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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
BILL icon
301
BILL Holdings
BILL
$4.78B
$13.6M 0.04%
294,573
+96,279
+49% +$4.26M
PYPL icon
302
PayPal
PYPL
$50.5B
$13.3M 0.04%
178,945
-5,450
-3% -$373K
FROG icon
303
JFrog
FROG
$10.8B
$13.3M 0.04%
302,145
+4,711
+2% +$179K
APPF icon
304
AppFolio
APPF
$7.04B
$13M 0.04%
56,337
-156
-0.3% -$34K
MCO icon
305
Moody's
MCO
$82.7B
$12.9M 0.04%
25,805
-17,940
-41% -$8.31M
LNG icon
306
Cheniere Energy
LNG
$52.9B
$12.8M 0.04%
52,525
+1,779
+4% +$412K
VLTO icon
307
Veralto
VLTO
$24B
$12.8M 0.04%
126,391
-2,310
-2% -$223K
BSX icon
308
Boston Scientific
BSX
$71.5B
$12.8M 0.04%
118,768
+826
+0.7% +$83.6K
IWR icon
309
iShares Russell Mid-Cap ETF
IWR
$57.4B
$12.6M 0.04%
137,031
-5,404
-4% -$467K
KFY icon
310
Korn Ferry
KFY
$4.28B
$12.5M 0.03%
170,831
+39,029
+30% +$2.6M
EOG icon
311
EOG Resources
EOG
$70.7B
$12.4M 0.03%
104,074
+4,535
+5% +$518K
OKE icon
312
Oneok
OKE
$54.5B
$12.4M 0.03%
152,024
+6,636
+5% +$553K
UPS icon
313
United Parcel Service
UPS
$88.9B
$12.3M 0.03%
121,438
-59,852
-33% -$5.89M
IRT icon
314
Independence Realty Trust
IRT
$4.07B
$12.2M 0.03%
688,985
+3,546
+0.5% +$66.5K
CVNA icon
315
Carvana
CVNA
$77.9B
$12.2M 0.03%
180,840
-43,115
-19% -$2.36M
AGG icon
316
iShares Core US Aggregate Bond ETF
AGG
$138B
$12.1M 0.03%
122,455
+1,163
+1% +$114K
TRMB icon
317
Trimble
TRMB
$13.9B
$12.1M 0.03%
159,576
-8,355
-5% -$561K
EXEL icon
318
Exelixis
EXEL
$13.4B
$12.1M 0.03%
274,580
-18,091
-6% -$723K
XLE icon
319
State Street Energy Select Sector SPDR ETF
XLE
$37.7B
$12.1M 0.03%
285,272
-12,964
-4% -$540K
JEPI icon
320
JPMorgan Equity Premium Income ETF
JEPI
$45.9B
$12.1M 0.03%
212,699
+44,493
+26% +$2.46M
CARR icon
321
Carrier Global
CARR
$52.8B
$12.1M 0.03%
164,862
+9,341
+6% +$634K
YETI icon
322
Yeti Holdings
YETI
$3.95B
$11.9M 0.03%
378,858
-6,142
-2% -$184K
NKE icon
323
Nike
NKE
$61.9B
$11.6M 0.03%
163,439
-35,621
-18% -$2.14M
VRTX icon
324
Vertex Pharmaceuticals
VRTX
$126B
$11.6M 0.03%
26,077
-768
-3% -$354K
MKC icon
325
McCormick & Company Non-Voting
MKC
$14.2B
$11.6M 0.03%
152,415
-6,877
-4% -$515K
11 12
13
14 15

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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.