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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
+10.03%
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
$26.1B
AUM Growth
+$841M
Cap. Flow
-$982M
Cap. Flow %
-3.76%
Top 10 Hldgs %
17.15%
Holding
419
New
32
Increased
142
Reduced
225
Closed
18

Top Buys

Rank Stock Value
1
MZTI
The Marzetti Company
MZTI
+$142M
2
AMBA icon
Ambarella
AMBA
+$92.4M
3
G icon
Genpact
G
+$92.1M
4
CMG icon
Chipotle Mexican Grill
CMG
+$83.1M
5
CG icon
Carlyle Group
CG
+$81.2M

Top Sells

Rank Stock Value
1
ABMD
Abiomed Inc
ABMD
+$241M
2
HZNP
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
+$155M
3
DEN
Denbury Inc.
DEN
+$144M
4
RBA icon
RB Global
RBA
+$101M
5
CABO icon
Cable One
CABO
+$88.8M

Sector Composition

Rank Sector Weight
1 Technology 22.72%
2 Healthcare 17.24%
3 Industrials 15.95%
4 Consumer Discretionary 14.35%
5 Financials 11.06%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
BLK icon
151
Blackrock
BLK
$180B
$36.3M 0.14%
51,201
-18,353
-26% -$12.3M
SHOO icon
152
Steven Madden
SHOO
$3.49B
$36.3M 0.14%
1,134,758
+255,425
+29% +$7.99M
DCOM icon
153
Dime Commercial Bancshares
DCOM
$1.81B
$36M 0.14%
1,130,531
-42,711
-4% -$1.41M
HUBG icon
154
HUB Group
HUBG
$2.46B
$35.9M 0.14%
903,362
-31,338
-3% -$1.22M
SNPS icon
155
Synopsys
SNPS
$79B
$35.5M 0.14%
111,158
-38,276
-26% -$12M
SM icon
156
SM Energy
SM
$7.71B
$35.4M 0.14%
1,015,776
-38,304
-4% -$1.59M
NWE icon
157
NorthWestern Energy
NWE
$4.34B
$35.3M 0.14%
595,084
-22,926
-4% -$1.25M
SMP icon
158
Standard Motor Products
SMP
$877M
$35.1M 0.13%
1,009,474
-40,983
-4% -$1.5M
AUB icon
159
Atlantic Union Bankshares
AUB
$6.06B
$35.1M 0.13%
998,593
-37,805
-4% -$1.29M
KALU icon
160
Kaiser Aluminum
KALU
$3.1B
$34.6M 0.13%
455,851
-18,294
-4% -$1.46M
EBC icon
161
Eastern Bankshares
EBC
$5.34B
$34.6M 0.13%
2,005,784
-82,194
-4% -$1.57M
TMHC
162
DELISTED
Taylor Morrison
TMHC
$34.6M 0.13%
1,139,775
-42,103
-4% -$1.17M
BRC icon
163
Brady Corp
BRC
$4.48B
$34.6M 0.13%
733,790
-28,272
-4% -$1.3M
MMS icon
164
Maximus
MMS
$2.85B
$34.6M 0.13%
471,294
-18,208
-4% -$1.17M
HI
165
DELISTED
Hillenbrand
HI
$34.5M 0.13%
808,237
-30,995
-4% -$1.37M
BLMN icon
166
Bloomin' Brands
BLMN
$975M
$34.3M 0.13%
1,704,573
-64,305
-4% -$1.39M
PLOW icon
167
Douglas Dynamics
PLOW
$981M
$34.3M 0.13%
947,348
+24,343
+3% +$858K
MTRN icon
168
Materion
MTRN
$5.9B
$34.2M 0.13%
390,660
-110,683
-22% -$9.04M
SR icon
169
Spire
SR
$4.89B
$34.2M 0.13%
495,945
+34,718
+8% +$2.36M
MDRX
170
DELISTED
Veradigm Inc. Common Stock
MDRX
$34M 0.13%
1,926,794
+620,612
+48% +$10.4M
KLIC icon
171
Kulicke & Soffa
KLIC
$4.98B
$33.9M 0.13%
765,878
-28,723
-4% -$1.26M
WAFD icon
172
WaFd
WAFD
$2.79B
$33.8M 0.13%
1,008,046
-38,060
-4% -$1.33M
FBNC icon
173
First Bancorp
FBNC
$2.72B
$33.8M 0.13%
789,172
-42,894
-5% -$1.88M
IDA icon
174
Idacorp
IDA
$8.21B
$33.7M 0.13%
312,697
+19,840
+7% +$2.06M
FSS icon
175
Federal Signal
FSS
$7.71B
$33.6M 0.13%
722,334
-103,908
-13% -$4.77M
5 6
7
8 9

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William Blair Investment Management's Q4 2022 Portfolio in Review

As of Q4 2022, William Blair Investment Management held 419 positions worth $26.1B, up 3.3% from $25.3B the previous quarter. Its ten largest holdings account for 17% of the portfolio.

William Blair Investment Management withdrew a net $982M in Q4 2022, closing 18 positions and reducing 225 holdings. Its most notable exit was Abiomed Inc, an estimated $241M position sold in full.

By sector, the portfolio is most concentrated in Technology at 23% of assets, up from 23% a quarter earlier, followed by Healthcare and Industrials.

Against the trend, William Blair Investment Management opened a new position in The Marzetti Company worth $148M.

  • William Blair Investment Management's largest Q4 2022 buy was The Marzetti Company: 748,865 shares worth $148M.
  • William Blair Investment Management added most to Chipotle Mexican Grill in Q4 2022, an estimated $83.1M increase.
  • William Blair Investment Management's biggest Q4 2022 reduction was Horizon Therapeutics Public Limited Company Ordinary Shares, cutting an estimated $155M.
  • William Blair Investment Management fully exited Abiomed Inc in Q4 2022, selling an estimated $241M.
  • William Blair Investment Management's ten largest holdings make up 17% of its $26.1B portfolio in Q4 2022.
  • William Blair Investment Management opened 32 new positions and closed 18 in Q4 2022.
  • William Blair Investment Management's portfolio value rose 3.3% quarter-over-quarter to $26.1B.

Based on William Blair Investment Management's 13F filing for Q4 2022, filed 9 Feb 2023.