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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
VTWV icon
1601
Vanguard Russell 2000 Value ETF
VTWV
$1.37B
$36.8K ﹤0.01%
305
– –
PPA icon
1602
Invesco Aerospace & Defense ETF
PPA
$8.74B
$36.6K ﹤0.01%
455
+375
+469% +$29.9K
BMVP icon
1603
Invesco Bloomberg MVP Multi-factor ETF
BMVP
$106M
$36.5K ﹤0.01%
990
– –
DTH icon
1604
WisdomTree International High Dividend Fund
DTH
$659M
$36.4K ﹤0.01%
968
– –
BMAY icon
1605
Innovator US Equity Buffer ETF May
BMAY
$237M
$36.4K ﹤0.01%
1,205
-1,204
-50% -$35.9K
FM
1606
DELISTED
iShares Frontier and Select EM ETF
FM
$36.4K ﹤0.01%
1,423
+239
+20% +$6.13K
AMWL icon
1607
American Well
AMWL
$215M
$36.3K ﹤0.01%
+770
New +$49.4K
OUST icon
1608
Ouster
OUST
$3.33B
$36.2K ﹤0.01%
4,330
– –
EWG icon
1609
iShares MSCI Germany ETF
EWG
$1.67B
$36.2K ﹤0.01%
1,272
– –
NEAR icon
1610
iShares Short Maturity Bond ETF
NEAR
$4.88B
$35.8K ﹤0.01%
721
+278
+63% +$13.8K
SPIP icon
1611
State Street SPDR Portfolio TIPS ETF
SPIP
$1.01B
$35.7K ﹤0.01%
1,340
-1,055
-44% -$27.6K
MLPA icon
1612
Global X MLP ETF
MLPA
$2.29B
$35.7K ﹤0.01%
859
+225
+35% +$9.52K
PFXF icon
1613
VanEck Preferred Securities ex Financials ETF
PFXF
$2.47B
$35.3K ﹤0.01%
2,000
– –
AVIR icon
1614
Atea Pharmaceuticals
AVIR
$405M
$35K ﹤0.01%
10,454
-4
-0% -$16
MDYG icon
1615
State Street SPDR S&P 400 Mid Cap Growth ETF
MDYG
$2.96B
$35K ﹤0.01%
511
-775
-60% -$52.9K
RNAC icon
1616
Cartesian Therapeutics
RNAC
$263M
$34.8K ﹤0.01%
834
– –
BRF icon
1617
VanEck Brazil Small-Cap ETF
BRF
$20.4M
$34.5K ﹤0.01%
2,572
– –
IDEV icon
1618
iShares Core MSCI International Developed Markets ETF
IDEV
$32.7B
$34.2K ﹤0.01%
565
+495
+707% +$29.4K
IVOO icon
1619
Vanguard S&P Mid-Cap 400 ETF
IVOO
$3.93B
$33.9K ﹤0.01%
400
– –
OUSA icon
1620
ALPS O'Shares U.S. Quality Dividend ETF
OUSA
$758M
$33.7K ﹤0.01%
800
+8
+1% +$333
SHYG icon
1621
iShares 0-5 Year High Yield Corporate Bond ETF
SHYG
$7.61B
$33.3K ﹤0.01%
800
+792
+9,900% +$32.8K
IFGL icon
1622
iShares International Developed Real Estate ETF
IFGL
$82.2M
$33.2K ﹤0.01%
1,600
– –
STPZ icon
1623
PIMCO 1-5 Year US TIPS Index Exchange-Traded Fund
STPZ
$524M
$32.9K ﹤0.01%
645
-57
-8% -$2.87K
IDU icon
1624
iShares US Utilities ETF
IDU
$1.37B
$32.7K ﹤0.01%
391
-1,210
-76% -$101K
FTSL icon
1625
First Trust Senior Loan Fund ETF
FTSL
$2.33B
$32.7K ﹤0.01%
723
-178
-20% -$8.08K
63 64
65
66 67

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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.