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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
PRN icon
1526
Invesco Dorsey Wright Industrials Momentum ETF
PRN
$445M
$72.2K ﹤0.01%
761
– –
USHY icon
1527
iShares Broad USD High Yield Corporate Bond ETF
USHY
$29.1B
$70.9K ﹤0.01%
1,994
+398
+25% +$14K
EWX icon
1528
State Street SPDR S&P Emerging Markets Small Cap ETF
EWX
$702M
$70.7K ﹤0.01%
1,395
+175
+14% +$8.9K
ATOM icon
1529
Atomera
ATOM
$216M
$70.2K ﹤0.01%
11,025
– –
IFLN
1530
Invesco Bloomberg Enhanced Fallen Angels ETF
IFLN
$306M
$70.2K ﹤0.01%
4,008
– –
BBH icon
1531
VanEck Biotech ETF
BBH
$429M
$68.9K ﹤0.01%
425
– –
RYLD icon
1532
Global X Russell 2000 Covered Call ETF
RYLD
$1.39B
$68.8K ﹤0.01%
3,830
+150
+4% +$2.83K
PPH icon
1533
VanEck Pharmaceutical ETF
PPH
$990M
$68.5K ﹤0.01%
882
– –
SRLN icon
1534
State Street Blackstone Senior Loan ETF
SRLN
$5.37B
$67.2K ﹤0.01%
1,622
-121
-7% -$5.03K
JNK icon
1535
State Street SPDR Bloomberg High Yield Bond ETF
JNK
$7.31B
$67K ﹤0.01%
722
-110
-13% -$10.1K
FSMB icon
1536
First Trust Short Duration Managed Municipal ETF
FSMB
$627M
$65.6K ﹤0.01%
3,300
– –
FXL icon
1537
First Trust Technology AlphaDEX Fund
FXL
$2.84B
$64.7K ﹤0.01%
615
– –
OVID icon
1538
Ovid Therapeutics
OVID
$489M
$62.8K ﹤0.01%
24,328
– –
FHLC icon
1539
Fidelity MSCI Health Care Index ETF
FHLC
$3.42B
$62.6K ﹤0.01%
1,019
+109
+12% +$6.76K
JHML icon
1540
John Hancock Multifactor Large Cap ETF
JHML
$1.2B
$62.5K ﹤0.01%
1,207
– –
GENI icon
1541
Genius Sports
GENI
$2.12B
$62.5K ﹤0.01%
12,551
+1
+0% +$5
EMAN
1542
DELISTED
eMagin Corporation
EMAN
$62.4K ﹤0.01%
30,000
-10,100
-25% -$12.1K
SJNK icon
1543
State Street SPDR Bloomberg Short Term High Yield Bond ETF
SJNK
$4.8B
$62.3K ﹤0.01%
2,507
+998
+66% +$24.6K
SQQQ icon
1544
ProShares UltraPro Short QQQ
SQQQ
$1.73B
$62K ﹤0.01%
84
– –
VUZI icon
1545
Vuzix
VUZI
$218M
$61.3K ﹤0.01%
14,817
– –
PWV icon
1546
Invesco Large Cap Value ETF
PWV
$1.78B
$61.1K ﹤0.01%
1,350
+500
+59% +$23.2K
IAT icon
1547
iShares US Regional Banks ETF
IAT
$687M
$61K ﹤0.01%
1,704
+800
+88% +$37.4K
EQAL icon
1548
Invesco Russell 1000 Equal Weight ETF
EQAL
$844M
$60.8K ﹤0.01%
+1,507
New +$63K
CQQQ icon
1549
Invesco China Technology ETF
CQQQ
$3.24B
$60.3K ﹤0.01%
1,295
– –
PFIN
1550
DELISTED
P&F Industries
PFIN
$59.4K ﹤0.01%
11,000
– –
60 61
62
63 64

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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.