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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
+10.3%
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
$25B
AUM Growth
+$2.04B
Cap. Flow
+$116M
Cap. Flow %
0.46%
Top 10 Hldgs %
23.68%
Holding
1,879
New
69
Increased
680
Reduced
748
Closed
78

Top Buys

Rank Stock Value
1
NEOG icon
Neogen
NEOG
+$45.2M
2
PGR icon
Progressive
PGR
+$34.8M
3
TOST icon
Toast
TOST
+$33.8M
4
PWSC
PowerSchool Holdings, Inc.
PWSC
+$33.4M
5
UBER icon
Uber
UBER
+$30.4M

Top Sells

Rank Stock Value
1
GOOG icon
Alphabet (Google) Class C
GOOG
+$54.2M
2
LULU icon
lululemon athletica
LULU
+$53.4M
3
PYPL icon
PayPal
PYPL
+$45.8M
4
BAH icon
Booz Allen Hamilton
BAH
+$20.2M
5
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$17.8M

Sector Composition

Rank Sector Weight
1 Technology 24.61%
2 Healthcare 19.42%
3 Financials 11.75%
4 Industrials 11.37%
5 Consumer Discretionary 8.4%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
CGGR icon
751
Capital Group Growth ETF
CGGR
$25.3B
$1.35M 0.01%
60,000
+20,140
+51% +$437K
HPQ icon
752
HP
HPQ
$28.6B
$1.35M 0.01%
45,829
-1,530
-3% -$43.9K
TLT icon
753
iShares 20+ Year Treasury Bond ETF
TLT
$40.8B
$1.34M 0.01%
12,604
+2,125
+20% +$222K
GSK icon
754
GSK
GSK
$101B
$1.33M 0.01%
37,350
+1,871
+5% +$65.5K
X
755
DELISTED
US Steel
X
$1.32M 0.01%
50,634
-3,750
-7% -$104K
EXC icon
756
Exelon
EXC
$47B
$1.32M 0.01%
31,408
-907
-3% -$37.8K
LEG icon
757
Leggett & Platt
LEG
$1.32B
$1.31M 0.01%
41,205
+655
+2% +$22K
VTHR icon
758
Vanguard Russell 3000 ETF
VTHR
$4.89B
$1.3M 0.01%
7,113
-5,288
-43% -$950K
IEF icon
759
iShares 7-10 Year Treasury Bond ETF
IEF
$47.3B
$1.3M 0.01%
13,119
+3,911
+42% +$382K
BLDR icon
760
Builders FirstSource
BLDR
$7.91B
$1.3M 0.01%
14,639
-784
-5% -$62.1K
SCHF icon
761
Schwab International Equity ETF
SCHF
$69.3B
$1.3M 0.01%
74,658
+15,722
+27% +$269K
IQV icon
762
IQVIA
IQV
$39.8B
$1.3M 0.01%
6,520
-1,420
-18% -$304K
EWJ icon
763
iShares MSCI Japan ETF
EWJ
$23.2B
$1.3M 0.01%
22,071
+3,035
+16% +$173K
XIFR
764
XPLR Infrastructure LP
XIFR
$1.09B
$1.29M 0.01%
21,289
-2,333
-10% -$160K
CHTR icon
765
Charter Communications
CHTR
$18.7B
$1.29M 0.01%
3,614
-5,296
-59% -$1.98M
AIRC
766
DELISTED
Apartment Income REIT Corp.
AIRC
$1.29M 0.01%
36,085
+3
+0% +$110
MOS icon
767
The Mosaic Company
MOS
$6.92B
$1.29M 0.01%
28,154
+376
+1% +$18.2K
ENTG icon
768
Entegris
ENTG
$25B
$1.29M 0.01%
15,745
+35
+0.2% +$2.84K
HYMB icon
769
State Street SPDR Nuveen ICE High Yield Municipal Bond ETF
HYMB
$3.37B
$1.29M 0.01%
51,530
+3,260
+7% +$81.5K
SOVO
770
DELISTED
Sovos Brands, Inc. Common Stock
SOVO
$1.29M 0.01%
77,269
+2,219
+3% +$31.2K
PLUG icon
771
Plug Power
PLUG
$3.21B
$1.28M 0.01%
109,319
-4,920
-4% -$70.3K
MORN icon
772
Morningstar
MORN
$7.76B
$1.26M 0.01%
6,210
-361
-5% -$79.4K
JMST icon
773
JPMorgan Ultra-Short Municipal Income ETF
JMST
$7.15B
$1.26M 0.01%
24,800
+1,000
+4% +$50.6K
EWC icon
774
iShares MSCI Canada ETF
EWC
$6.55B
$1.25M 0.01%
36,652
+723
+2% +$24.8K
CIEN icon
775
Ciena
CIEN
$62.7B
$1.25M 0.01%
23,817
-208
-0.9% -$10.4K
29 30
31
32 33

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William Blair & Company's Q1 2023 Portfolio in Review

As of Q1 2023, William Blair & Company held 1,879 positions worth $25B, up 8.9% from $23B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q1 2023 filing shows 69 new, 680 increased, 748 reduced and 78 closed positions. Its largest new stake was Neogen: 2,404,277 shares worth $44.5M. The largest sale was Alphabet (Google) Class C, an estimated $54.2M.

By sector, the portfolio is most concentrated in Technology at 25% of assets, up from 22% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q1 2023 buy was Neogen: 2,404,277 shares worth $44.5M.
  • William Blair & Company added most to Progressive in Q1 2023, an estimated $34.8M increase.
  • William Blair & Company's biggest Q1 2023 reduction was Alphabet (Google) Class C, cutting an estimated $54.2M.
  • William Blair & Company fully exited Coupa Software Incorporated in Q1 2023, selling an estimated $2.65M.
  • William Blair & Company's ten largest holdings make up 24% of its $25B portfolio in Q1 2023.
  • William Blair & Company opened 69 new positions and closed 78 in Q1 2023.
  • William Blair & Company's portfolio value rose 8.9% quarter-over-quarter to $25B.

Based on William Blair & Company's 13F filing for Q1 2023, filed 12 May 2023.