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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
INVX
176
Innovex International
INVX
$2.13B
$33.3M 0.13%
1,225,376
+125,252
+11% +$2.98M
GEF icon
177
Greif
GEF
$5B
$33M 0.13%
492,826
-18,275
-4% -$1.23M
MTG icon
178
MGIC Investment
MTG
$6.29B
$32.9M 0.13%
2,534,076
-96,076
-4% -$1.26M
THS
179
DELISTED
Treehouse Foods
THS
$32.8M 0.13%
663,226
-165,070
-20% -$7.85M
BBT
180
Beacon Financial Corp
BBT
$2.69B
$32.7M 0.13%
1,093,928
-245,350
-18% -$7.21M
WERN icon
181
Werner Enterprises
WERN
$2.27B
$32.2M 0.12%
799,825
-29,806
-4% -$1.21M
MRTN icon
182
Marten Transport
MRTN
$1.22B
$32.1M 0.12%
1,624,646
-61,163
-4% -$1.22M
MTX icon
183
Minerals Technologies
MTX
$2.25B
$32M 0.12%
526,762
+35,162
+7% +$1.99M
ELME
184
Elme Communities
ELME
$144M
$31.9M 0.12%
1,791,068
+33,298
+2% +$614K
IDXX icon
185
Idexx Laboratories
IDXX
$45B
$31.7M 0.12%
77,699
-29,947
-28% -$11.6M
SBCF icon
186
Seacoast Banking Corp of Florida
SBCF
$3.44B
$31.7M 0.12%
1,015,885
-38,813
-4% -$1.23M
EPI icon
187
WisdomTree India Earnings Fund ETF
EPI
$2.04B
$31.6M 0.12%
+970,000
New +$31.4M
ZIP icon
188
ZipRecruiter
ZIP
$405M
$31.6M 0.12%
1,923,665
+25,822
+1% +$428K
MYE icon
189
Myers Industries
MYE
$1.23B
$31.4M 0.12%
1,412,622
-53,392
-4% -$1.11M
ROP icon
190
Roper Technologies
ROP
$39.1B
$31.2M 0.12%
72,094
-26,876
-27% -$11.1M
BANC icon
191
Banc of California
BANC
$3.1B
$31M 0.12%
1,949,039
-76,497
-4% -$1.25M
WLY icon
192
John Wiley & Sons Class A
WLY
$2.53B
$31M 0.12%
773,267
-30,621
-4% -$1.28M
FCPT icon
193
Four Corners Property Trust
FCPT
$2.74B
$30.9M 0.12%
1,191,346
-44,204
-4% -$1.14M
SIG icon
194
Signet Jewelers
SIG
$3.59B
$30.9M 0.12%
453,979
+225,852
+99% +$14.4M
PACW
195
DELISTED
PacWest Bancorp
PACW
$30.7M 0.12%
1,337,664
-50,197
-4% -$1.22M
CSGS
196
DELISTED
CSG Systems International
CSGS
$30.6M 0.12%
534,313
-20,157
-4% -$1.18M
ADSK icon
197
Autodesk
ADSK
$52.7B
$30.5M 0.12%
163,449
-55,978
-26% -$11.2M
TPH
198
DELISTED
Tri Pointe Homes
TPH
$30.5M 0.12%
1,641,142
+107,822
+7% +$1.87M
UMH
199
UMH Properties
UMH
$1.39B
$30.3M 0.12%
1,880,006
-72,577
-4% -$1.22M
SFNC icon
200
Simmons First National
SFNC
$3.45B
$30.1M 0.12%
1,394,844
-56,309
-4% -$1.28M
6 7
8
9 10

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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.