We are live on
!
Find out more
William Blair & Company Portfolio holdings
AUM
$34.9B
1-Year Est. Return
18.88%
This Fund
S&P 500
This Quarter
Est. Return
+1.73%
1 Year Est. Return
+18.88%
3 Year Est. Return
+73.84%
5 Year Est. Return
+90.13%
10 Year Est. Return
+563.35%
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 | |
|---|---|---|---|---|---|---|
1251
NetEase
NTES
$85.4B
| $351K | ﹤0.01% |
2,552
+867
| +51% | +$123K |
|
1252
Equinor
EQNR
$97.4B
| $351K | ﹤0.01% |
14,837
+389
| +3% | +$9.17K |
|
|
CSGS
1253
DELISTED
CSG Systems International
CSGS
| $351K | ﹤0.01% |
4,571
-1,099
| -19% | -$81.1K |
|
1254
ABM Industries
ABM
$2.81B
| $350K | ﹤0.01% |
8,267
+136
| +2% | +$5.98K |
|
1255
Portland General Electric
POR
$5.66B
| $349K | ﹤0.01% |
7,273
+939
| +15% | +$44.3K |
|
1256
STAG Industrial
STAG
$7.09B
| $348K | ﹤0.01% |
9,465
+637
| +7% | +$24.2K |
|
1257
Webster Financial
WBS
$12.8B
| $347K | ﹤0.01% |
5,514
+102
| +2% | +$6.06K |
|
1258
FlexShares Morningstar US Market Factors Tilt Index Fund
TILT
$2.25B
| $346K | ﹤0.01% |
1,391
+442
| +47% | +$109K |
|
|
ITIC
1259
Investors Title Co
ITIC
$540M
| $345K | ﹤0.01% |
1,384
| – | – |
|
1260
Kratos Defense & Security Solutions
KTOS
$11.7B
| $344K | ﹤0.01% |
4,537
+1,297
| +40% | +$106K |
|
1261
Franklin FTSE Japan ETF
FLJP
$4.05B
| $344K | ﹤0.01% |
9,991
+256
| +3% | +$9.03K |
|
1262
DaVita
DVA
$11.7B
| $342K | ﹤0.01% |
+3,008
| New | +$366K |
|
1263
PTC
PTC
$16.4B
| $339K | ﹤0.01% |
1,944
-82
| -4% | -$15.2K |
|
1264
iShares US Regional Banks ETF
IAT
$678M
| $338K | ﹤0.01% |
6,124
+422
| +7% | +$21.9K |
|
1265
Timken Company
TKR
$8.77B
| $337K | ﹤0.01% |
4,005
-796
| -17% | -$63.3K |
|
1266
Willdan Group
WLDN
$1.24B
| $337K | ﹤0.01% |
+3,250
| New | +$320K |
|
1267
Vodafone
VOD
$36.4B
| $336K | ﹤0.01% |
25,473
-298
| -1% | -$3.6K |
|
1268
Ambev
ABEV
$45.4B
| $336K | ﹤0.01% |
136,150
-4,429
| -3% | -$10.5K |
|
1269
Concrete Pumping Holdings
BBCP
$473M
| $336K | ﹤0.01% |
50,000
| – | – |
|
|
CSW
1270
CSW Industrials
CSW
$5.67B
| $332K | ﹤0.01% |
+1,095
| New | +$292K |
|
1271
Minerals Technologies
MTX
$2.32B
| $331K | ﹤0.01% |
5,430
| – | – |
|
1272
BHP
BHP
$230B
| $331K | ﹤0.01% |
5,478
+689
| +14% | +$39.1K |
|
1273
Cincinnati Financial
CINF
$26.7B
| $328K | ﹤0.01% |
2,011
+13
| +0.7% | +$2.11K |
|
|
GAP
1274
The Gap Inc
GAP
$7.74B
| $328K | ﹤0.01% |
12,827
-329
| -3% | -$7.97K |
|
1275
Macy's
M
$6.55B
| $327K | ﹤0.01% |
14,836
+286
| +2% | +$5.86K |
|
Similar funds
SAM
VIA
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.