NPORT-P
false
0000822632
XXXXXXXX
S000008601
C000211719
C000023539
C000023538
WILLIAM BLAIR FUNDS
811-05344
0000822632
SNQR0U5FDV8EZZX4W051
150 NORTH RIVERSIDE PLAZA
CHICAGO
60606
312-364-8000
William Blair Large Cap Growth Fund
S000008601
549300RO7YVMUSCG4F70
2025-12-31
2025-06-30
N
2796515729.29
1662175.33
2794853553.96
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
Salesforce Inc
RCGZFPDMRW58VJ54VR07
Salesforce Inc
79466L302
130440.00000000
NS
USD
35569683.60000000
1.272685058922
Long
EC
CORP
US
N
1
N
N
N
Intuit Inc
VI90HBPH7XSFMB9E4M29
Intuit Inc
461202103
88640.00000000
NS
USD
69815523.20000000
2.498002913286
Long
EC
CORP
US
N
1
N
N
N
Fixed Income Clearing Corp
549300H47WTHXPU08X20
FIXED INC CLEARING CORP.REPO
000000000
18947840.95000000
PA
USD
18947840.95000000
0.677954697238
Long
RA
CORP
US
N
2
Repurchase
N
1.60000000
2025-07-01
18972900.00000000
USD
19326797.77000000
USD
UST
N
N
N
Chipotle Mexican Grill Inc
N/A
Chipotle Mexican Grill Inc
169656105
1135470.00000000
NS
USD
63756640.50000000
2.281215787126
Long
EC
CORP
US
N
1
N
N
N
UnitedHealth Group Inc
549300GHBMY8T5GXDE41
UnitedHealth Group Inc
91324P102
132845.00000000
NS
USD
41443654.65000000
1.482856036992
Long
EC
CORP
US
N
1
N
N
N
Costco Wholesale Corp
29DX7H14B9S6O3FD6V18
Costco Wholesale Corp
22160K105
74800.00000000
NS
USD
74047512.00000000
2.649423684295
Long
EC
CORP
US
N
1
N
N
N
Uber Technologies Inc
549300B2FTG34FILDR98
Uber Technologies Inc
90353T100
523600.00000000
NS
USD
48851880.00000000
1.747922710683
Long
EC
CORP
US
N
1
N
N
N
Agilent Technologies Inc
QUIX8Y7A2WP0XRMW7G29
Agilent Technologies Inc
00846U101
424570.00000000
NS
USD
50103505.70000000
1.792705940853
Long
EC
CORP
US
N
1
N
N
N
Advanced Micro Devices Inc
R2I72C950HOYXII45366
Advanced Micro Devices Inc
007903107
98630.00000000
NS
USD
13995597.00000000
0.500763160923
Long
EC
CORP
US
N
1
N
N
N
Carlyle Group Inc/The
529900NGGVF94UK6PG95
Carlyle Group Inc/The
14316J108
1072047.00000000
NS
USD
55103215.80000000
1.971595818390
Long
EC
CORP
US
N
1
N
N
N
Lam Research Corp
549300I4GMO6D34U1T02
Lam Research Corp
512807306
356350.00000000
NS
USD
34687109.00000000
1.241106495574
Long
EC
CORP
US
N
1
N
N
N
Tyler Technologies Inc
25490040SMU4Z8LBCW70
Tyler Technologies Inc
902252105
65820.00000000
NS
USD
39020728.80000000
1.396163628849
Long
EC
CORP
US
N
1
N
N
N
Microsoft Corp
INR2EJN1ERAN0W5ZP974
Microsoft Corp
594918104
780060.00000000
NS
USD
388009644.60000000
13.88300449768
Long
EC
CORP
US
N
1
N
N
N
Veeva Systems Inc
549300YZEXPDB92M2F02
Veeva Systems Inc
922475108
119680.00000000
NS
USD
34465446.40000000
1.233175396655
Long
EC
CORP
US
N
1
N
N
N
NVIDIA Corp
549300S4KLFTLO7GSQ80
NVIDIA Corp
67066G104
2349040.00000000
NS
USD
371124829.60000000
13.27886497216
Long
EC
CORP
US
N
1
N
N
N
O'Reilly Automotive Inc
