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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
GEF icon
201
Greif
GEF
$5B
$31.3M 0.1%
468,931
-34,695
-7% -$2.46M
ABCB icon
202
Ameris Bancorp
ABCB
$5.94B
$31.2M 0.1%
811,421
-59,076
-7% -$2.35M
MTG icon
203
MGIC Investment
MTG
$6.29B
$31.1M 0.1%
1,865,891
-723,038
-28% -$12.3M
BAH icon
204
Booz Allen Hamilton
BAH
$9.43B
$31.1M 0.1%
284,453
-5,679
-2% -$653K
ONB icon
205
Old National Bancorp
ONB
$10.4B
$31.1M 0.1%
2,137,357
-156,374
-7% -$2.42M
MTX icon
206
Minerals Technologies
MTX
$2.25B
$31M 0.1%
565,365
-42,594
-7% -$2.43M
ESRT icon
207
Empire State Realty Trust
ESRT
$817M
$31M 0.1%
3,850,199
-279,505
-7% -$2.33M
ADSK icon
208
Autodesk
ADSK
$52.7B
$30.9M 0.1%
149,392
-11,112
-7% -$2.33M
TEX icon
209
Terex
TEX
$7.8B
$30.9M 0.1%
536,190
-234,901
-30% -$14M
OXM icon
210
Oxford Industries
OXM
$538M
$30.7M 0.1%
319,815
+57,091
+22% +$5.79M
CBZ icon
211
CBIZ
CBZ
$2.96B
$30.7M 0.1%
591,991
-160,160
-21% -$8.63M
ADC icon
212
Agree Realty
ADC
$9.25B
$30.7M 0.1%
556,130
+54,937
+11% +$3.43M
COLB icon
213
Columbia Banking Systems
COLB
$9.12B
$30.6M 0.1%
1,505,140
+147,011
+11% +$3.07M
MRTN icon
214
Marten Transport
MRTN
$1.22B
$30.4M 0.1%
1,540,478
-120,930
-7% -$2.56M
WGO icon
215
Winnebago Industries
WGO
$915M
$30.3M 0.1%
510,011
-37,416
-7% -$2.43M
PNFP icon
216
Pinnacle Financial Partners Inc
PNFP
$16.1B
$30.2M 0.1%
449,755
-147,452
-25% -$9.95M
MYE icon
217
Myers Industries
MYE
$1.23B
$29.6M 0.1%
1,652,841
-126,696
-7% -$2.39M
WERN icon
218
Werner Enterprises
WERN
$2.27B
$29.6M 0.1%
759,457
-58,071
-7% -$2.49M
PRGS icon
219
Progress Software
PRGS
$1.79B
$29.5M 0.1%
560,629
-44,335
-7% -$2.6M
CHX
220
DELISTED
ChampionX
CHX
$29.4M 0.1%
825,418
+23,216
+3% +$825K
DFIN icon
221
Donnelley Financial Solutions
DFIN
$1.17B
$29.4M 0.1%
522,002
+14,296
+3% +$694K
IDXX icon
222
Idexx Laboratories
IDXX
$45B
$29.4M 0.1%
67,135
-7,906
-11% -$3.94M
SHOO icon
223
Steven Madden
SHOO
$3.49B
$29.3M 0.1%
922,027
-71,749
-7% -$2.39M
ANIP icon
224
ANI Pharmaceuticals
ANIP
$1.73B
$29M 0.1%
500,059
-39,069
-7% -$2.25M
ULTA icon
225
Ulta Beauty
ULTA
$22.9B
$29M 0.1%
72,607
-1,548
-2% -$677K
7 8
9
10 11

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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.