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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
WOLF icon
1601
Wolfspeed
WOLF
$1.65B
$42.9K ﹤0.01%
14,022
-33,560
-71% -$196K
AVPTW
1602
DELISTED
AvePoint Inc Warrant
AVPTW
$42.2K ﹤0.01%
10,000
– –
RNTX
1603
Rein Therapeutics
RNTX
$68.9M
$41.8K ﹤0.01%
23,622
-1,980
-8% -$4.16K
JETS icon
1604
US Global Jets ETF
JETS
$825M
$41.2K ﹤0.01%
1,986
-300
-13% -$7.35K
EQWL icon
1605
Invesco S&P 100 Equal Weight ETF
EQWL
$2.79B
$41.2K ﹤0.01%
400
– –
FINX icon
1606
Global X FinTech ETF
FINX
$166M
$40.6K ﹤0.01%
1,474
– –
IBTF
1607
DELISTED
iShares iBonds Dec 2025 Term Treasury ETF
IBTF
$40.4K ﹤0.01%
1,729
+576
+50% +$13.4K
HTZ icon
1608
Hertz
HTZ
$998M
$39.5K ﹤0.01%
10,032
– –
LCID icon
1609
Lucid Motors
LCID
$2.58B
$38.8K ﹤0.01%
1,604
+538
+50% +$14.4K
KBE icon
1610
State Street SPDR S&P Bank ETF
KBE
$1.74B
$37.8K ﹤0.01%
714
+100
+16% +$5.6K
BALT icon
1611
Innovator Defined Wealth Shield ETF
BALT
$2.8B
$37.7K ﹤0.01%
1,200
– –
RWX icon
1612
State Street SPDR Dow Jones International Real Estate ETF
RWX
$267M
$36.2K ﹤0.01%
1,479
– –
PSQ icon
1613
ProShares Short QQQ
PSQ
$642M
$36.1K ﹤0.01%
888
– –
EWG icon
1614
iShares MSCI Germany ETF
EWG
$1.67B
$36K ﹤0.01%
972
-76
-7% -$2.71K
BELFA icon
1615
Bel Fuse Inc Class A
BELFA
$3.43B
$36K ﹤0.01%
500
– –
SPHY icon
1616
State Street SPDR Portfolio High Yield Bond ETF
SPHY
$12B
$35.3K ﹤0.01%
1,509
-491
-25% -$11.6K
FNOV icon
1617
FT Vest US Equity Buffer ETF November
FNOV
$1.24B
$35K ﹤0.01%
750
– –
STPZ icon
1618
PIMCO 1-5 Year US TIPS Index Exchange-Traded Fund
STPZ
$524M
$34.8K ﹤0.01%
645
– –
DFJ icon
1619
WisdomTree Japan SmallCap Dividend Fund
DFJ
$402M
$34.7K ﹤0.01%
438
– –
SMOG icon
1620
VanEck Low Carbon Energy ETF
SMOG
$136M
$33.8K ﹤0.01%
334
– –
BA.PRA
1621
Boeing Co 6.00% Series A Preferred Stock
BA.PRA
$8.19B
$33.6K ﹤0.01%
562
– –
PFXF icon
1622
VanEck Preferred Securities ex Financials ETF
PFXF
$2.47B
$33.5K ﹤0.01%
2,000
-1,077
-35% -$18.6K
AWRE icon
1623
Aware
AWRE
$26M
$33.1K ﹤0.01%
20,964
-1,000
-5% -$1.62K
DES icon
1624
WisdomTree US SmallCap Dividend Fund
DES
$2.22B
$33K ﹤0.01%
1,034
– –
RWR icon
1625
State Street SPDR Dow Jones REIT ETF
RWR
$1.87B
$32.7K ﹤0.01%
330
+5
+2% +$499
63 64
65
66 67

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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.