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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
LULU icon
26
lululemon athletica
LULU
$14.3B
$233M 0.89%
727,015
-51,167
-7% -$16.8M
MRCY icon
27
Mercury Systems
MRCY
$6.55B
$233M 0.89%
5,205,968
-58,573
-1% -$2.77M
CCK icon
28
Crown Holdings
CCK
$13.1B
$233M 0.89%
2,831,472
-284,587
-9% -$22.7M
COST icon
29
Costco
COST
$419B
$221M 0.85%
485,164
+22,970
+5% +$11.2M
ACHC icon
30
Acadia Healthcare
ACHC
$2.9B
$220M 0.84%
2,677,070
-1,032,188
-28% -$85.1M
HALO icon
31
Halozyme
HALO
$11.6B
$211M 0.81%
3,706,003
-730,081
-16% -$37.4M
INSP icon
32
Inspire Medical Systems
INSP
$1.71B
$210M 0.8%
833,423
+174,811
+27% +$37.3M
WH icon
33
Wyndham Hotels & Resorts
WH
$5.38B
$206M 0.79%
2,890,748
-572,873
-17% -$40.5M
NKE icon
34
Nike
NKE
$61.3B
$202M 0.77%
1,729,150
+117,610
+7% +$11.8M
ZTS icon
35
Zoetis
ZTS
$31.1B
$200M 0.76%
1,361,599
+85,216
+7% +$12.6M
GTLS
36
DELISTED
Chart Industries
GTLS
$198M 0.76%
1,718,444
+504,499
+42% +$81M
CWST icon
37
Casella Waste Systems
CWST
$5.89B
$193M 0.74%
2,439,565
-54,050
-2% -$4.34M
GLOB icon
38
Globant
GLOB
$1.68B
$189M 0.72%
1,126,688
-80,301
-7% -$14.2M
SEDG icon
39
SolarEdge
SEDG
$2.05B
$188M 0.72%
662,293
-308,622
-32% -$81.9M
NICE icon
40
Nice
NICE
$5.95B
$186M 0.71%
968,860
-6,476
-0.7% -$1.25M
HDB icon
41
HDFC Bank
HDB
$120B
$184M 0.71%
5,387,318
+299,490
+6% +$9.72M
HQY icon
42
HealthEquity
HQY
$8.83B
$184M 0.7%
2,986,294
-346,675
-10% -$23.3M
APO icon
43
Apollo Global Management
APO
$82.8B
$184M 0.7%
2,879,110
+414,166
+17% +$24.6M
DT icon
44
Dynatrace
DT
$14.4B
$179M 0.69%
4,678,559
+538,823
+13% +$19.6M
ACN icon
45
Accenture
ACN
$110B
$176M 0.67%
658,180
-24,110
-4% -$6.67M
POOL icon
46
Pool Corp
POOL
$7.32B
$175M 0.67%
578,384
-32,955
-5% -$10.4M
GMED icon
47
Globus Medical
GMED
$11.4B
$172M 0.66%
2,317,785
+550,527
+31% +$37.5M
LYV icon
48
Live Nation Entertainment
LYV
$42.7B
$171M 0.65%
2,447,100
+490,045
+25% +$36.3M
MLM icon
49
Martin Marietta Materials
MLM
$33.3B
$170M 0.65%
502,449
-30,041
-6% -$10.2M
VIRT icon
50
Virtu Financial
VIRT
$4.86B
$167M 0.64%
8,203,044
-327,920
-4% -$7.12M
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.