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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
ENPH icon
301
Enphase Energy
ENPH
$5.39B
$13.9M 0.05%
66,329
-2,058
-3% -$446K
ACH
302
Accendra Health
ACH
$93.1M
$13.9M 0.05%
955,228
-2,161,357
-69% -$38.7M
CVCO icon
303
Cavco Industries
CVCO
$4.6B
$13.9M 0.05%
+43,604
New +$12.1M
VCYT icon
304
Veracyte
VCYT
$3.59B
$13.5M 0.05%
605,808
+47,424
+8% +$1.15M
AVTR icon
305
Avantor
AVTR
$9.42B
$13M 0.05%
+615,213
New +$14M
NVDA icon
306
NVIDIA
NVDA
$5.43T
$12.4M 0.04%
446,320
-14,900
-3% -$322K
ADT icon
307
ADT
ADT
$5.34B
$12.1M 0.04%
1,680,454
+222,041
+15% +$1.81M
FROG icon
308
JFrog
FROG
$10.4B
$11.5M 0.04%
583,828
+46,234
+9% +$1.03M
SMIN icon
309
iShares MSCI India Small-Cap ETF
SMIN
$771M
$11.4M 0.04%
228,262
– –
LGND icon
310
Ligand Pharmaceuticals
LGND
$5.85B
$11.2M 0.04%
152,754
+11,626
+8% +$826K
VINP icon
311
Vinci Compass Investments Ltd
VINP
$627M
$11.1M 0.04%
1,363,197
+50,840
+4% +$473K
TNC icon
312
Tennant Co
TNC
$1.18B
$11M 0.04%
160,014
+955
+0.6% +$64.7K
BBBY
313
Bed Bath & Beyond
BBBY
$403M
$10.9M 0.04%
591,010
+30,283
+5% +$565K
AZTA icon
314
Azenta
AZTA
$1.47B
$10.7M 0.04%
238,905
-1,588,513
-87% -$78.7M
AMBP icon
315
Ardagh Metal Packaging
AMBP
$3.02B
$10.2M 0.04%
2,487,809
+200,916
+9% +$987K
OABI icon
316
OmniAb
OABI
$497M
$10.1M 0.04%
2,748,869
+223,252
+9% +$843K
CGNT icon
317
Cognyte Software
CGNT
$675M
$10.1M 0.04%
2,978,976
+21,857
+0.7% +$78.7K
ABT icon
318
Abbott
ABT
$192B
$9.59M 0.03%
94,717
+71,492
+308% +$7.55M
STEM icon
319
Stem
STEM
$48.8M
$9.03M 0.03%
79,594
+19,178
+32% +$3.25M
SBAC icon
320
SBA Communications
SBAC
$19.4B
$8.62M 0.03%
33,014
+5,462
+20% +$1.5M
BDN
321
Brandywine Realty Trust
BDN
$541M
$8.22M 0.03%
1,737,814
+5,542
+0.3% +$32.5K
HUM icon
322
Humana
HUM
$46.7B
$6.68M 0.02%
13,769
+550
+4% +$272K
CNYA icon
323
iShares MSCI China A ETF
CNYA
$208M
$6.58M 0.02%
201,304
– –
IWO icon
324
iShares Russell 2000 Growth ETF
IWO
$15B
$6.3M 0.02%
27,769
+24,992
+900% +$5.72M
WMG icon
325
Warner Music
WMG
$13B
$6.01M 0.02%
180,090
-48,614
-21% -$1.64M
11 12
13
14 15

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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.