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William Blair Investment Management

William Blair Investment Management Portfolio holdings

AUM $30.3B
1-Year Est. Return 33.75%
This Fund
S&P 500
This Quarter Est. Return
+10.03%
1 Year Est. Return
+33.75%
3 Year Est. Return
+108.55%
5 Year Est. Return
+126.9%
10 Year Est. Return
+788.31%
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
MSFT icon
1
Microsoft
MSFT
$3.72T
$771M 2.95%
3,215,268
-6,534
-0.2% -$1.57M
TSM icon
2
TSMC
TSM
$2.18T
$727M 2.78%
9,762,231
+615,611
+7% +$44.5M
LIN icon
3
Linde
LIN
$226B
$431M 1.65%
1,321,710
-124,921
-9% -$39.2M
MA icon
4
Mastercard
MA
$493B
$426M 1.63%
1,224,418
-45,382
-4% -$14.9M
GOOGL icon
5
Alphabet (Google) Class A
GOOGL
$4.34T
$403M 1.54%
4,567,512
-128,315
-3% -$12.2M
CP icon
6
Canadian Pacific Kansas City
CP
$80.4B
$383M 1.47%
5,137,778
+525,673
+11% +$39.5M
BWXT icon
7
BWX Technologies
BWXT
$15.6B
$363M 1.39%
6,249,032
-404,543
-6% -$23.2M
UNH icon
8
UnitedHealth
UNH
$371B
$348M 1.33%
655,836
-16,304
-2% -$8.64M
AMZN icon
9
Amazon
AMZN
$2.97T
$344M 1.32%
4,095,357
-406,771
-9% -$40.2M
ICLR icon
10
Icon
ICLR
$12.5B
$288M 1.1%
1,484,301
-31,937
-2% -$6.33M
BLDR icon
11
Builders FirstSource
BLDR
$8.12B
$285M 1.09%
4,391,938
-656,276
-13% -$41M
AXON
12
Axon Enterprise
AXON
$45.7B
$283M 1.08%
1,704,689
-359,845
-17% -$56.9M
MELI icon
13
Mercado Libre
MELI
$91.9B
$271M 1.04%
320,577
-10,664
-3% -$9.49M
PFGC icon
14
Performance Food Group
PFGC
$18B
$270M 1.03%
4,621,263
-223,554
-5% -$12.2M
EYE icon
15
National Vision
EYE
$1.8B
$268M 1.02%
6,906,339
-1,848,846
-21% -$69.2M
FTI icon
16
TechnipFMC
FTI
$27.2B
$266M 1.02%
21,822,339
+1,123,501
+5% +$12.6M
EHC icon
17
Encompass Health
EHC
$12.5B
$265M 1.01%
4,423,588
+104,492
+2% +$5.68M
PEN icon
18
Penumbra
PEN
$12.8B
$264M 1.01%
1,188,970
+140,457
+13% +$27.5M
MMSI icon
19
Merit Medical Systems
MMSI
$5.3B
$263M 1.01%
3,729,980
-354,017
-9% -$23.6M
CHE icon
20
Chemed
CHE
$7.18B
$256M 0.98%
501,592
-22,450
-4% -$10.9M
CCJ icon
21
Cameco
CCJ
$42.5B
$254M 0.97%
11,205,706
+997,313
+10% +$23.5M
TD icon
22
Toronto Dominion Bank
TD
$200B
$241M 0.92%
3,729,196
-278,447
-7% -$18M
CSGP icon
23
CoStar Group
CSGP
$12.5B
$240M 0.92%
3,108,506
-89,420
-3% -$6.99M
EEFT icon
24
Euronet Worldwide
EEFT
$2.68B
$239M 0.91%
2,529,806
-98,933
-4% -$8.57M
BCO icon
25
Brink's
BCO
$4.59B
$235M 0.9%
4,380,524
-165,695
-4% -$9.6M
1
2 3 4 5

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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.