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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
IWY icon
576
iShares Russell Top 200 Growth ETF
IWY
$16.7B
$3.49M 0.01%
16,524
+936
+6% +$215K
BXSL icon
577
Blackstone Secured Lending
BXSL
$5.77B
$3.48M 0.01%
107,466
+48,917
+84% +$1.61M
CFLT
578
DELISTED
Confluent
CFLT
$3.47M 0.01%
147,921
+117,236
+382% +$3.4M
SUB icon
579
iShares Short-Term National Muni Bond ETF
SUB
$11.4B
$3.47M 0.01%
32,814
-4,140
-11% -$438K
III icon
580
Information Services Group
III
$242M
$3.45M 0.01%
881,294
+54,056
+7% +$177K
SPG icon
581
Simon Property Group
SPG
$71.9B
$3.43M 0.01%
20,628
-560
-3% -$97.9K
NVO
582
Novo Nordisk
NVO
$201B
$3.4M 0.01%
49,019
-14,954
-23% -$1.24M
DVN icon
583
Devon Energy
DVN
$48.6B
$3.36M 0.01%
89,885
-45,986
-34% -$1.63M
RKLB icon
584
Rocket Lab Corp
RKLB
$51.6B
$3.36M 0.01%
187,973
+270
+0.1% +$6.47K
PHM icon
585
Pultegroup
PHM
$24.8B
$3.32M 0.01%
32,300
-1,857
-5% -$201K
BDEC icon
586
Innovator US Equity Buffer ETF December
BDEC
$223M
$3.29M 0.01%
78,690
-774
-1% -$33.5K
MRCC
587
DELISTED
Monroe Capital Corp
MRCC
$3.29M 0.01%
421,503
-6,684
-2% -$55.7K
AYI icon
588
Acuity Brands
AYI
$10.7B
$3.28M 0.01%
12,471
+11,158
+850% +$3.37M
VTEB icon
589
Vanguard Tax-Exempt Bond Index Fund
VTEB
$46.1B
$3.27M 0.01%
66,001
-10,669
-14% -$534K
LFUS icon
590
Littelfuse
LFUS
$11.6B
$3.27M 0.01%
16,641
-1,289
-7% -$295K
WAL icon
591
Western Alliance Bancorporation
WAL
$8.95B
$3.26M 0.01%
42,426
-9,838
-19% -$826K
PRI icon
592
Primerica
PRI
$9.58B
$3.25M 0.01%
11,418
-1,199
-10% -$342K
STVN icon
593
Stevanato
STVN
$5.82B
$3.25M 0.01%
159,032
+137,625
+643% +$2.93M
ROKU icon
594
Roku
ROKU
$22.7B
$3.22M 0.01%
45,727
+5,869
+15% +$470K
BFEB icon
595
Innovator US Equity Buffer ETF February
BFEB
$259M
$3.22M 0.01%
77,496
+3,517
+5% +$151K
ACHR icon
596
Archer Aviation
ACHR
$5.07B
$3.21M 0.01%
451,284
-5,023
-1% -$44.6K
SCHF icon
597
Schwab International Equity ETF
SCHF
$69.3B
$3.2M 0.01%
161,824
-10,016
-6% -$196K
PHR icon
598
Phreesia
PHR
$760M
$3.18M 0.01%
124,406
-21,044
-14% -$572K
HHS icon
599
Harte-Hanks
HHS
$21M
$3.17M 0.01%
660,845
– –
KAPR icon
600
Innovator US Small Cap Power Buffer ETF April
KAPR
$219M
$3.17M 0.01%
102,631
-1,004
-1% -$32.4K
22 23
24
25 26

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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.