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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
SCHR
676
Schwab Intermediately-Term US Treasury ETF
SCHR
$13.4B
$2.33M 0.01%
93,769
+2,828
+3% +$69.2K
MAIN icon
677
Main Street Capital
MAIN
$5.53B
$2.33M 0.01%
41,172
-42
-0.1% -$2.5K
NET icon
678
Cloudflare
NET
$117B
$2.32M 0.01%
20,625
+15,726
+321% +$2.08M
CRSP icon
679
CRISPR Therapeutics
CRSP
$5.2B
$2.32M 0.01%
68,217
-46,183
-40% -$1.96M
CLBT icon
680
Cellebrite
CLBT
$2.58B
$2.31M 0.01%
118,882
-24,594
-17% -$518K
WAY
681
Waystar Holding Corp
WAY
$4.68B
$2.3M 0.01%
61,517
+1,975
+3% +$78.2K
VGIT icon
682
Vanguard Intermediate-Term Treasury ETF
VGIT
$42.5B
$2.29M 0.01%
38,530
-12,047
-24% -$705K
ENVX icon
683
Enovix
ENVX
$999M
$2.27M 0.01%
352,909
+54,260
+18% +$483K
LSTR icon
684
Landstar System
LSTR
$6.4B
$2.26M 0.01%
15,034
– –
GAIN icon
685
Gladstone Investment Corp
GAIN
$658M
$2.25M 0.01%
168,436
+6,691
+4% +$89.8K
OTIS icon
686
Otis Worldwide
OTIS
$27.9B
$2.23M 0.01%
21,649
+362
+2% +$35.4K
B
687
Barrick Mining
B
$67.1B
$2.22M 0.01%
114,163
+357
+0.3% +$6.25K
GLOB icon
688
Globant
GLOB
$1.72B
$2.22M 0.01%
18,849
-5,815
-24% -$1.04M
WTW icon
689
Willis Towers Watson
WTW
$30.9B
$2.21M 0.01%
6,549
-80
-1% -$26.1K
FSS icon
690
Federal Signal
FSS
$7.69B
$2.2M 0.01%
29,877
-7,787
-21% -$696K
NAPR icon
691
Innovator Growth-100 Power Buffer ETF April
NAPR
$213M
$2.17M 0.01%
45,577
– –
EXC icon
692
Exelon
EXC
$46.9B
$2.17M 0.01%
47,086
+4,518
+11% +$189K
ARKK icon
693
ARK Innovation ETF
ARKK
$6.49B
$2.17M 0.01%
45,522
-50,386
-53% -$2.89M
PCAR icon
694
PACCAR
PCAR
$68.7B
$2.16M 0.01%
22,170
-292
-1% -$30.8K
IMCG icon
695
iShares Morningstar Mid-Cap Growth ETF
IMCG
$4.17B
$2.16M 0.01%
30,216
+651
+2% +$49.6K
MGV icon
696
Vanguard Morningstar Mega Cap Value ETF
MGV
$13.7B
$2.15M 0.01%
16,711
-2,175
-12% -$281K
SPEM icon
697
State Street SPDR Portfolio Emerging Markets ETF
SPEM
$17.7B
$2.15M 0.01%
54,632
+16,089
+42% +$631K
TCMD icon
698
Tactile Systems Technology
TCMD
$546M
$2.15M 0.01%
162,264
-118,527
-42% -$1.86M
WTFC icon
699
Wintrust Financial
WTFC
$11B
$2.14M 0.01%
19,055
+109
+0.6% +$13.5K
VLUE icon
700
iShares MSCI USA Value Factor ETF
VLUE
$9.73B
$2.14M 0.01%
20,085
-1,109
-5% -$121K
26 27
28
29 30

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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.