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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
MAIN icon
676
Main Street Capital
MAIN
$5.53B
$1.8M 0.01%
45,634
– –
VKTX icon
677
Viking Therapeutics
VKTX
$3.87B
$1.8M 0.01%
107,945
+74,788
+226% +$773K
RKLB icon
678
Rocket Lab Corp
RKLB
$51.6B
$1.79M 0.01%
444,244
+18,773
+4% +$84.3K
SNA icon
679
Snap-on
SNA
$20.9B
$1.78M 0.01%
7,200
-1,205
-14% -$294K
IDV icon
680
iShares International Select Dividend ETF
IDV
$8.53B
$1.78M 0.01%
64,655
+7,646
+13% +$215K
CALY
681
Callaway Golf Company
CALY
$2.98B
$1.78M 0.01%
82,190
+1,000
+1% +$22.7K
VGK icon
682
Vanguard FTSE Europe ETF
VGK
$31B
$1.77M 0.01%
29,105
-68,903
-70% -$4.12M
HTGC icon
683
Hercules Capital
HTGC
$3.15B
$1.77M 0.01%
137,379
-963
-0.7% -$13.5K
RTO icon
684
Rentokil
RTO
$12.1B
$1.76M 0.01%
48,301
-14,499
-23% -$458K
RDFN
685
DELISTED
Redfin
RDFN
$1.76M 0.01%
194,040
+26,753
+16% +$199K
AVB icon
686
AvalonBay Communities
AVB
$26.3B
$1.76M 0.01%
10,451
+236
+2% +$40.3K
BAX icon
687
Baxter International
BAX
$14B
$1.75M 0.01%
43,097
-7,650
-15% -$324K
XAR icon
688
State Street SPDR S&P Aerospace & Defense ETF
XAR
$6.62B
$1.74M 0.01%
14,881
+5
+0% +$581
KEYS icon
689
Keysight
KEYS
$60.6B
$1.73M 0.01%
10,722
+746
+7% +$127K
K
690
DELISTED
Kellanova
K
$1.73M 0.01%
27,480
+4,544
+20% +$287K
IZRL icon
691
ARK Israel Innovative Technology ETF
IZRL
$141M
$1.7M 0.01%
97,490
– –
INSP icon
692
Inspire Medical Systems
INSP
$1.68B
$1.69M 0.01%
7,203
+21
+0.3% +$5.31K
RIG icon
693
Transocean
RIG
$6.36B
$1.68M 0.01%
264,926
-5,060
-2% -$32.5K
JEPI icon
694
JPMorgan Equity Premium Income ETF
JEPI
$46.2B
$1.67M 0.01%
30,656
+15,504
+102% +$841K
DBEF icon
695
Xtrackers MSCI EAFE Hedged Equity ETF
DBEF
$9.46B
$1.66M 0.01%
47,251
+23,288
+97% +$802K
RSI icon
696
Rush Street Interactive
RSI
$2.87B
$1.66M 0.01%
533,712
+950
+0.2% +$3.65K
MGM icon
697
MGM Resorts International
MGM
$11.1B
$1.65M 0.01%
37,250
-798
-2% -$33.2K
SPYG icon
698
State Street SPDR Portfolio S&P 500 Growth ETF
SPYG
$55.5B
$1.65M 0.01%
29,785
-1,002
-3% -$53.1K
HBAN icon
699
Huntington Bancshares
HBAN
$36.2B
$1.63M 0.01%
145,978
-12,240
-8% -$170K
PARA
700
DELISTED
Paramount Global Class B
PARA
$1.63M 0.01%
55,661
-3,369
-6% -$72.3K
26 27
28
29 30

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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.