We are live on
!
Find out more
William Blair & Company Portfolio holdings
AUM
$38.4B
1-Year Est. Return
25.71%
This Fund
S&P 500
This Quarter
Est. Return
+7.16%
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
$37.6B
AUM Growth
+$1.57B
(+4.4%)
Cap. Flow
-$160M
Cap. Flow
% of AUM
-0.43%
Top 10 Holdings %
Top 10 Hldgs %
26.02%
Holding
1,919
New
98
Increased
697
Reduced
774
Closed
75
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Meta Platforms (Facebook)
META
|
+$76.1M |
| 2 |
Applovin
APP
|
+$75.3M |
| 3 |
ServiceNow
NOW
|
+$66.6M |
| 4 |
CWAN
Clearwater Analytics
CWAN
|
+$65.8M |
| 5 |
Diamondback Energy
FANG
|
+$30.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
CYBR
CyberArk
CYBR
|
+$70.7M |
| 2 |
Adobe
ADBE
|
+$61.7M |
| 3 |
Microsoft
MSFT
|
+$45.7M |
| 4 |
Workday
WDAY
|
+$42.6M |
| 5 |
Pool Corp
POOL
|
+$41.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 27.36% |
| 2 | Financials | 13.36% |
| 3 | Industrials | 12.59% |
| 4 | Healthcare | 10.97% |
| 5 | Consumer Discretionary | 7.45% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1201
Zions Bancorporation
ZION
$10.5B
| $393K | ﹤0.01% |
6,946
+915
| +15% | +$50.9K |
|
1202
Globe Life
GL
$14B
| $389K | ﹤0.01% |
2,721
-19
| -0.7% | -$2.58K |
|
1203
Unum
UNM
$14.7B
| $389K | ﹤0.01% |
4,998
-541
| -10% | -$40.5K |
|
1204
T. Rowe Price Dividend Growth ETF
TDVG
$1.45B
| $387K | ﹤0.01% |
8,803
-391
| -4% | -$16.8K |
|
1205
Raymond James Financial
RJF
$34.8B
| $386K | ﹤0.01% |
2,238
+465
| +26% | +$77.1K |
|
1206
Trip.com Group
TCOM
$28.3B
| $383K | ﹤0.01% |
5,093
-305
| -6% | -$20.4K |
|
1207
Corpay
CPAY
$27.9B
| $382K | ﹤0.01% |
1,327
-1
| -0.1% | -$319 |
|
1208
ProShares Russell 2000 Dividend Growers ETF
SMDV
$708M
| $382K | ﹤0.01% |
5,730
-216
| -4% | -$14.4K |
|
1209
Advanced Energy
AEIS
$13.2B
| $378K | ﹤0.01% |
2,221
+311
| +16% | +$46.8K |
|
1210
Deckers Outdoor
DECK
$12.7B
| $377K | ﹤0.01% |
3,721
-1,947
| -34% | -$212K |
|
1211
Green Brick Partners
GRBK
$3.04B
| $377K | ﹤0.01% |
5,105
| – | – |
|
1212
Genpact
G
$5.78B
| $377K | ﹤0.01% |
8,991
+1,203
| +15% | +$52.9K |
|
1213
FirstEnergy
FE
$27.1B
| $377K | ﹤0.01% |
8,218
-476
| -5% | -$20.3K |
|
|
DFTX
1214
Definium Therapeutics
DFTX
$5.9B
| $376K | ﹤0.01% |
31,905
+9,687
| +44% | +$90.3K |
|
1215
Recursion Pharmaceuticals
RXRX
$1.78B
| $376K | ﹤0.01% |
77,033
+33
| +0% | +$173 |
|
1216
Cannae Holdings
CNNE
$675M
| $376K | ﹤0.01% |
20,509
-703
| -3% | -$13.9K |
|
1217
ABM Industries
ABM
$2.82B
| $375K | ﹤0.01% |
8,131
+1
| +0% | +$47 |
|
1218
Federal Realty Investment Trust
FRT
$10.3B
| $375K | ﹤0.01% |
3,697
-36
| -1% | -$3.48K |
|
1219
Silicon Laboratories
SLAB
$7.28B
| $374K | ﹤0.01% |
2,850
| – | – |
|
1220
iShares Ultra Short Duration Bond Active ETF
ICSH
$8.4B
| $373K | ﹤0.01% |
7,346
+2
| +0% | +$101 |
|
|
SCS
1221
DELISTED
Steelcase
SCS
| $373K | ﹤0.01% |
21,659
| – | – |
|
1222
Teva Pharmaceuticals
TEVA
$42.6B
| $372K | ﹤0.01% |
18,438
-162
| -0.9% | -$2.85K |
|
|
LENZ
1223
LENZ Therapeutics
LENZ
$145M
| $372K | ﹤0.01% |
+7,992
| New | +$294K |
|
1224
Spire
SR
$4.9B
| $372K | ﹤0.01% |
4,560
-1,216
| -21% | -$92.5K |
|
1225
UBS Group
UBS
$176B
| $372K | ﹤0.01% |
9,066
+19
| +0.2% | +$738 |
|
Similar funds
HF
William Blair & Company's Q3 2025 Portfolio in Review
As of Q3 2025, William Blair & Company held 1,919 positions worth $37.6B, up 4.4% from $36B the previous quarter. Its ten largest holdings account for 26% of the portfolio.
William Blair & Company's Q3 2025 filing shows 98 new, 697 increased, 774 reduced and 75 closed positions. Its largest new stake was Miami International Holdings: 363,765 shares worth $14.6M. The largest sale was CyberArk, an estimated $70.7M.
By sector, the portfolio is most concentrated in Technology at 27% of assets, down from 27% a quarter earlier, followed by Financials and Industrials.
- William Blair & Company's largest Q3 2025 buy was Miami International Holdings: 363,765 shares worth $14.6M.
- William Blair & Company added most to Meta Platforms (Facebook) in Q3 2025, an estimated $76.1M increase.
- William Blair & Company's biggest Q3 2025 reduction was CyberArk, cutting an estimated $70.7M.
- William Blair & Company fully exited Stride in Q3 2025, selling an estimated $7.47M.
- William Blair & Company's ten largest holdings make up 26% of its $37.6B portfolio in Q3 2025.
- William Blair & Company opened 98 new positions and closed 75 in Q3 2025.
- William Blair & Company's portfolio value rose 4.4% quarter-over-quarter to $37.6B.
Based on William Blair & Company's 13F filing for Q3 2025, filed 12 Nov 2025.