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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
NSIT icon
1201
Insight Enterprises
NSIT
$4.6B
$325K ﹤0.01%
2,274
-14
-0.6% -$1.74K
CPAY icon
1202
Corpay
CPAY
$27.9B
$325K ﹤0.01%
1,540
-659
-30% -$134K
ZION icon
1203
Zions Bancorporation
ZION
$10.5B
$324K ﹤0.01%
10,827
-179
-2% -$8.19K
LBRDK icon
1204
Liberty Broadband Class C
LBRDK
$5.29B
$324K ﹤0.01%
3,966
-62
-2% -$5.35K
DTM icon
1205
DT Midstream
DTM
$13.8B
$324K ﹤0.01%
6,561
-50
-0.8% -$2.59K
MPLX icon
1206
MPLX
MPLX
$59.6B
$324K ﹤0.01%
9,400
-13,066
-58% -$449K
SSO icon
1207
ProShares Ultra S&P500
SSO
$8.51B
$321K ﹤0.01%
12,800
+10,020
+360% +$240K
QDEF icon
1208
FlexShares Quality Dividend Defensive Index Fund
QDEF
$564M
$321K ﹤0.01%
6,061
– –
NFG icon
1209
National Fuel Gas
NFG
$7.75B
$320K ﹤0.01%
5,548
+48
+0.9% +$2.78K
BDXB
1210
DELISTED
Becton, Dickinson and Company Depositary Shares, each Representing a 1/20th Interest in a Share of 6.00% Mandatory Convertible Preferred Stock, Series B
BDXB
$320K ﹤0.01%
6,438
– –
SQSP
1211
DELISTED
Squarespace, Inc.
SQSP
$318K ﹤0.01%
+10,023
New +$248K
PVH icon
1212
PVH
PVH
$3.77B
$317K ﹤0.01%
3,553
-55
-2% -$4.49K
RBLX icon
1213
Roblox
RBLX
$27.1B
$317K ﹤0.01%
+7,040
New +$269K
COUR icon
1214
Coursera
COUR
$1.53B
$316K ﹤0.01%
27,435
-3,982
-13% -$51.5K
GL icon
1215
Globe Life
GL
$14B
$316K ﹤0.01%
2,869
-11
-0.4% -$1.29K
TWI icon
1216
Titan International
TWI
$438M
$315K ﹤0.01%
30,100
– –
CNP icon
1217
CenterPoint Energy
CNP
$26.7B
$315K ﹤0.01%
10,682
-1,298
-11% -$37.9K
FCCO icon
1218
First Community Corp
FCCO
$325M
$312K ﹤0.01%
15,620
– –
WWD icon
1219
Woodward
WWD
$21.2B
$312K ﹤0.01%
3,203
-421
-12% -$42.3K
IMCG icon
1220
iShares Morningstar Mid-Cap Growth ETF
IMCG
$4.18B
$312K ﹤0.01%
5,412
+4,566
+540% +$261K
WRB icon
1221
W.R. Berkley
WRB
$26.2B
$311K ﹤0.01%
7,493
-331
-4% -$14.8K
ALLK
1222
DELISTED
Allakos
ALLK
$310K ﹤0.01%
69,717
+9,000
+15% +$57.6K
IYK icon
1223
iShares US Consumer Staples ETF
IYK
$1.43B
$308K ﹤0.01%
4,632
– –
OTEX icon
1224
Open Text
OTEX
$6.02B
$307K ﹤0.01%
7,973
– –
BBCA icon
1225
JPMorgan BetaBuilders Canada ETF
BBCA
$11.4B
$306K ﹤0.01%
5,138
-302
-6% -$18.1K
47 48
49
50 51

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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.