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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
IGLB icon
1626
iShares 10+ Year Investment Grade Corporate Bond ETF
IGLB
$2.78B
$32.2K ﹤0.01%
642
+567
+756% +$28.3K
UAA icon
1627
Under Armour
UAA
$2.26B
$32.1K ﹤0.01%
5,141
-14,715
-74% -$110K
SCHZ icon
1628
Schwab US Aggregate Bond ETF
SCHZ
$10.5B
$32.1K ﹤0.01%
1,384
+170
+14% +$3.89K
JPEF icon
1629
JPMorgan Equity Focus ETF
JPEF
$2.06B
$31.8K ﹤0.01%
500
– –
JNK icon
1630
State Street SPDR Bloomberg High Yield Bond ETF
JNK
$7.31B
$31.4K ﹤0.01%
329
-85
-21% -$8.18K
CSD icon
1631
Invesco S&P Spin-Off ETF
CSD
$232M
$30.8K ﹤0.01%
410
– –
IBDT icon
1632
iShares iBonds Dec 2028 Term Corporate ETF
IBDT
$4.07B
$30.5K ﹤0.01%
1,207
– –
HYS icon
1633
PIMCO 0-5 Year High Yield Corporate Bond Index Exchange-Traded Fund
HYS
$1.77B
$30.3K ﹤0.01%
324
– –
CNYA icon
1634
iShares MSCI China A ETF
CNYA
$208M
$30.1K ﹤0.01%
1,073
– –
XPH icon
1635
State Street SPDR S&P Pharmaceuticals ETF
XPH
$510M
$30.1K ﹤0.01%
+686
New +$30.3K
EEMS icon
1636
iShares MSCI Emerging Markets Small-Cap ETF
EEMS
$379M
$27.8K ﹤0.01%
500
– –
CBUS icon
1637
Cibus
CBUS
$144M
$27.5K ﹤0.01%
+14,709
New +$34.5K
FCG icon
1638
First Trust Natural Gas ETF
FCG
$645M
$26.1K ﹤0.01%
1,050
+1,000
+2,000% +$25K
PBE icon
1639
Invesco Biotechnology & Genome ETF
PBE
$358M
$25.4K ﹤0.01%
400
– –
FCOM icon
1640
Fidelity MSCI Communication Services Index ETF
FCOM
$1.76B
$25.2K ﹤0.01%
448
+224
+100% +$13.5K
VTWG icon
1641
Vanguard Russell 2000 Growth ETF
VTWG
$1.56B
$25.2K ﹤0.01%
135
-120
-47% -$24.7K
OUSA icon
1642
ALPS O'Shares U.S. Quality Dividend ETF
OUSA
$758M
$24.9K ﹤0.01%
467
+1
+0.2% +$54
FDIQ
1643
Invesco Bloomberg Financial Data Providers ETF
FDIQ
$48.1M
$24.8K ﹤0.01%
441
-1,502
-77% -$90.1K
MXI icon
1644
iShares Global Materials ETF
MXI
$361M
$24.5K ﹤0.01%
+300
New +$24.6K
IRD
1645
Opus Genetics
IRD
$313M
$24K ﹤0.01%
24,466
-8,801
-26% -$9.83K
GEF.B icon
1646
Greif Class B
GEF.B
$4.24B
$23.7K ﹤0.01%
400
– –
IXG icon
1647
iShares Global Financials ETF
IXG
$698M
$23.7K ﹤0.01%
230
– –
ERTH icon
1648
Invesco MSCI Sustainable Future ETF
ERTH
$138M
$23.3K ﹤0.01%
+600
New +$24.2K
OXY.WS icon
1649
Occidental Petroleum Corp Warrants
OXY.WS
$34.4B
$22.6K ﹤0.01%
818
-627
-43% -$17K
VGLT icon
1650
Vanguard Long-Term Treasury ETF
VGLT
$10.3B
$22K ﹤0.01%
382
-196
-34% -$11K
64 65
66
67 68

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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.