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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
-2.74%
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
$30.1B
AUM Growth
-$1.09B
Cap. Flow
+$378M
Cap. Flow %
1.26%
Top 10 Hldgs %
21.93%
Holding
430
New
35
Increased
162
Reduced
197
Closed
32

Top Buys

Rank Stock Value
1
NVDA icon
NVIDIA
NVDA
+$192M
2
SMCI icon
Super Micro Computer
SMCI
+$143M
3
LSCC icon
Lattice Semiconductor
LSCC
+$129M
4
CG icon
Carlyle Group
CG
+$114M
5
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$111M

Top Sells

Rank Stock Value
1
DEN
Denbury Inc.
DEN
+$179M
2
PLNT icon
Planet Fitness
PLNT
+$170M
3
MLM icon
Martin Marietta Materials
MLM
+$141M
4
BLDR icon
Builders FirstSource
BLDR
+$135M
5
CCJ icon
Cameco
CCJ
+$123M

Sector Composition

Rank Sector Weight
1 Technology 25.88%
2 Industrials 15.76%
3 Healthcare 15.67%
4 Consumer Discretionary 13.72%
5 Financials 8.88%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
ACH
301
Accendra Health
ACH
$87.7M
$14.6M 0.05%
903,293
-70,120
-7% -$1.24M
CIGI icon
302
Colliers International
CIGI
$5.27B
$14.5M 0.05%
152,709
+5,075
+3% +$545K
AUDC icon
303
AudioCodes
AUDC
$254M
$14.4M 0.05%
1,429,187
-110,927
-7% -$1.15M
VCYT icon
304
Veracyte
VCYT
$3.58B
$14.1M 0.05%
630,131
+18,610
+3% +$479K
OSW icon
305
OneSpaWorld
OSW
$2.69B
$14M 0.05%
1,244,675
+898,415
+259% +$10.5M
PLD icon
306
Prologis
PLD
$135B
$13.8M 0.05%
123,295
-2,869
-2% -$351K
VINP icon
307
Vinci Compass Investments Ltd
VINP
$624M
$13.7M 0.05%
1,339,127
-12,348
-0.9% -$124K
CGNT icon
308
Cognyte Software
CGNT
$678M
$13.6M 0.05%
2,820,995
-213,805
-7% -$1.08M
ALHC icon
309
Alignment Healthcare
ALHC
$2.82B
$13.3M 0.04%
1,913,459
+544,196
+40% +$3.28M
STEP icon
310
StepStone Group
STEP
$4.06B
$13.1M 0.04%
+416,003
New +$12.1M
LOCO icon
311
El Pollo Loco
LOCO
$467M
$12.9M 0.04%
1,445,423
-112,533
-7% -$1.09M
DIOD icon
312
Diodes
DIOD
$4.7B
$11.7M 0.04%
+148,409
New +$12.5M
TITN icon
313
Titan Machinery
TITN
$429M
$11.2M 0.04%
420,521
-16,393
-4% -$484K
KO icon
314
Coca-Cola
KO
$377B
$10.7M 0.04%
190,333
-27,503
-13% -$1.65M
ARCO icon
315
Arcos Dorados Holdings
ARCO
$1.74B
$10.5M 0.04%
1,112,354
-159,545
-13% -$1.65M
ASTE icon
316
Astec Industries
ASTE
$991M
$10.3M 0.03%
219,224
-133,377
-38% -$6.59M
LGND icon
317
Ligand Pharmaceuticals
LGND
$5.77B
$9.57M 0.03%
159,793
+4,887
+3% +$322K
ABT icon
318
Abbott
ABT
$193B
$9.49M 0.03%
97,951
-2,241
-2% -$235K
BLFS icon
319
BioLife Solutions
BLFS
$1.71B
$9.34M 0.03%
+675,990
New +$10.7M
MODV
320
DELISTED
ModivCare
MODV
$8.3M 0.03%
263,555
-20,299
-7% -$794K
SITM icon
321
SiTime
SITM
$20.6B
$7.94M 0.03%
69,485
-67,671
-49% -$8.34M
BDN
322
Brandywine Realty Trust
BDN
$549M
$7.47M 0.02%
1,645,759
-125,168
-7% -$596K
APLD icon
323
Applied Digital
APLD
$9.06B
$7.19M 0.02%
1,152,940
+606,347
+111% +$4.24M
ENPH icon
324
Enphase Energy
ENPH
$5.35B
$7.14M 0.02%
59,447
-7,771
-12% -$1.11M
HUM icon
325
Humana
HUM
$46.1B
$6.83M 0.02%
14,039
+2
+0% +$940
11 12
13
14 15

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William Blair Investment Management's Q3 2023 Portfolio in Review

As of Q3 2023, William Blair Investment Management held 430 positions worth $30.1B, down 3.5% from $31.2B the previous quarter. Its ten largest holdings account for 22% of the portfolio.

William Blair Investment Management's Q3 2023 filing shows 35 new, 162 increased, 197 reduced and 32 closed positions. Its largest new stake was Super Micro Computer: 5,132,780 shares worth $141M. The largest sale was Denbury Inc., an estimated $179M.

By sector, the portfolio is most concentrated in Technology at 26% of assets, up from 26% a quarter earlier, followed by Industrials and Healthcare.

  • William Blair Investment Management's largest Q3 2023 buy was Super Micro Computer: 5,132,780 shares worth $141M.
  • William Blair Investment Management added most to NVIDIA in Q3 2023, an estimated $192M increase.
  • William Blair Investment Management's biggest Q3 2023 reduction was Martin Marietta Materials, cutting an estimated $141M.
  • William Blair Investment Management fully exited Denbury Inc. in Q3 2023, selling an estimated $179M.
  • William Blair Investment Management's ten largest holdings make up 22% of its $30.1B portfolio in Q3 2023.
  • William Blair Investment Management opened 35 new positions and closed 32 in Q3 2023.
  • William Blair Investment Management's portfolio value fell 3.5% quarter-over-quarter to $30.1B.

Based on William Blair Investment Management's 13F filing for Q3 2023, filed 9 Nov 2023.