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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
UCTT
1101
Ultra Clean Holdings
UCTT
$4.21B
$473K ﹤0.01%
22,100
+12,325
+126% +$394K
BKR icon
1102
Baker Hughes
BKR
$63B
$472K ﹤0.01%
10,729
+1,324
+14% +$59.1K
HBNC icon
1103
Horizon Bancorp
HBNC
$1.05B
$470K ﹤0.01%
31,200
– –
BMO icon
1104
Bank of Montreal
BMO
$129B
$467K ﹤0.01%
4,884
-3,221
-40% -$319K
SSTI icon
1105
SoundThinking
SSTI
$107M
$463K ﹤0.01%
27,328
-450
-2% -$6.66K
FBIN icon
1106
Fortune Brands Innovations
FBIN
$5.78B
$458K ﹤0.01%
7,528
-909
-11% -$61K
NJUL icon
1107
Innovator Growth-100 Power Buffer ETF July
NJUL
$262M
$458K ﹤0.01%
7,628
– –
RPG icon
1108
Invesco S&P 500 Pure Growth ETF
RPG
$2.09B
$457K ﹤0.01%
11,958
+40
+0.3% +$1.67K
EPAC icon
1109
Enerpac Tool Group
EPAC
$1.89B
$456K ﹤0.01%
10,160
– –
SR icon
1110
Spire
SR
$4.9B
$455K ﹤0.01%
5,814
-213
-4% -$15.6K
ETON icon
1111
Eton Pharmaceutcials
ETON
$1.12B
$453K ﹤0.01%
34,900
– –
CSGS
1112
DELISTED
CSG Systems International
CSGS
$452K ﹤0.01%
7,468
-1,237
-14% -$73.5K
SCHM icon
1113
Schwab US Mid-Cap ETF
SCHM
$15.3B
$451K ﹤0.01%
17,229
-238
-1% -$6.63K
SMCI icon
1114
Super Micro Computer
SMCI
$25.3B
$451K ﹤0.01%
+13,176
New +$500K
ACGL icon
1115
Arch Capital
ACGL
$33.5B
$449K ﹤0.01%
4,663
-727
-13% -$67.1K
AESI icon
1116
Atlas Energy Solutions
AESI
$1.47B
$444K ﹤0.01%
24,900
+3,200
+15% +$66.5K
PNQI icon
1117
Invesco NASDAQ Internet ETF
PNQI
$544M
$443K ﹤0.01%
10,045
– –
THW
1118
abrdn World Healthcare Fund
THW
$560M
$442K ﹤0.01%
38,300
+1,000
+3% +$11.8K
PRVA icon
1119
Privia Health
PRVA
$2.78B
$441K ﹤0.01%
19,639
– –
KEY icon
1120
KeyCorp
KEY
$24.6B
$434K ﹤0.01%
27,146
+6,495
+31% +$110K
NDEC
1121
Innovator Growth-100 Power Buffer ETF - December
NDEC
$62.5M
$434K ﹤0.01%
18,411
– –
CCL icon
1122
Carnival Corporation Ltd
CCL
$38.9B
$434K ﹤0.01%
22,217
+318
+1% +$7.56K
MDYG icon
1123
State Street SPDR S&P 400 Mid Cap Growth ETF
MDYG
$2.97B
$434K ﹤0.01%
5,460
+106
+2% +$9.12K
CALY
1124
Callaway Golf Company
CALY
$2.95B
$432K ﹤0.01%
65,595
-6,789
-9% -$49.8K
LNC icon
1125
Lincoln National
LNC
$8.67B
$430K ﹤0.01%
11,986
+1,102
+10% +$39.1K
43 44
45
46 47

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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.