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William Blair & Company Portfolio holdings
AUM
$38.4B
1-Year Est. Return
25.71%
This Fund
S&P 500
This Quarter
Est. Return
+1.73%
1 Year Est. Return
+25.71%
3 Year Est. Return
+88.7%
5 Year Est. Return
+104.53%
10 Year Est. Return
+665.86%
AUM
$37.3B
AUM Growth
-$310M
(-0.82%)
Cap. Flow
-$212M
Cap. Flow
% of AUM
-0.57%
Top 10 Holdings %
Top 10 Hldgs %
27.41%
Holding
1,963
New
120
Increased
759
Reduced
753
Closed
96
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
BWX Technologies
BWXT
|
+$46.6M |
| 2 |
Meta Platforms (Facebook)
META
|
+$38.3M |
| 3 |
ServiceNow
NOW
|
+$37.6M |
| 4 |
Vanguard FTSE All-World ex-US ETF
VEU
|
+$32.4M |
| 5 |
SPDR Gold Trust
GLD
|
+$29.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
FISV
Fiserv Inc
FISV
|
+$114M |
| 2 |
CoStar Group
CSGP
|
+$78.3M |
| 3 |
CWAN
Clearwater Analytics
CWAN
|
+$75.3M |
| 4 |
Pool Corp
POOL
|
+$54M |
| 5 |
Zoetis
ZTS
|
+$51.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 25.8% |
| 2 | Financials | 13.4% |
| 3 | Industrials | 12.04% |
| 4 | Healthcare | 11.22% |
| 5 | Communication Services | 7.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
976
Invesco Actively Managed Exch-Traded Commodity Fd Tr Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF
PDBC
$6.61B
| $846K | ﹤0.01% |
63,864
+433
| +0.7% | +$5.86K |
|
977
Global X NASDAQ-100 Covered Call ETF
QYLD
$8.27B
| $845K | ﹤0.01% |
47,834
-74,334
| -61% | -$1.29M |
|
978
Entegris
ENTG
$23.3B
| $845K | ﹤0.01% |
10,026
-95
| -0.9% | -$8.25K |
|
|
SVM
979
Silvercorp Metals
SVM
$2.68B
| $834K | ﹤0.01% |
100,000
| – | – |
|
980
DT Midstream
DTM
$13.9B
| $832K | ﹤0.01% |
6,952
+146
| +2% | +$16.8K |
|
|
CNTN
981
Canton Strategic Holdings
CNTN
$142M
| $831K | ﹤0.01% |
+274,324
| New | +$782K |
|
982
Reddit
RDDT
$30.6B
| $828K | ﹤0.01% |
3,602
+776
| +27% | +$163K |
|
983
iShares Core MSCI Europe ETF
IEUR
$9.17B
| $827K | ﹤0.01% |
11,649
+65
| +0.6% | +$4.5K |
|
984
Wayfair
W
$14.5B
| $827K | ﹤0.01% |
8,233
-357
| -4% | -$34.3K |
|
985
Vanguard FTSE Pacific ETF
VPL
$8.45B
| $825K | ﹤0.01% |
9,122
+1,735
| +23% | +$157K |
|
986
iShares Expanded Tech-Software Sector ETF
IGV
$14.9B
| $824K | ﹤0.01% |
7,794
-483
| -6% | -$53.1K |
|
987
Schwab Emerging Markets Equity ETF
SCHE
$12.9B
| $823K | ﹤0.01% |
25,120
-3,874
| -13% | -$129K |
|
988
RE/MAX Holdings
RMAX
$246M
| $819K | ﹤0.01% |
107,877
+1
| +0% | +$8 |
|
989
Dollar Tree
DLTR
$24.7B
| $817K | ﹤0.01% |
6,645
-2,673
| -29% | -$286K |
|
990
Genuine Parts
GPC
$18.8B
| $817K | ﹤0.01% |
6,643
-2,696
| -29% | -$349K |
|
991
Deckers Outdoor
DECK
$12.9B
| $817K | ﹤0.01% |
7,877
+4,156
| +112% | +$390K |
|
992
Goldman Sachs Access Treasury 0-1 Year ETF
GBIL
$7.59B
| $809K | ﹤0.01% |
8,099
+150
| +2% | +$15K |
|
993
Loews
L
$23.1B
| $807K | ﹤0.01% |
7,663
-145
| -2% | -$15K |
|
994
Clearway Energy Class C
CWEN
$7.02B
| $792K | ﹤0.01% |
23,820
+500
| +2% | +$16.6K |
|
995
Equity Residential
EQR
$24.6B
| $791K | ﹤0.01% |
12,540
+618
| +5% | +$37.9K |
|
996
GoDaddy
GDDY
$11.6B
| $787K | ﹤0.01% |
6,341
-149
| -2% | -$19.3K |
|
997
HSBC
HSBC
$355B
| $786K | ﹤0.01% |
9,992
-440
| -4% | -$31.5K |
|
998
GSK
GSK
$103B
| $785K | ﹤0.01% |
16,010
-710
| -4% | -$33.1K |
|
999
Dollar General
DG
$26.9B
| $784K | ﹤0.01% |
5,902
-829
| -12% | -$92.5K |
|
1000
W.R. Berkley
WRB
$26.1B
| $783K | ﹤0.01% |
11,171
+1,676
| +18% | +$124K |
|
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William Blair & Company's Q4 2025 Portfolio in Review
As of Q4 2025, William Blair & Company held 1,963 positions worth $37.3B, down 0.82% from $37.6B the previous quarter. Its ten largest holdings account for 27% of the portfolio.
William Blair & Company's Q4 2025 filing shows 120 new, 759 increased, 753 reduced and 96 closed positions. Its largest new stake was Wingstop: 90,773 shares worth $21.6M. The largest sale was Fiserv Inc, an estimated $114M.
By sector, the portfolio is most concentrated in Technology at 26% of assets, down from 27% a quarter earlier, followed by Financials and Industrials.
- William Blair & Company's largest Q4 2025 buy was Wingstop: 90,773 shares worth $21.6M.
- William Blair & Company added most to BWX Technologies in Q4 2025, an estimated $46.6M increase.
- William Blair & Company's biggest Q4 2025 reduction was Fiserv Inc, cutting an estimated $114M.
- William Blair & Company fully exited SAP in Q4 2025, selling an estimated $9.19M.
- William Blair & Company's ten largest holdings make up 27% of its $37.3B portfolio in Q4 2025.
- William Blair & Company opened 120 new positions and closed 96 in Q4 2025.
- William Blair & Company's portfolio value fell 0.82% quarter-over-quarter to $37.3B.
Based on William Blair & Company's 13F filing for Q4 2025, filed 17 Feb 2026.