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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
+5.73%
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
$37B
AUM Growth
+$1.55B
Cap. Flow
+$474M
Cap. Flow %
1.28%
Top 10 Hldgs %
16.63%
Holding
465
New
34
Increased
192
Reduced
193
Closed
38

Top Buys

Rank Stock Value
1
MSFT icon
Microsoft
MSFT
+$206M
2
AMZN icon
Amazon
AMZN
+$159M
3
NFLX icon
Netflix
NFLX
+$145M
4
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$127M
5
SKIN icon
SkinHealth Systems
SKIN
+$113M

Top Sells

Rank Stock Value
1
PODD icon
Insulet
PODD
+$218M
2
EHC icon
Encompass Health
EHC
+$200M
3
FCFS icon
FirstCash
FCFS
+$170M
4
GDDY icon
GoDaddy
GDDY
+$167M
5
ZEN
ZENDESK INC
ZEN
+$156M

Sector Composition

Rank Sector Weight
1 Technology 26.95%
2 Healthcare 17.95%
3 Consumer Discretionary 15.98%
4 Industrials 14.09%
5 Financials 7.71%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
CIAN
326
DELISTED
Cian PLC American Depositary Shares, each representing one Ordinary Share
CIAN
$13.6M 0.04%
+1,105,633
New +$15.8M
VERX icon
327
Vertex
VERX
$2.02B
$13.6M 0.04%
856,143
+8,719
+1% +$165K
EWZ icon
328
iShares MSCI Brazil ETF
EWZ
$8.56B
$13.6M 0.04%
483,700
+202,200
+72% +$6.08M
PRMW
329
DELISTED
Primo Water Corporation
PRMW
$13.5M 0.04%
766,304
+12,534
+2% +$215K
LPRO
330
DELISTED
Open Lending Corp
LPRO
$13.4M 0.04%
594,882
+7,010
+1% +$199K
CALY
331
Callaway Golf Company
CALY
$2.99B
$13M 0.04%
472,710
+7,736
+2% +$215K
AERI
332
DELISTED
Aerie Pharmaceuticals
AERI
$12.7M 0.03%
1,807,563
-1,069,586
-37% -$11.2M
FTCH
333
DELISTED
Farfetch Limited Class A Ordinary Shares
FTCH
$12.2M 0.03%
+365,901
New +$13.4M
MTD icon
334
Mettler-Toledo International
MTD
$28.5B
$11.7M 0.03%
6,896
-4,285
-38% -$6.48M
HASI icon
335
Hannon Armstrong Sustainable Infrastructure Capital
HASI
$5.41B
$11.1M 0.03%
208,775
+8,640
+4% +$499K
UPLD icon
336
Upland Software
UPLD
$17.4M
$10.6M 0.03%
58,923
-576
-1% -$147K
CMG icon
337
Chipotle Mexican Grill
CMG
$41.3B
$10.3M 0.03%
293,650
-296,500
-50% -$10.4M
Z icon
338
Zillow
Z
$7.84B
$9.96M 0.03%
156,056
+53,758
+53% +$3.87M
NGMS
339
DELISTED
NeoGames S.A. Ordinary Shares
NGMS
$9.49M 0.03%
341,558
-4,726
-1% -$164K
BTRS
340
DELISTED
BTRS Holdings Inc. Class 1 Common Stock
BTRS
$9.28M 0.03%
1,186,095
+12,577
+1% +$109K
AON icon
341
Aon
AON
$74.6B
$9.04M 0.02%
30,064
-15,241
-34% -$4.57M
ASML icon
342
ASML
ASML
$717B
$8.18M 0.02%
10,267
+464
+5% +$369K
DLB icon
343
Dolby
DLB
$5.75B
$8.14M 0.02%
85,441
-53,151
-38% -$4.76M
CNYA icon
344
iShares MSCI China A ETF
CNYA
$206M
$8.13M 0.02%
+186,500
New +$8.08M
AAP icon
345
Advance Auto Parts
AAP
$3.41B
$8.03M 0.02%
33,487
-50,484
-60% -$11.5M
PLAN
346
DELISTED
Anaplan, Inc.
PLAN
$7.85M 0.02%
171,212
-106,497
-38% -$5.87M
TTWO icon
347
Take-Two Interactive
TTWO
$45.2B
$7.84M 0.02%
44,103
-27,417
-38% -$4.78M
AZUL
348
DELISTED
Azul
AZUL
$7.59M 0.02%
574,755
-237,525
-29% -$3.61M
JNK icon
349
State Street SPDR Bloomberg High Yield Bond ETF
JNK
$7.33B
$7.5M 0.02%
69,050
-9,100
-12% -$986K
GNRC icon
350
Generac Holdings
GNRC
$12.9B
$7.35M 0.02%
20,887
-192,465
-90% -$79.8M
12 13
14
15 16

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William Blair Investment Management's Q4 2021 Portfolio in Review

As of Q4 2021, William Blair Investment Management held 465 positions worth $37B, up 4.4% from $35.5B the previous quarter. Its ten largest holdings account for 17% of the portfolio.

William Blair Investment Management's Q4 2021 filing shows 34 new, 192 increased, 193 reduced and 38 closed positions. Its largest new stake was Netflix: 2,270,340 shares worth $137M. The largest sale was Insulet, an estimated $218M.

By sector, the portfolio is most concentrated in Technology at 27% of assets, up from 25% a quarter earlier, followed by Healthcare and Consumer Discretionary.

  • William Blair Investment Management's largest Q4 2021 buy was Netflix: 2,270,340 shares worth $137M.
  • William Blair Investment Management added most to Microsoft in Q4 2021, an estimated $206M increase.
  • William Blair Investment Management's biggest Q4 2021 reduction was Encompass Health, cutting an estimated $200M.
  • William Blair Investment Management fully exited Insulet in Q4 2021, selling an estimated $218M.
  • William Blair Investment Management's ten largest holdings make up 17% of its $37B portfolio in Q4 2021.
  • William Blair Investment Management opened 34 new positions and closed 38 in Q4 2021.
  • William Blair Investment Management's portfolio value rose 4.4% quarter-over-quarter to $37B.

Based on William Blair Investment Management's 13F filing for Q4 2021, filed 14 Feb 2022.