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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 | |
|---|---|---|---|---|---|---|
601
International Paper
IP
$22B
| $3.33M | 0.01% |
71,018
-1,000
| -1% | -$47.3K |
|
|
BNY
602
Bank of New York Mellon
BNY
$107B
| $3.32M | 0.01% |
36,449
+12,537
| +52% | +$1.06M |
|
603
Norwegian Cruise Line
NCLH
$8.84B
| $3.32M | 0.01% |
+163,493
| New | +$2.93M |
|
604
Western Alliance Bancorporation
WAL
$8.87B
| $3.31M | 0.01% |
42,426
| – | – |
|
605
Enovix
ENVX
$1.03B
| $3.3M | 0.01% |
364,569
+11,660
| +3% | +$76K |
|
606
Acuity Brands
AYI
$10.8B
| $3.29M | 0.01% |
11,040
-1,431
| -11% | -$370K |
|
607
Primerica
PRI
$9.89B
| $3.25M | 0.01% |
11,864
+446
| +4% | +$118K |
|
608
Blackstone Secured Lending
BXSL
$5.72B
| $3.23M | 0.01% |
105,047
-2,419
| -2% | -$73.8K |
|
609
iShares Russell Mid-Cap Value ETF
IWS
$16B
| $3.22M | 0.01% |
24,399
-129
| -0.5% | -$16.2K |
|
610
Innovator US Small Cap Power Buffer ETF April
KAPR
$218M
| $3.2M | 0.01% |
98,700
-3,931
| -4% | -$122K |
|
611
Sprout Social
SPT
$621M
| $3.18M | 0.01% |
152,302
-61,135
| -29% | -$1.3M |
|
612
Best Buy
BBY
$17.3B
| $3.16M | 0.01% |
47,055
-2,320
| -5% | -$158K |
|
613
Airgain
AIRG
$72.4M
| $3.13M | 0.01% |
749,044
-1,256
| -0.2% | -$4.95K |
|
614
WisdomTree Japan Hedged Equity Fund
DXJ
$7.42B
| $3.11M | 0.01% |
27,200
-1,355
| -5% | -$148K |
|
|
FITB
615
Fifth Third Bancorp
FITB
$51.8B
| $3.1M | 0.01% |
75,416
+6,925
| +10% | +$260K |
|
616
OneSpaWorld
OSW
$2.66B
| $3.09M | 0.01% |
151,353
-20,523
| -12% | -$376K |
|
617
Schwab 5-10 Year Corporate Bond ETF
SCHI
$11.5B
| $3.08M | 0.01% |
135,174
+28,976
| +27% | +$646K |
|
618
Vanguard Short-Term Inflation-Protected Securities Index Fund
VTIP
$19.1B
| $3.07M | 0.01% |
61,059
+7,782
| +15% | +$389K |
|
619
Prudential Financial
PRU
$41.8B
| $3.07M | 0.01% |
28,554
+1,781
| +7% | +$185K |
|
620
State Street SPDR Portfolio Emerging Markets ETF
SPEM
$17.7B
| $3.04M | 0.01% |
71,210
+16,578
| +30% | +$669K |
|
621
Old Dominion Freight Line
ODFL
$44.9B
| $3.04M | 0.01% |
18,725
-347
| -2% | -$55.4K |
|
|
ZNOV
622
Innovator Equity Defined Protection ETF - 1 Yr November
ZNOV
$105M
| $3.01M | 0.01% |
116,159
-1,370
| -1% | -$34.6K |
|
623
Vanguard Consumer Staples ETF
VDC
$7.99B
| $3M | 0.01% |
13,715
+58
| +0.4% | +$12.7K |
|
624
Amplify CWP Enhanced Dividend Income ETF
DIVO
$7.81B
| $3M | 0.01% |
70,505
+1,609
| +2% | +$65.4K |
|
|
THR
625
DELISTED
Thermon Group Holdings
THR
| $2.99M | 0.01% |
106,637
-92,287
| -46% | -$2.5M |
|
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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.