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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
GLDD
201
DELISTED
Great Lakes Dredge & Dock
GLDD
$40.8M 0.11%
2,597,268
-418,999
-14% -$6.38M
AUB icon
202
Atlantic Union Bankshares
AUB
$6.08B
$40.5M 0.11%
1,085,231
+211,005
+24% +$7.67M
BBT
203
Beacon Financial Corp
BBT
$2.71B
$40.4M 0.11%
1,422,218
-119,269
-8% -$3.3M
SFNC icon
204
Simmons First National
SFNC
$3.46B
$40.3M 0.11%
1,364,073
-113,982
-8% -$3.46M
CENX icon
205
Century Aluminum
CENX
$4.67B
$40.3M 0.11%
2,434,629
+813,593
+50% +$11.9M
SBCF icon
206
Seacoast Banking Corp of Florida
SBCF
$3.47B
$40.2M 0.11%
1,136,255
-91,890
-7% -$3.29M
LXFR icon
207
Luxfer Holdings
LXFR
$457M
$40.2M 0.11%
2,082,207
-397,738
-16% -$8.09M
VBTX
208
DELISTED
Veritex Holdings
VBTX
$40M 0.11%
1,005,458
-295,144
-23% -$12M
MTG icon
209
MGIC Investment
MTG
$6.33B
$40M 0.11%
2,773,029
-235,490
-8% -$3.57M
VRNT
210
DELISTED
Verint Systems
VRNT
$39.9M 0.11%
760,057
-185,764
-20% -$8.91M
GEF icon
211
Greif
GEF
$5.06B
$39.8M 0.11%
659,408
-61,522
-9% -$3.98M
ABM icon
212
ABM Industries
ABM
$2.83B
$39.8M 0.11%
974,216
+212,300
+28% +$9.59M
KAMN
213
DELISTED
Kaman Corp
KAMN
$39.8M 0.11%
921,390
+23,061
+3% +$908K
DLX icon
214
Deluxe
DLX
$1.11B
$39.7M 0.11%
1,237,506
+123,284
+11% +$4.35M
ABCB icon
215
Ameris Bancorp
ABCB
$5.99B
$39.6M 0.11%
798,004
-62,357
-7% -$3.22M
BHE icon
216
Benchmark Electronics
BHE
$2.9B
$39.5M 0.11%
1,458,549
+399,166
+38% +$10.3M
OPLN
217
Openlane
OPLN
$4.34B
$39.3M 0.11%
2,517,196
-206,741
-8% -$3.17M
WERN icon
218
Werner Enterprises
WERN
$2.32B
$39.2M 0.11%
821,624
-68,480
-8% -$3.14M
EFSC icon
219
Enterprise Financial Services Corp
EFSC
$2.41B
$39.1M 0.11%
829,536
+94,264
+13% +$4.5M
KLIC icon
220
Kulicke & Soffa
KLIC
$5.02B
$38.9M 0.11%
642,438
-121,985
-16% -$6.98M
EWBC icon
221
East-West Bancorp
EWBC
$18.6B
$38.5M 0.1%
488,965
-239,954
-33% -$19.3M
MODV
222
DELISTED
ModivCare
MODV
$38.3M 0.1%
258,129
-24,504
-9% -$3.79M
CALM icon
223
Cal-Maine
CALM
$3.9B
$37.5M 0.1%
1,013,516
-84,092
-8% -$3.05M
VOO icon
224
Vanguard S&P 500 ETF
VOO
$1.04T
$37.4M 0.1%
85,700
-12,600
-13% -$5.32M
IVV icon
225
iShares Core S&P 500 ETF
IVV
$910B
$37.4M 0.1%
78,400
-11,600
-13% -$5.35M
7 8
9
10 11

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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.