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William Blair & Company Portfolio holdings
AUM
$34.9B
1-Year Est. Return
18.88%
This Fund
S&P 500
This Quarter
Est. Return
+12.61%
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
$36B
AUM Growth
+$2.85B
(+8.6%)
Cap. Flow
-$222M
Cap. Flow
% of AUM
-0.62%
Top 10 Holdings %
Top 10 Hldgs %
24.91%
Holding
1,911
New
111
Increased
662
Reduced
757
Closed
87
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
GE Vernova
GEV
|
+$116M |
| 2 |
Boeing
BA
|
+$34M |
| 3 |
CWAN
Clearwater Analytics
CWAN
|
+$31.2M |
| 4 |
NVIDIA
NVDA
|
+$27.5M |
| 5 |
Cloudflare
NET
|
+$26.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
XYZ
Block Inc
XYZ
|
+$79.4M |
| 2 |
Zoetis
ZTS
|
+$41.3M |
| 3 |
Accenture
ACN
|
+$40.8M |
| 4 |
iShares Core S&P Mid-Cap ETF
IJH
|
+$40.7M |
| 5 |
UnitedHealth
UNH
|
+$36.4M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 27.47% |
| 2 | Financials | 13.92% |
| 3 | Industrials | 12.94% |
| 4 | Healthcare | 11.51% |
| 5 | Consumer Discretionary | 7.98% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1076
Invesco NASDAQ Internet ETF
PNQI
$551M
| $524K | ﹤0.01% |
10,045
| – | – |
|
1077
Popular Inc
BPOP
$11.1B
| $523K | ﹤0.01% |
4,750
-3,100
| -39% | -$306K |
|
1078
Ralph Lauren
RL
$23.6B
| $520K | ﹤0.01% |
1,895
-462
| -20% | -$114K |
|
1079
Innovator Growth-100 Power Buffer ETF July
NJUL
$257M
| $519K | ﹤0.01% |
7,628
| – | – |
|
1080
JPMorgan Ultra-Short Municipal Income ETF
JMST
$7.1B
| $516K | ﹤0.01% |
10,142
+2,123
| +26% | +$108K |
|
1081
Ituran Location and Control
ITRN
$1.05B
| $515K | ﹤0.01% |
13,296
+16
| +0.1% | +$575 |
|
1082
Euronet Worldwide
EEFT
$2.7B
| $509K | ﹤0.01% |
5,019
+12
| +0.2% | +$1.24K |
|
1083
Reddit
RDDT
$31.1B
| $503K | ﹤0.01% |
3,343
+1,075
| +47% | +$122K |
|
1084
Clean Harbors
CLH
$16.3B
| $502K | ﹤0.01% |
2,172
+237
| +12% | +$51.9K |
|
1085
Fluor
FLR
$7.96B
| $494K | ﹤0.01% |
+9,635
| New | +$384K |
|
1086
HUB Group
HUBG
$2.92B
| $492K | ﹤0.01% |
14,723
-547
| -4% | -$18.4K |
|
1087
iShares US Treasury Bond ETF
GOVT
$43.6B
| $492K | ﹤0.01% |
21,403
-2,959
| -12% | -$67.4K |
|
1088
GSK
GSK
$106B
| $489K | ﹤0.01% |
12,744
-4,696
| -27% | -$179K |
|
1089
MYR Group
MYRG
$5.25B
| $486K | ﹤0.01% |
+2,681
| New | +$394K |
|
1090
Phillips Edison & Co
PECO
$5.24B
| $486K | ﹤0.01% |
+13,879
| New | +$491K |
|
1091
Horizon Bancorp
HBNC
$1.04B
| $480K | ﹤0.01% |
31,200
| – | – |
|
1092
State Street SPDR NYSE Technology ETF
XNTK
$2.23B
| $479K | ﹤0.01% |
2,019
| – | – |
|
|
SEE
1093
DELISTED
Sealed Air
SEE
| $478K | ﹤0.01% |
15,414
-1,408
| -8% | -$41.9K |
|
1094
First US Bancshares
FUSB
$90.8M
| $477K | ﹤0.01% |
37,000
-1,000
| -3% | -$12.8K |
|
1095
Vontier
VNT
$4.74B
| $477K | ﹤0.01% |
12,924
-99
| -0.8% | -$3.37K |
|
1096
State Street SPDR S&P 400 Mid Cap Growth ETF
MDYG
$2.95B
| $476K | ﹤0.01% |
5,475
+15
| +0.3% | +$1.23K |
|
|
NDEC
1097
Innovator Growth-100 Power Buffer ETF - December
NDEC
$62.9M
| $476K | ﹤0.01% |
18,411
| – | – |
|
1098
Brookfield Renewable
BEP
$9.96B
| $476K | ﹤0.01% |
+18,641
| New | +$438K |
|
1099
iShares MSCI India ETF
INDA
$6.63B
| $471K | ﹤0.01% |
8,466
-822
| -9% | -$43.9K |
|
1100
Haleon
HLN
$44.2B
| $469K | ﹤0.01% |
45,220
+32,925
| +268% | +$347K |
|
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William Blair & Company's Q2 2025 Portfolio in Review
As of Q2 2025, William Blair & Company held 1,911 positions worth $36B, up 8.6% from $33.2B the previous quarter. Its ten largest holdings account for 25% of the portfolio.
William Blair & Company's Q2 2025 filing shows 111 new, 662 increased, 757 reduced and 87 closed positions. Its largest new stake was Affirm: 304,959 shares worth $21.1M. The largest sale was Block Inc, an estimated $79.4M.
By sector, the portfolio is most concentrated in Technology at 27% of assets, up from 26% a quarter earlier, followed by Financials and Industrials.
- William Blair & Company's largest Q2 2025 buy was Affirm: 304,959 shares worth $21.1M.
- William Blair & Company added most to GE Vernova in Q2 2025, an estimated $116M increase.
- William Blair & Company's biggest Q2 2025 reduction was Block Inc, cutting an estimated $79.4M.
- William Blair & Company fully exited Discover Financial Services in Q2 2025, selling an estimated $5.21M.
- William Blair & Company's ten largest holdings make up 25% of its $36B portfolio in Q2 2025.
- William Blair & Company opened 111 new positions and closed 87 in Q2 2025.
- William Blair & Company's portfolio value rose 8.6% quarter-over-quarter to $36B.
Based on William Blair & Company's 13F filing for Q2 2025, filed 24 Jul 2025.