
1
N
N
N
Euronet Worldwide Inc
YG3575C4DSHJPA5KET68
Euronet Worldwide Inc
298736109
2816.00000000
NS
USD
408094.72000000
1.356440844838
Long
EC
CORP
US
N
1
N
N
N
Owens & Minor Inc
549300LMT5KQQXCEZ733
Owens & Minor Inc
690732102
10271.00000000
NS
USD
277830.55000000
0.923463812430
Long
EC
CORP
US
N
1
N
N
N
Orion Engineered Carbons SA
N/A
Orion Engineered Carbons SA
000000000
20715.00000000
NS
USD
355055.10000000
1.180145726482
Long
EC
CORP
LU
N
1
N
N
N
Live Nation Entertainment Inc
5493007B9BM9ZXJINO78
Live Nation Entertainment Inc
538034109
3455.00000000
NS
USD
253873.40000000
0.843834120612
Long
EC
CORP
US
N
1
N
N
N
PROG Holdings Inc
549300DHYTLBOVRXIG52
PROG Holdings Inc
74319R101
4240.00000000
NS
USD
228408.80000000
0.759193908807
Long
EC
CORP
US
N
1
N
N
N
Casella Waste Systems Inc
8EU0XUFVJ48U37IIDH51
Casella Waste Systems Inc
147448104
3018.00000000
NS
USD
186965.10000000
0.621441753030
Long
EC
CORP
US
N
1
N
N
N
Brooks Automation Inc
35ZN6X1ANPH25YN32Y17
Brooks Automation Inc
114340102
4752.00000000
NS
USD
322423.20000000
1.071682568702
Long
EC
CORP
US
N
1
N
N
N
IDACORP Inc
N134NUJDWN8UEFA8B673
IDACORP Inc
451107106
4194.00000000
NS
USD
402749.82000000
1.338675261711
Long
EC
CORP
US
N
1
N
N
N
Hanger Inc
254900ZJJJYVLHJXSZ60
Hanger Inc
41043F208
16779.00000000
NS
USD
368970.21000000
1.226397301519
Long
EC
CORP
US
N
1
N
N
N
Hannon Armstrong Sustainable Infrastructure Capital Inc
N/A
Hannon Armstrong Sustainable Infrastructure Capital Inc
41068X100
4104.00000000
NS
USD
260316.72000000
0.865250674162
Long
EC
CORP
US
N
1
N
N
N
HealthEquity Inc
529900LRJU1RAFQHM467
HealthEquity Inc
42226A107
3849.00000000
NS
USD
268313.79000000
0.891831641412
Long
EC
CORP
US
N
1
N
N
N
New Fortress Energy Inc
N/A
New Fortress Energy Inc
644393100
4003.00000000
NS
USD
214520.77000000
0.713032343310
Long
EC
CORP
US
N
1
N
N
N
Builders FirstSource Inc
549300W0SKP6L3H7DP63
Builders FirstSource Inc
12008R107
13052.00000000
NS
USD
532652.12000000
1.770449496767
Long
EC
CORP
US
N
1
N
N
N
Encore Capital Group Inc
5493000UVC6H49CIH830
Encore Capital Group Inc
292554102
6664.00000000
NS
USD
259562.80000000
0.862744766020
Long
EC
CORP
US
N
1
N
N
N
CoreSite Realty Corp
549300H0YYORITFM2B74
CoreSite Realty Corp
21870Q105
1560.00000000
NS
USD
195436.80000000
0.649600313634
Long
EC
US
N
1
N
N
N
Glacier Bancorp Inc
549300SMJAUKZB5D7V74
Glacier Bancorp Inc
37637Q105
7648.00000000
NS
USD
351884.48000000
1.169607098412
Long
EC
CORP
US
N
1
N
N
N
Encompass Health Corp
549300FVRPM9DRQZRG64
Encompass Health Corp
29261A100
4686.00000000
NS
USD
387485.34000000
1.287938599038
Long
EC
CORP
US
N
1
N
N
N
Performance Food Group Co
549300EUK8GR9IT1YK57
Performance Food Group Co
71377A103
4143.00000000
NS
USD
197248.23000000
0.655621213977
Long
EC
CORP
US
N
1
N
N
N
Codexis Inc
N/A
Codexis Inc
192005106
18669.00000000
NS
USD
407544.27000000
1.354611238066
Long
EC
CORP
US
N
1
N
N
N
STERIS PLC
N/A
STERIS PLC
000000000
1658.00000000
NS
USD
314257.32000000
1.044540504315
Long
EC
CORP
IE
N
1
N
N
N
Equity LifeStyle Properties Inc
529900PEQG66LENB6798
Equity LifeStyle Properties Inc
29472R108
7255.00000000
NS
USD
459676.80000000
1.527891335973
Long
EC
US
N
1
N
N
N
Terminix Global Holdings Inc
549300GS10644JGL8R77
Terminix Global Holdings Inc
88087E100
5537.00000000
NS
USD
282442.37000000
0.938792756203
Long
EC
CORP
US
N
1
N
N
N
Alarm.com Holdings Inc
549300HIH92U1EKIHZ32
Alarm.com Holdings Inc
011642105
3952.00000000
NS
USD
408834.40000000
1.358899421523
Long
EC
CORP
US
N
1
N
N
N
2021-01-21
WILLIAM BLAIR FUNDS
John Raczek
John Raczek
Principal Financial Officer