549300K2RLMQL149Q332
O'Reilly Automotive Inc
67103H107
679490.00000000
NS
USD
61242433.70000000
2.191257342025
Long
EC
CORP
US
N
1
N
N
N
Linde PLC
5299003QR1WT0EF88V51
Linde PLC
000000000
79890.00000000
NS
USD
37482790.20000000
1.341136108791
Long
EC
CORP
IE
N
1
N
N
N
TransUnion
549300ZS772LUNUMRB03
TransUnion
89400J107
549340.00000000
NS
USD
48341920.00000000
1.729676316367
Long
EC
CORP
US
N
1
N
N
N
Martin Marietta Materials Inc
5299005MZ4WZECVATV08
Martin Marietta Materials Inc
573284106
56550.00000000
NS
USD
31043688.00000000
1.110744709897
Long
EC
CORP
US
N
1
N
N
N
Monster Beverage Corp
52990090AP0E7HCB6F33
Monster Beverage Corp
61174X109
609180.00000000
NS
USD
38159035.20000000
1.365332188727
Long
EC
CORP
US
N
1
N
N
N
Mastercard Inc
AR5L2ODV9HN37376R084
Mastercard Inc
57636Q104
224100.00000000
NS
USD
125930754.00000000
4.505808679011
Long
EC
CORP
US
N
1
N
N
N
Broadcom Inc
549300WV6GIDOZJTV909
Broadcom Inc
11135F101
504100.00000000
NS
USD
138955165.00000000
4.971822756262
Long
EC
CORP
US
N
1
N
N
N
Apollo Global Management Inc
254900LMFT1CY9IYB476
Apollo Global Management Inc
03769M106
180121.00000000
NS
USD
25553766.27000000
0.914315035712
Long
EC
CORP
US
N
1
N
N
N
ServiceNow Inc
549300HJTQM36M0E1G39
ServiceNow Inc
81762P102
62530.00000000
NS
USD
64285842.40000000
2.300150657586
Long
EC
CORP
US
N
1
N
N
N
Meta Platforms Inc
BQ4BKCS1HXDV9HN80Z93
Meta Platforms Inc
30303M102
262700.00000000
NS
USD
193896243.00000000
6.937617276056
Long
EC
CORP
US
N
1
N
N
N
Oracle Corp
1Z4GXXU7ZHVWFCD8TV52
Oracle Corp
68389X105
132550.00000000
NS
USD
28979406.50000000
1.036884614542
Long
EC
CORP
US
N
1
N
N
N
Live Nation Entertainment Inc
5493007B9BM9ZXJINO78
Live Nation Entertainment Inc
538034109
320742.00000000
NS
USD
48521849.76000000
1.736114212182
Long
EC
CORP
US
N
1
N
N
N
Datadog Inc
549300F6JNO0KRPO1K63
Datadog Inc
23804L103
428460.00000000
NS
USD
57555031.80000000
2.059321917545
Long
EC
CORP
US
N
1
N
N
N
Copart Inc
549300KVYX3JWMYEHU61
Copart Inc
217204106
749800.00000000
NS
USD
36792686.00000000
1.316444145986
Long
EC
CORP
US
N
1
N
N
N
Apple Inc
HWUPKR0MPOU8FGXBT394
Apple Inc
037833100
991860.00000000
NS
USD
203499916.20000000
7.281237183667
Long
EC
CORP
US
N
1
N
N
N
West Pharmaceutical Services Inc
5493007NKRGM1RJQ1P16
West Pharmaceutical Services Inc
955306105
65530.00000000
NS
USD
14337964.00000000
0.513013069313
Long
EC
CORP
US
N
1
N
N
N
Amazon.com Inc
ZXTILKJKG63JELOEG630
Amazon.com Inc
023135106
1049000.00000000
NS
USD
230140110.00000000
8.234424650762
Long
EC
CORP
US
N
1
N
N
N
IDEXX Laboratories Inc
OGMTXK0LUU1HKV2P0J84
IDEXX Laboratories Inc
45168D104
131950.00000000
NS
USD
70770063.00000000
2.532156395090
Long
EC
CORP
US
N
1
N
N
N
2025-07-23
WILLIAM BLAIR FUNDS
John Raczek
John Raczek
Principal Financial Officer