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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
SCWO icon
1576
374Water
SCWO
$41.1M
$47.2K ﹤0.01%
1,000
– –
CTXR icon
1577
Citius Pharmaceuticals
CTXR
$21M
$47.1K ﹤0.01%
1,611
– –
DNA icon
1578
Ginkgo Bioworks
DNA
$486M
$46.1K ﹤0.01%
867
– –
RSPF icon
1579
Invesco S&P 500 Equal Weight Financials ETF
RSPF
$309M
$45.4K ﹤0.01%
900
-100
-10% -$5.71K
EWJV icon
1580
iShares MSCI Japan Value ETF
EWJV
$754M
$45K ﹤0.01%
1,750
– –
EWZ icon
1581
iShares MSCI Brazil ETF
EWZ
$8.57B
$44.3K ﹤0.01%
1,618
– –
SPAB icon
1582
State Street SPDR Portfolio Aggregate Bond ETF
SPAB
$9.93B
$44.1K ﹤0.01%
1,710
-511
-23% -$13.1K
JETS icon
1583
US Global Jets ETF
JETS
$825M
$43.8K ﹤0.01%
+2,349
New +$45.4K
ITEQ icon
1584
Amplify BlueStar Israel Technology ETF
ITEQ
$118M
$41.5K ﹤0.01%
900
– –
COPX icon
1585
Global X Copper Miners ETF NEW
COPX
$8.22B
$40.3K ﹤0.01%
1,041
– –
AWRE icon
1586
Aware
AWRE
$26M
$40.2K ﹤0.01%
23,664
– –
PID icon
1587
Invesco International Dividend Achievers ETF
PID
$912M
$40.1K ﹤0.01%
2,250
-750
-25% -$13.1K
RNTX
1588
Rein Therapeutics
RNTX
$68.9M
$39.9K ﹤0.01%
32,217
-35,650
-53% -$76.4K
SMOG icon
1589
VanEck Low Carbon Energy ETF
SMOG
$136M
$39.3K ﹤0.01%
324
– –
HTZWW
1590
Hertz Global Holdings Warrants
HTZWW
$112M
$39.1K ﹤0.01%
4,404
– –
IHF icon
1591
iShares US Healthcare Providers ETF
IHF
$1.27B
$39.1K ﹤0.01%
790
– –
NEPH icon
1592
Nephros
NEPH
$47.4M
$38.8K ﹤0.01%
36,249
– –
EZM icon
1593
WisdomTree US MidCap Fund
EZM
$957M
$38.1K ﹤0.01%
765
– –
CS
1594
DELISTED
Credit Suisse Group
CS
$37.7K ﹤0.01%
42,415
+20,000
+89% +$55.8K
SPYX icon
1595
State Street SPDR S&P 500 Fossil Fuel Reserves Free ETF
SPYX
$2.87B
$37.5K ﹤0.01%
1,128
– –
SPXL icon
1596
Direxion Daily S&P 500 Bull 3x ETF
SPXL
$7.27B
$37.2K ﹤0.01%
508
-10
-2% -$691
OTLY
1597
Oatly Group
OTLY
$420M
$37.1K ﹤0.01%
768
+2
+0.3% +$93
PKW icon
1598
Invesco BuyBack Achievers ETF
PKW
$1.78B
$37K ﹤0.01%
435
– –
FPX icon
1599
First Trust US Equity Opportunities ETF
FPX
$1.53B
$37K ﹤0.01%
440
-5
-1% -$414
IBDP
1600
DELISTED
iShares iBonds Dec 2024 Term Corporate ETF
IBDP
$36.9K ﹤0.01%
1,500
– –
62 63
64
65 66

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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.