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William Blair Investment Management

William Blair Investment Management Portfolio holdings

AUM $33.3B
1-Year Est. Return 44.76%
This Fund
S&P 500
This Quarter Est. Return
+11.26%
1 Year Est. Return
+44.76%
3 Year Est. Return
+140.8%
5 Year Est. Return
+166.51%
10 Year Est. Return
+978.6%
AUM
$28.7B
AUM Growth
+$2.56B
Cap. Flow
+$530M
Cap. Flow %
1.85%
Top 10 Hldgs %
19.55%
Holding
425
New
24
Increased
254
Reduced
112
Closed
32

Top Buys

Rank Stock Value
1
RACE icon
Ferrari
RACE
+$191M
2
TSM icon
TSMC
TSM
+$128M
3
KOS icon
Kosmos Energy
KOS
+$111M
4
FIVE icon
Five Below
FIVE
+$111M
5
AMD icon
Advanced Micro Devices
AMD
+$86.5M

Top Sells

Rank Stock Value
1
HALO icon
Halozyme
HALO
+$211M
2
SYK icon
Stryker
SYK
+$153M
3
WH icon
Wyndham Hotels & Resorts
WH
+$113M
4
FTI icon
TechnipFMC
FTI
+$92.8M
5
AZTA icon
Azenta
AZTA
+$78.7M

Sector Composition

Rank Sector Weight
1 Technology 25.27%
2 Industrials 16.92%
3 Consumer Discretionary 15.22%
4 Healthcare 14.65%
5 Financials 9.04%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
APO icon
76
Apollo Global Management
APO
$82B
$129M 0.45%
2,047,496
-831,614
-29% -$55.7M
LECO icon
77
Lincoln Electric
LECO
$15.6B
$129M 0.45%
764,562
-52,603
-6% -$8.67M
ALRM icon
78
Alarm.com
ALRM
$2.73B
$127M 0.44%
2,532,256
+44,902
+2% +$2.31M
TREX icon
79
Trex
TREX
$5.03B
$127M 0.44%
2,610,983
-253,218
-9% -$12.8M
VRNS icon
80
Varonis Systems
VRNS
$4.82B
$123M 0.43%
4,726,462
-1,455,276
-24% -$37.9M
CF icon
81
CF Industries
CF
$18.2B
$120M 0.42%
1,659,399
+119,023
+8% +$9.73M
CNI icon
82
Canadian National Railway
CNI
$76.3B
$118M 0.41%
1,001,661
+56,286
+6% +$6.65M
ORLY icon
83
O'Reilly Automotive
ORLY
$74.4B
$117M 0.41%
2,065,695
+604,200
+41% +$33.1M
VIRT icon
84
Virtu Financial
VIRT
$5.02B
$116M 0.41%
6,153,430
-2,049,614
-25% -$39.4M
FIVE icon
85
Five Below
FIVE
$13.2B
$116M 0.4%
+563,507
New +$111M
CGNX icon
86
Cognex
CGNX
$10.2B
$114M 0.4%
2,306,956
+26,930
+1% +$1.36M
ADBE icon
87
Adobe
ADBE
$103B
$114M 0.4%
296,026
+10,136
+4% +$3.6M
KOS icon
88
Kosmos Energy
KOS
$1.5B
$113M 0.39%
+15,220,097
New +$111M
WSC icon
89
WillScot Mobile Mini Holdings
WSC
$4.02B
$112M 0.39%
2,397,193
-59,912
-2% -$2.88M
ISRG icon
90
Intuitive Surgical
ISRG
$142B
$112M 0.39%
436,752
+113,858
+35% +$28M
AMBA icon
91
Ambarella
AMBA
$3.68B
$109M 0.38%
1,413,763
+25,957
+2% +$2.22M
WOLF icon
92
Wolfspeed
WOLF
$1.66B
$106M 0.37%
1,633,371
+624,528
+62% +$45.6M
GMED icon
93
Globus Medical
GMED
$11.5B
$106M 0.37%
1,863,312
-454,473
-20% -$29.1M
ARES icon
94
Ares Management
ARES
$32B
$105M 0.37%
1,264,280
-534,318
-30% -$42.5M
BAP icon
95
Credicorp
BAP
$29.7B
$105M 0.37%
795,431
+12,807
+2% +$1.72M
NFE icon
96
New Fortress Energy
NFE
$92.9M
$99.2M 0.35%
3,371,519
+30,098
+0.9% +$1.06M
MAR icon
97
Marriott International
MAR
$92.5B
$99M 0.35%
596,540
-58,920
-9% -$9.81M
P
98
Everpure Inc
P
$37.2B
$92.7M 0.32%
3,634,090
-1,092,640
-23% -$29.5M
G icon
99
Genpact
G
$5.7B
$92.6M 0.32%
2,004,108
-22,015
-1% -$1.03M
WH icon
100
Wyndham Hotels & Resorts
WH
$5.49B
$92M 0.32%
1,355,277
-1,535,471
-53% -$113M
2 3
4
5 6

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William Blair Investment Management's Q1 2023 Portfolio in Review

As of Q1 2023, William Blair Investment Management held 425 positions worth $28.7B, up 9.8% from $26.1B the previous quarter. Its ten largest holdings account for 20% of the portfolio.

William Blair Investment Management's Q1 2023 filing shows 24 new, 254 increased, 112 reduced and 32 closed positions. Its largest new stake was Ferrari: 749,761 shares worth $203M. The largest sale was Halozyme, an estimated $211M.

By sector, the portfolio is most concentrated in Technology at 25% of assets, up from 23% a quarter earlier, followed by Industrials and Consumer Discretionary.

  • William Blair Investment Management's largest Q1 2023 buy was Ferrari: 749,761 shares worth $203M.
  • William Blair Investment Management added most to TSMC in Q1 2023, an estimated $128M increase.
  • William Blair Investment Management's biggest Q1 2023 reduction was Wyndham Hotels & Resorts, cutting an estimated $113M.
  • William Blair Investment Management fully exited Halozyme in Q1 2023, selling an estimated $211M.
  • William Blair Investment Management's ten largest holdings make up 20% of its $28.7B portfolio in Q1 2023.
  • William Blair Investment Management opened 24 new positions and closed 32 in Q1 2023.
  • William Blair Investment Management's portfolio value rose 9.8% quarter-over-quarter to $28.7B.

Based on William Blair Investment Management's 13F filing for Q1 2023, filed 12 May 2023.