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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
DBI icon
176
Designer Brands
DBI
$311M
$33.8M 0.11%
2,670,454
-212,105
-7% -$2.27M
HUBG icon
177
HUB Group
HUBG
$2.46B
$33.8M 0.11%
860,782
-62,588
-7% -$2.57M
ABM icon
178
ABM Industries
ABM
$2.84B
$33.7M 0.11%
843,372
-59,261
-7% -$2.57M
MTDR icon
179
Matador Resources
MTDR
$6.5B
$33.7M 0.11%
+566,911
New +$33M
MMS icon
180
Maximus
MMS
$2.85B
$33.7M 0.11%
450,876
-30,976
-6% -$2.52M
STAG icon
181
STAG Industrial
STAG
$7.12B
$33.4M 0.11%
967,818
-73,526
-7% -$2.67M
ECVT icon
182
Ecovyst
ECVT
$1.09B
$33.2M 0.11%
3,370,609
+130,210
+4% +$1.39M
CALM icon
183
Cal-Maine
CALM
$3.86B
$33.1M 0.11%
+683,695
New +$31.8M
VERX icon
184
Vertex
VERX
$2B
$33M 0.11%
1,428,008
+349,683
+32% +$7.2M
CODI icon
185
Compass Diversified
CODI
$908M
$32.9M 0.11%
1,753,696
-141,924
-7% -$2.98M
AWI icon
186
Armstrong World Industries
AWI
$7.75B
$32.9M 0.11%
457,111
-34,276
-7% -$2.56M
CTRE icon
187
CareTrust REIT
CTRE
$9.25B
$32.9M 0.11%
1,604,844
-126,720
-7% -$2.56M
IPAR icon
188
Interparfums
IPAR
$3.78B
$32.7M 0.11%
243,675
+23,838
+11% +$3.27M
KALU icon
189
Kaiser Aluminum
KALU
$3.1B
$32.6M 0.11%
433,169
-34,158
-7% -$2.59M
PRFT
190
DELISTED
Perficient Inc
PRFT
$32.6M 0.11%
+563,046
New +$38.6M
NTCT icon
191
NETSCOUT
NTCT
$2.87B
$32.3M 0.11%
1,152,795
-85,203
-7% -$2.44M
NXGN
192
DELISTED
NextGen Healthcare, Inc. Common Stock
NXGN
$32.3M 0.11%
1,360,317
-603,992
-31% -$11.4M
SMP icon
193
Standard Motor Products
SMP
$877M
$32.3M 0.11%
959,582
-74,652
-7% -$2.72M
EBC icon
194
Eastern Bankshares
EBC
$5.34B
$32.2M 0.11%
2,570,356
+516,200
+25% +$6.94M
CSGS
195
DELISTED
CSG Systems International
CSGS
$32.1M 0.11%
627,378
-50,695
-7% -$2.69M
SP
196
DELISTED
SP Plus Corporation
SP
$32M 0.11%
887,726
-69,095
-7% -$2.68M
TPH
197
DELISTED
Tri Pointe Homes
TPH
$31.9M 0.11%
1,166,456
-94,584
-8% -$2.9M
SHC icon
198
Sotera Health
SHC
$5.39B
$31.7M 0.11%
2,116,316
+154,670
+8% +$2.61M
GSHD icon
199
Goosehead Insurance
GSHD
$2.33B
$31.6M 0.11%
423,919
-383,951
-48% -$25.8M
WTFC icon
200
Wintrust Financial
WTFC
$11B
$31.5M 0.1%
416,850
-77,710
-16% -$6.11M
6 7
8
9 10

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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.