0001752724-20-022247.txt : 20200218
0001752724-20-022247.hdr.sgml : 20200218
20200218105057
ACCESSION NUMBER: 0001752724-20-022247
CONFORMED SUBMISSION TYPE: NPORT-P
PUBLIC DOCUMENT COUNT: 1
CONFORMED PERIOD OF REPORT: 20191231
FILED AS OF DATE: 20200218
PERIOD START: 20191231
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: 20624010
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
S000008594
William Blair Growth Fund
C000023523
Class N
WBGSX
C000023524
Class I
BGFIX
C000211716
Class R6
BGFRX
NPORT-P
1
primary_doc.xml
NPORT-P
false
0000822632
XXXXXXXX
S000008594
C000023523
C000211716
C000023524
WILLIAM BLAIR FUNDS
811-05344
0000822632
SNQR0U5FDV8EZZX4W051
150 NORTH RIVERSIDE PLAZA
CHICAGO
60606
312-364-8000
William Blair Growth Fund
S000008594
549300CN8MT9K8UCDE27
2019-12-31
2019-12-31
N
253948641.5
271612.37
253677029.13
0
0
0
0
0
0
0
0
0
0
0
0
0
0
N
Adobe Inc
FU4LY2G4933NH2E1CP29
Adobe Inc
00724F101
17307.00000000
NS
USD
5708021.67000000
2.250113733031
Long
EC
CORP
US
N
1
N
N
N
Trex Co Inc
N/A
Trex Co Inc
89531P105
18752.00000000
NS
USD
1685429.76000000
0.664399833828
Long
EC
CORP
US
N
1
N
N
N
Alphabet Inc
5493006MHB84DD0ZWV18
Alphabet Inc
02079K305
13370.00000000
NS
USD
17907644.30000000
7.059229746349
Long
EC
CORP
US
N
1
N
N
N
Cameco Corp
N4BHALMXL3GMZKCUON55
Cameco Corp
13321L108
150171.00000000
NS
USD
1336521.90000000
0.526859646923
Long
EC
CORP
CA
N
1
N
N
N
BJ's Wholesale Club Holdings Inc
549300UCIWH1C93V0J03
BJ's Wholesale Club Holdings Inc
05550J101
125783.00000000
NS
USD
2860305.42000000
1.127538204704
Long
EC
CORP
US
N
1
N
N
N
Live Nation Entertainment Inc
5493007B9BM9ZXJINO78
Live Nation Entertainment Inc
538034109
35896.00000000
NS
USD
2565487.12000000
1.011320232185
Long
EC
CORP
US
N
1
N
N
N
Brink's Co/The
XFP140TFNOQMIVFTVQ13
Brink's Co/The
109696104
28572.00000000
NS
USD
2590908.96000000
1.021341573135
Long
EC
CORP
US
N
1
N
N
N
Microsoft Corp
INR2EJN1ERAN0W5ZP974
Microsoft Corp
594918104
144535.00000000
NS
USD
22793169.50000000
8.985113700744
Long
EC
CORP
US
N
1
N
N
N
Texas Instruments Inc
WDJNR2L6D8RWOEB8T652
Texas Instruments Inc
882508104
42858.00000000
NS
USD
5498252.82000000
2.167422426404
Long
EC
CORP
US
N
1
N
N
N
Zoetis Inc
549300HD9Q1LOC9KLJ48
Zoetis Inc
98978V103
35896.00000000
NS
USD
4750835.60000000
1.872789040573
Long
EC
CORP
US
N
1
N
N
N
Horizon Therapeutics Plc
N/A
Horizon Therapeutics Plc
000000000
108564.00000000
NS
USD
3930016.80000000
1.549220602857
Long
EC
CORP
IE
N
1
N
N
N
Booz Allen Hamilton Holding Corp
529900JPV47PIUWMA015
Booz Allen Hamilton Holding Corp
099502106
34310.00000000
NS
USD
2440470.30000000
0.962038347882
Long
EC
CORP
US
N
1
N
N
N
Arista Networks Inc
635400H1WKBLOQERUU95
Arista Networks Inc
040413106
15206.00000000
NS
USD
3092900.40000000
1.219227618128
Long
EC
CORP
US
N
1
N
N
N
Encore Capital Group Inc
5493000UVC6H49CIH830
Encore Capital Group Inc
292554102
50477.00000000
NS
USD
1784866.72000000
0.703598085377
Long
EC
CORP
US
N
1
N
N
N
Coca-Cola Co/The
UWJKFUJFZ02DKWI3RY53
Coca-Cola Co/The
191216100
136654.00000000
NS
USD
7563798.90000000
2.981664885441
Long
EC
CORP
US
N
1
N
N
N
Advance Auto Parts Inc
529900UCNQ5H9FSL0Y70
Advance Auto Parts Inc
00751Y106
23712.00000000
NS
USD
