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William Blair & Company

William Blair & Company Portfolio holdings

AUM $38.4B
1-Year Est. Return 25.71%
This Fund
S&P 500
This Quarter Est. Return
-1.82%
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
$33.2B
AUM Growth
-$1.22B
Cap. Flow
+$11.1M
Cap. Flow %
0.03%
Top 10 Hldgs %
23.77%
Holding
1,895
New
82
Increased
626
Reduced
808
Closed
94

Top Buys

Rank Stock Value
1
META icon
Meta Platforms (Facebook)
META
+$112M
2
AAON icon
Aaon
AAON
+$104M
3
GEV icon
GE Vernova
GEV
+$77.6M
4
QCOM icon
Qualcomm
QCOM
+$47M
5
WM icon
Waste Management
WM
+$44.3M

Top Sells

Rank Stock Value
1
INTU icon
Intuit
INTU
+$65.9M
2
POOL icon
Pool Corp
POOL
+$64.7M
3
DHR icon
Danaher
DHR
+$59.8M
4
ZTS icon
Zoetis
ZTS
+$57.9M
5
SCHW
Charles Schwab
SCHW
+$44.5M

Sector Composition

Rank Sector Weight
1 Technology 26.23%
2 Financials 14.3%
3 Healthcare 12.58%
4 Industrials 12.51%
5 Consumer Discretionary 7.94%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
HASI icon
1076
Hannon Armstrong Sustainable Infrastructure Capital
HASI
$5.44B
$520K ﹤0.01%
17,772
+3,907
+28% +$111K
EPP icon
1077
iShares MSCI Pacific ex Japan ETF
EPP
$2.24B
$516K ﹤0.01%
11,691
-3,717
-24% -$167K
ALAB icon
1078
Astera Labs
ALAB
$56B
$515K ﹤0.01%
+8,625
New +$798K
RIVN icon
1079
Rivian
RIVN
$22.9B
$513K ﹤0.01%
41,167
+930
+2% +$11.7K
PPL
1080
PPL Corp
PPL
$26.8B
$508K ﹤0.01%
14,075
-151
-1% -$5.12K
FUSB icon
1081
First US Bancshares
FUSB
$90.7M
$508K ﹤0.01%
38,000
-45,000
-54% -$588K
IYK icon
1082
iShares US Consumer Staples ETF
IYK
$1.43B
$500K ﹤0.01%
6,990
+32
+0.5% +$2.17K
PAA icon
1083
Plains All American Pipeline
PAA
$16.5B
$498K ﹤0.01%
24,878
+2,913
+13% +$57.6K
MAS icon
1084
Masco
MAS
$14.7B
$497K ﹤0.01%
7,152
-3,754
-34% -$281K
ILCG icon
1085
iShares Morningstar Growth ETF
ILCG
$3.3B
$497K ﹤0.01%
6,137
+2
+0% +$177
HDB icon
1086
HDFC Bank
HDB
$119B
$494K ﹤0.01%
14,868
-3,412
-19% -$104K
NGG icon
1087
National Grid
NGG
$81.6B
$489K ﹤0.01%
7,786
-410
-5% -$24.1K
BCPC
1088
Balchem Corp
BCPC
$5.65B
$489K ﹤0.01%
+2,943
New +$483K
SEE
1089
DELISTED
Sealed Air
SEE
$486K ﹤0.01%
16,822
+8,026
+91% +$263K
IYC icon
1090
iShares US Consumer Discretionary ETF
IYC
$1.22B
$484K ﹤0.01%
5,477
-107
-2% -$10.2K
ST icon
1091
Sensata Technologies
ST
$6.61B
$484K ﹤0.01%
19,927
+958
+5% +$26.5K
CHDN icon
1092
Churchill Downs
CHDN
$6.2B
$483K ﹤0.01%
4,345
+288
+7% +$34.4K
JKHY icon
1093
Jack Henry & Associates
JKHY
$11.1B
$482K ﹤0.01%
2,639
-8,624
-77% -$1.51M
ITRN icon
1094
Ituran Location and Control
ITRN
$1.06B
$480K ﹤0.01%
13,280
+4,030
+44% +$145K
LUV icon
1095
Southwest Airlines
LUV
$22B
$480K ﹤0.01%
14,289
-5,803
-29% -$184K
MGC icon
1096
Vanguard Morningstar Mega Cap ETF
MGC
$10.4B
$478K ﹤0.01%
2,375
+45
+2% +$9.58K
INDA icon
1097
iShares MSCI India ETF
INDA
$6.58B
$478K ﹤0.01%
9,288
-110,662
-92% -$5.58M
EFAV icon
1098
iShares MSCI EAFE Min Vol Factor ETF
EFAV
$5.46B
$477K ﹤0.01%
6,125
+27
+0.4% +$2.02K
VCYT icon
1099
Veracyte
VCYT
$3.42B
$477K ﹤0.01%
16,092
+550
+4% +$21K
CPAY icon
1100
Corpay
CPAY
$27.9B
$475K ﹤0.01%
1,363
-59
-4% -$21.3K
42 43
44
45 46

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William Blair & Company's Q1 2025 Portfolio in Review

As of Q1 2025, William Blair & Company held 1,895 positions worth $33.2B, down 3.6% from $34.4B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q1 2025 filing shows 82 new, 626 increased, 808 reduced and 94 closed positions. Its largest new stake was CCC Intelligent Solutions: 320,989 shares worth $2.9M. The largest sale was Intuit, an estimated $65.9M.

By sector, the portfolio is most concentrated in Technology at 26% of assets, down from 28% a quarter earlier, followed by Financials and Healthcare.

  • William Blair & Company's largest Q1 2025 buy was CCC Intelligent Solutions: 320,989 shares worth $2.9M.
  • William Blair & Company added most to Meta Platforms (Facebook) in Q1 2025, an estimated $112M increase.
  • William Blair & Company's biggest Q1 2025 reduction was Intuit, cutting an estimated $65.9M.
  • William Blair & Company fully exited Smartsheet Inc. in Q1 2025, selling an estimated $3.52M.
  • William Blair & Company's ten largest holdings make up 24% of its $33.2B portfolio in Q1 2025.
  • William Blair & Company opened 82 new positions and closed 94 in Q1 2025.
  • William Blair & Company's portfolio value fell 3.6% quarter-over-quarter to $33.2B.

Based on William Blair & Company's 13F filing for Q1 2025, filed 9 May 2025.