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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
ACVA icon
276
ACV Auctions
ACVA
$1.35B
$23.4M 0.06%
+1,243,491
New +$24.4M
GMED icon
277
Globus Medical
GMED
$11.5B
$22.9M 0.06%
317,684
+150,617
+90% +$10.9M
AUDC icon
278
AudioCodes
AUDC
$257M
$22.7M 0.06%
653,841
-59,890
-8% -$2.09M
PRO
279
DELISTED
PROS Holdings
PRO
$22.6M 0.06%
656,473
+6,810
+1% +$233K
CAKE icon
280
Cheesecake Factory
CAKE
$5.84B
$22.5M 0.06%
574,285
+240,965
+72% +$10.1M
VITL icon
281
Vital Farms
VITL
$495M
$21.9M 0.06%
1,210,703
+20,356
+2% +$359K
LOCO icon
282
El Pollo Loco
LOCO
$463M
$21.8M 0.06%
1,538,855
-127,106
-8% -$1.86M
WTFC icon
283
Wintrust Financial
WTFC
$11B
$21.8M 0.06%
239,993
+4,419
+2% +$394K
IDA icon
284
Idacorp
IDA
$8.21B
$21.6M 0.06%
190,966
-12,327
-6% -$1.31M
ASR icon
285
Grupo Aeroportuario del Sureste
ASR
$8.24B
$21.6M 0.06%
104,756
-3,977
-4% -$785K
ARMK icon
286
Aramark
ARMK
$15.9B
$21.5M 0.06%
807,100
+188,710
+31% +$4.94M
BRC icon
287
Brady Corp
BRC
$4.48B
$21.4M 0.06%
+397,562
New +$20.8M
RSI icon
288
Rush Street Interactive
RSI
$2.81B
$21.4M 0.06%
1,294,412
-121,669
-9% -$2.29M
WNS
289
DELISTED
WNS Holdings
WNS
$21.1M 0.06%
239,078
+5,897
+3% +$506K
CTT
290
DELISTED
CATCHMARK TIMBER TRUST, INC.
CTT
$21.1M 0.06%
2,419,903
-197,753
-8% -$1.76M
LQD icon
291
iShares iBoxx $ Investment Grade Corporate Bond ETF
LQD
$32.7B
$20.9M 0.06%
157,900
-20,730
-12% -$2.76M
ANIP icon
292
ANI Pharmaceuticals
ANIP
$1.73B
$20.8M 0.06%
451,444
+77,338
+21% +$3.32M
WMG icon
293
Warner Music
WMG
$13B
$20.5M 0.06%
474,052
-217,210
-31% -$9.76M
A icon
294
Agilent Technologies
A
$41.9B
$20.4M 0.06%
127,746
-72,034
-36% -$11.2M
VMC icon
295
Vulcan Materials
VMC
$36.3B
$20.2M 0.05%
97,463
-60,657
-38% -$11.7M
MDB icon
296
MongoDB
MDB
$35.2B
$20.1M 0.05%
38,019
-36,728
-49% -$18.8M
LPLA icon
297
LPL Financial
LPLA
$29.7B
$20M 0.05%
125,004
+2,304
+2% +$380K
EXP icon
298
Eagle Materials
EXP
$6.47B
$19.1M 0.05%
114,513
-26,820
-19% -$4.12M
AORT icon
299
Artivion
AORT
$1.4B
$19M 0.05%
935,999
+10,355
+1% +$209K
NXGN
300
DELISTED
NextGen Healthcare, Inc. Common Stock
NXGN
$19M 0.05%
+1,069,663
New +$17.2M
10 11
12
13 14

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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.