3797713.92000000
1.497066538907
Long
EC
CORP
US
N
1
N
N
N
Laureate Education Inc
5JL7TMOH5TY3IUYSUP91
Laureate Education Inc
518613203
133478.00000000
NS
USD
2350547.58000000
0.926590629061
Long
EC
CORP
US
N
1
N
N
N
Raytheon Co
YR6K3WJN0KKLUPZSNL57
Raytheon Co
755111507
24303.00000000
NS
USD
5340341.22000000
2.105173353028
Long
EC
CORP
US
N
1
N
N
N
Microchip Technology Inc
5493007PTFULNYZJ1R12
Microchip Technology Inc
595017104
32710.00000000
NS
USD
3425391.20000000
1.350296166644
Long
EC
CORP
US
N
1
N
N
N
Linde PLC
8945002PAZHZLBGKGF02
Linde PLC
000000000
15961.00000000
NS
USD
3398096.90000000
1.339536698160
Long
EC
CORP
IE
N
1
N
N
N
Mastercard Inc
AR5L2ODV9HN37376R084
Mastercard Inc
57636Q104
34484.00000000
NS
USD
10296577.56000000
4.058931782397
Long
EC
CORP
US
N
1
N
N
N
BWX Technologies Inc
549300NP85N265KWMS58
BWX Technologies Inc
05605H100
104958.00000000
NS
USD
6515792.64000000
2.568538689666
Long
EC
CORP
US
N
1
N
N
N
Codexis Inc
N/A
Codexis Inc
192005106
65220.00000000
NS
USD
1042867.80000000
0.411100604408
Long
EC
CORP
US
N
1
N
N
N
Grand Canyon Education Inc
529900XFER799IYOSW74
Grand Canyon Education Inc
38526M106
30060.00000000
NS
USD
2879447.40000000
1.135084012090
Long
EC
CORP
US
N
1
N
N
N
Fortive Corp
549300MU9YQJYHDQEF63
Fortive Corp
34959J108
50773.00000000
NS
USD
3878549.47000000
1.528932076862
Long
EC
CORP
US
N
1
N
N
N
Activision Blizzard Inc
549300TPQQDBP9GNOF40
Activision Blizzard Inc
00507V109
60494.00000000
NS
USD
3594553.48000000
1.416980280921
Long
EC
CORP
US
N
1
N
N
N
Stryker Corp
5493002F0SC4JTBU5137
Stryker Corp
863667101
16716.00000000
NS
USD
3509357.04000000
1.383395671273
Long
EC
CORP
US
N
1
N
N
N
Take-Two Interactive Software Inc
BOMSTHHJK882EWYX3334
Take-Two Interactive Software Inc
874054109
20624.00000000
NS
USD
2524996.32000000
0.995358676605
Long
EC
CORP
US
N
1
N
N
N
Ball Corp
0BGI85ALH27ZJP15DY16
Ball Corp
058498106
71759.00000000
NS
USD
4640654.53000000
1.829355439046
Long
EC
CORP
US
N
1
N
N
N
Amazon.com Inc
ZXTILKJKG63JELOEG630
Amazon.com Inc
023135106
8309.00000000
NS
USD
15353702.56000000
6.052460726403
Long
EC
CORP
US
N
1
N
N
N
Intercontinental Exchange Inc
5493000F4ZO33MV32P92
Intercontinental Exchange Inc
45866F104
62432.00000000
NS
USD
5778081.60000000
2.277731499701
Long
EC
CORP
US
N
1
N
N
N
Estee Lauder Cos Inc/The
549300VFZ8XJ9NUPU221
Estee Lauder Cos Inc/The
518439104
14943.00000000
NS
USD
3086327.22000000
1.216636457224
Long
EC
CORP
US
N
1
N
N
N
Genpact Ltd
529900OSEC6Q0L4L5B35
Genpact Ltd
000000000
80987.00000000
NS
USD
3415221.79000000
1.346287364572
Long
EC
CORP
BM
N
1
N
N
N
Luxfer Holdings PLC
21380045UF5SJYZOXE41
Luxfer Holdings PLC
000000000
110413.00000000
NS
USD
2043744.63000000
0.805648283176
Long
EC
CORP
GB
N
1
N
N
N
Virtu Financial Inc
5493001OPW2K42CH3884
Virtu Financial Inc
928254101
149803.00000000
NS
USD
2395349.97000000
0.944251822175
Long
EC
CORP
US
N
1
N
N
N
Portola Pharmaceuticals Inc
549300BM3O4O0CNBGJ64
Portola Pharmaceuticals Inc
737010108
93927.00000000
NS
USD
2242976.76000000
0.884185993383
Long
EC
CORP
US
N
1
N
N
N
Abbott Laboratories
HQD377W2YR662HK5JX27
Abbott Laboratories
002824100
59969.00000000
NS
USD
5208907.34000000
2.053361850643
Long
EC
CORP
US
N
1
N
N
N
