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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
CENTA icon
201
Central Garden & Pet Co Class A
CENTA
$2.43B
$32.8M 0.11%
1,048,076
+4,091
+0.4% +$126K
ONB icon
202
Old National Bancorp
ONB
$10.4B
$32.5M 0.11%
2,251,095
+6,290
+0.3% +$106K
ESTE
203
DELISTED
Earthstone Energy Inc. Class A Common Stock
ESTE
$32.4M 0.11%
2,490,522
+732,083
+42% +$9.82M
SP
204
DELISTED
SP Plus Corporation
SP
$32.2M 0.11%
939,139
+110,376
+13% +$3.91M
PRMW
205
DELISTED
Primo Water Corporation
PRMW
$32.2M 0.11%
2,097,036
+1,205,031
+135% +$18.4M
ELME
206
Elme Communities
ELME
$144M
$32.1M 0.11%
1,798,158
+7,090
+0.4% +$130K
UMH
207
UMH Properties
UMH
$1.39B
$32.1M 0.11%
2,170,582
+290,576
+15% +$4.77M
FCPT icon
208
Four Corners Property Trust
FCPT
$2.74B
$32.1M 0.11%
1,194,973
+3,627
+0.3% +$99.9K
PEB icon
209
Pebblebrook Hotel Trust
PEB
$2.04B
$32.1M 0.11%
2,286,076
+103,675
+5% +$1.51M
SHC icon
210
Sotera Health
SHC
$5.39B
$31.8M 0.11%
+1,775,763
New +$29.7M
WINA icon
211
Winmark
WINA
$1.24B
$31.8M 0.11%
99,156
+5,430
+6% +$1.52M
GEF icon
212
Greif
GEF
$5B
$31.3M 0.11%
494,300
+1,474
+0.3% +$98.8K
ABCB icon
213
Ameris Bancorp
ABCB
$5.94B
$31.3M 0.11%
854,471
+2,466
+0.3% +$111K
WGO icon
214
Winnebago Industries
WGO
$915M
$31M 0.11%
537,274
+2,187
+0.4% +$133K
TWST icon
215
Twist Bioscience
TWST
$7.85B
$31M 0.11%
2,054,521
+16,845
+0.8% +$372K
ROP icon
216
Roper Technologies
ROP
$39.1B
$30.7M 0.11%
69,564
-2,530
-4% -$1.09M
AAMI
217
Acadian Asset Management
AAMI
$3.27B
$30.6M 0.11%
1,298,203
+4,333
+0.3% +$102K
WSO icon
218
Watsco Inc
WSO
$12.8B
$30.6M 0.11%
96,029
-3,383
-3% -$994K
FSS icon
219
Federal Signal
FSS
$7.71B
$30.5M 0.11%
562,798
-159,536
-22% -$8.35M
WAFD icon
220
WaFd
WAFD
$2.79B
$30.4M 0.11%
1,010,865
+2,819
+0.3% +$95.3K
AEIS icon
221
Advanced Energy
AEIS
$13.5B
$30.3M 0.11%
309,260
+911
+0.3% +$85.8K
WLY icon
222
John Wiley & Sons Class A
WLY
$2.53B
$30.1M 0.11%
777,048
+3,781
+0.5% +$161K
FRME icon
223
First Merchants
FRME
$2.72B
$29.4M 0.1%
891,931
+2,067
+0.2% +$81.9K
ADC icon
224
Agree Realty
ADC
$9.25B
$29.3M 0.1%
+427,582
New +$30.5M
WNS
225
DELISTED
WNS Holdings
WNS
$29.3M 0.1%
314,445
+25,821
+9% +$2.25M
7 8
9
10 11

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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.