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William Blair & Company

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
Cap. Flow
-$222M
Cap. Flow %
-0.62%
Top 10 Hldgs %
24.91%
Holding
1,911
New
111
Increased
662
Reduced
757
Closed
87

Top Buys

Rank Stock Value
1
GEV icon
GE Vernova
GEV
+$116M
2
BA icon
Boeing
BA
+$34M
3
CWAN
Clearwater Analytics
CWAN
+$31.2M
4
NVDA icon
NVIDIA
NVDA
+$27.5M
5
NET icon
Cloudflare
NET
+$26.2M

Top Sells

Rank Stock Value
1
XYZ
Block Inc
XYZ
+$79.4M
2
ZTS icon
Zoetis
ZTS
+$41.3M
3
ACN icon
Accenture
ACN
+$40.8M
4
IJH icon
iShares Core S&P Mid-Cap ETF
IJH
+$40.7M
5
UNH icon
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
XVV icon
1426
iShares ESG Screened S&P 500 ETF
XVV
$674M
$194K ﹤0.01%
4,073
– –
TFI icon
1427
State Street SPDR Nuveen ICE Municipal Bond ETF
TFI
$3.14B
$193K ﹤0.01%
4,313
-891
-17% -$39.6K
QLD icon
1428
ProShares Ultra QQQ
QLD
$14.1B
$193K ﹤0.01%
3,272
– –
EWT icon
1429
iShares MSCI Taiwan ETF
EWT
$10.7B
$192K ﹤0.01%
3,350
-70
-2% -$3.58K
DOC icon
1430
Healthpeak Properties
DOC
$14.8B
$192K ﹤0.01%
10,972
-4,792
-30% -$85.1K
KELYA icon
1431
Kelly Services Class A
KELYA
$528M
$191K ﹤0.01%
16,331
+3,489
+27% +$41.1K
SPHY icon
1432
State Street SPDR Portfolio High Yield Bond ETF
SPHY
$11.6B
$190K ﹤0.01%
7,983
+6,474
+429% +$151K
VFC icon
1433
VF Corp
VFC
$5.89B
$184K ﹤0.01%
15,624
-1,192
-7% -$14.8K
SCHP icon
1434
Schwab US TIPS ETF
SCHP
$16.3B
$183K ﹤0.01%
6,859
-5,942
-46% -$157K
SCHK icon
1435
Schwab 1000 Index ETF
SCHK
$5.92B
$183K ﹤0.01%
6,124
-688
-10% -$19K
CGW icon
1436
Invesco S&P Global Water Index ETF
CGW
$1.08B
$182K ﹤0.01%
2,907
-35
-1% -$2.06K
RSPF icon
1437
Invesco S&P 500 Equal Weight Financials ETF
RSPF
$310M
$179K ﹤0.01%
2,350
– –
IXJ icon
1438
iShares Global Healthcare ETF
IXJ
$4.18B
$175K ﹤0.01%
2,028
-23
-1% -$1.98K
KOS icon
1439
Kosmos Energy
KOS
$1.48B
$172K ﹤0.01%
100,000
+50,000
+100% +$90.5K
VTGN icon
1440
VistaGen Therapeutics
VTGN
$12.8M
$172K ﹤0.01%
85,866
-15,000
-15% -$34.1K
PSEC icon
1441
Prospect Capital
PSEC
$1.17B
$170K ﹤0.01%
53,473
+7,873
+17% +$27.4K
IXC icon
1442
iShares Global Energy ETF
IXC
$2.76B
$170K ﹤0.01%
4,327
– –
IGF icon
1443
iShares Global Infrastructure ETF
IGF
$10.8B
$170K ﹤0.01%
2,872
+71
+3% +$4.05K
XME icon
1444
State Street SPDR S&P Metals & Mining ETF
XME
$4.42B
$170K ﹤0.01%
2,527
-260
-9% -$15.4K
RPAY icon
1445
Repay Holdings
RPAY
$327M
$167K ﹤0.01%
34,635
+19,975
+136% +$91.2K
IEV icon
1446
iShares Europe ETF
IEV
$1.7B
$166K ﹤0.01%
2,622
– –
M icon
1447
Macy's
M
$6.68B
$165K ﹤0.01%
14,132
+2
+0% +$23
HEDJ icon
1448
WisdomTree Europe Hedged Equity Fund
HEDJ
$1.87B
$164K ﹤0.01%
3,418
-3,199
-48% -$153K
RGT
1449
Royce Global Value Trust
RGT
$102M
$163K ﹤0.01%
13,520
– –
PTON icon
1450
Peloton Interactive
PTON
$2.49B
$162K ﹤0.01%
23,378
+37
+0.2% +$240
56 57
58
59 60

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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.