Fidelity National Information Services Inc
6WQI0GK1PRFVBA061U48
Fidelity National Information Services Inc
31620M106
38362.00000000
NS
USD
5335770.58000000
2.103371597459
Long
EC
CORP
US
N
1
N
N
N
Copart Inc
549300KVYX3JWMYEHU61
Copart Inc
217204106
58852.00000000
NS
USD
5352000.88000000
2.109769614676
Long
EC
CORP
US
N
1
N
N
N
National Instruments Corp
549300TP4OOPCYWDUP86
National Instruments Corp
636518102
64557.00000000
NS
USD
2733343.38000000
1.077489510727
Long
EC
CORP
US
N
1
N
N
N
Guidewire Software Inc
549300WXSG0J8IXZCK32
Guidewire Software Inc
40171V100
18358.00000000
NS
USD
2015157.66000000
0.794379241554
Long
EC
CORP
US
N
1
N
N
N
Verra Mobility Corp
N/A
Verra Mobility Corp
92511U102
132581.00000000
NS
USD
1854808.19000000
0.731169154874
Long
EC
CORP
US
N
1
N
N
N
Burlington Stores Inc
5299003Z37DVGKKC1W09
Burlington Stores Inc
122017106
17275.00000000
NS
USD
3939218.25000000
1.552847833132
Long
EC
CORP
US
N
1
N
N
N
Costco Wholesale Corp
29DX7H14B9S6O3FD6V18
Costco Wholesale Corp
22160K105
14877.00000000
NS
USD
4372647.84000000
1.723706657633
Long
EC
CORP
US
N
1
N
N
N
Teleflex Inc
UUL85LWXB4NGSWWXIQ25
Teleflex Inc
879369106
8572.00000000
NS
USD
3226843.68000000
1.272028331089
Long
EC
CORP
US
N
1
N
N
N
Rogers Corp
PW0CN80KNFR7RUOOKJ84
Rogers Corp
775133101
9064.00000000
NS
USD
1130552.72000000
0.445666177926
Long
EC
CORP
US
N
1
N
N
N
Ulta Salon Cosmetics & Fragrance Inc
529900CIV6HN8M28YM82
Ulta Salon Cosmetics & Fragrance Inc
90384S303
7061.00000000
NS
USD
1787421.54000000
0.704605200608
Long
EC
CORP
US
N
1
N
N
N
Sabre Corp
529900VKCYZW8GZ4WW58
Sabre Corp
78573M104
155012.00000000
NS
USD
3478469.28000000
1.371219653560
Long
EC
CORP
US
N
1
N
N
N
Perspecta Inc
549300XIT2GJKMZC0O65
Perspecta Inc
715347100
116357.00000000
NS
USD
3076479.08000000
1.212754300439
Long
EC
CORP
US
N
1
N
N
N
FIXED INC CLEARING CORP.REPO
549300H47WTHXPU08X20
FIXED INC CLEARING CORP.REPO
000000000
875219.24000000
PA
USD
875219.24000000
0.345013201629
Long
RA
CORP
US
N
2
Repurchase
N
0.12000000
2020-01-02
865000.00000000
USD
893650.53000000
USD
UST
N
N
N
Dolby Laboratories Inc
549300X04FB2QPCJ5J24
Dolby Laboratories Inc
25659T107
66208.00000000
NS
USD
4555110.40000000
1.795633769293
Long
EC
CORP
US
N
1
N
N
N
Pure Storage Inc
549300NPDB0BZTK3WO90
Pure Storage Inc
74624M102
233464.00000000
NS
USD
3994569.04000000
1.574667226945
Long
EC
CORP
US
N
1
N
N
N
CoStar Group Inc
N/A
CoStar Group Inc
22160N109
6266.00000000
NS
USD
3748947.80000000
1.477842835378
Long
EC
CORP
US
N
1
N
N
N
UnitedHealth Group Inc
549300GHBMY8T5GXDE41
UnitedHealth Group Inc
91324P102
30050.00000000
NS
USD
8834099.00000000
3.482419764334
Long
EC
CORP
US
N
1
N
N
N
Agilent Technologies Inc
QUIX8Y7A2WP0XRMW7G29
Agilent Technologies Inc
00846U101
46274.00000000
NS
USD
3947634.94000000
1.556165709421
Long
EC
CORP
US
N
1
N
N
N
Knowles Corp
5493003EO323TDZQU148
Knowles Corp
49926D109
67883.00000000
NS
USD
1435725.45000000
0.565965887776
Long
EC
CORP
US
N
1
N
N
N
Advanced Micro Devices Inc
R2I72C950HOYXII45366
Advanced Micro Devices Inc
007903107
108541.00000000
NS
USD
4977690.26000000
1.962215608197
Long
EC
CORP
US
N
1
N
N
N
2020-01-15
WILLIAM BLAIR FUNDS
Colette Garavalia
Colette Garavalia
Principal Financial Officer