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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
+2.16%
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
$35.5B
AUM Growth
+$3.59B
Cap. Flow
+$3.35B
Cap. Flow %
9.44%
Top 10 Hldgs %
14.72%
Holding
520
New
55
Increased
211
Reduced
159
Closed
89

Top Buys

Rank Stock Value
1
BBBY
Bed Bath & Beyond
BBBY
+$213M
2
SEDG icon
SolarEdge
SEDG
+$182M
3
CHE icon
Chemed
CHE
+$161M
4
PFGC icon
Performance Food Group
PFGC
+$140M
5
PACB icon
Pacific Biosciences
PACB
+$121M

Top Sells

Rank Stock Value
1
GNRC icon
Generac Holdings
GNRC
+$257M
2
AZPN
ASPEN TECHNOLOGY INC
AZPN
+$209M
3
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$205M
4
ZD icon
Ziff Davis
ZD
+$175M
5
BJ icon
BJs Wholesale Club
BJ
+$167M

Sector Composition

Rank Sector Weight
1 Technology 25.42%
2 Healthcare 19.29%
3 Consumer Discretionary 15.58%
4 Industrials 14.33%
5 Financials 8.5%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
MLKN icon
226
MillerKnoll
MLKN
$1.64B
$38M 0.11%
1,009,986
+1,007,926
+48,928% +$43.3M
ADSK icon
227
Autodesk
ADSK
$52.7B
$38M 0.11%
+133,253
New +$40.8M
GOGO icon
228
Gogo Inc
GOGO
$383M
$37.9M 0.11%
2,191,056
+33,465
+2% +$405K
EPC icon
229
Edgewell Personal Care
EPC
$1.32B
$37.3M 0.11%
1,028,722
+1,026,627
+49,004% +$42.2M
KN icon
230
Knowles
KN
$3.33B
$37.1M 0.1%
1,980,429
+1,976,329
+48,203% +$38.7M
ECPG icon
231
Encore Capital Group
ECPG
$2.07B
$37M 0.1%
750,099
-39,537
-5% -$1.88M
SASR
232
DELISTED
Sandy Spring Bancorp Inc
SASR
$36.9M 0.1%
806,163
+779,915
+2,971% +$33.4M
NWE icon
233
NorthWestern Energy
NWE
$4.34B
$36.8M 0.1%
641,443
+640,128
+48,679% +$39.8M
CDNS icon
234
Cadence Design Systems
CDNS
$89B
$36.6M 0.1%
241,834
-3,200
-1% -$488K
FBNC icon
235
First Bancorp
FBNC
$2.72B
$36.1M 0.1%
839,096
+837,446
+50,754% +$34.1M
EAF icon
236
GrafTech
EAF
$201M
$35.9M 0.1%
348,211
+347,496
+48,601% +$38M
PLD icon
237
Prologis
PLD
$134B
$35.4M 0.1%
281,921
-3,275
-1% -$425K
MDB icon
238
MongoDB
MDB
$35.2B
$35.2M 0.1%
74,747
-6,345
-8% -$2.56M
CENTA icon
239
Central Garden & Pet Co Class A
CENTA
$2.43B
$34.9M 0.1%
1,015,603
+1,013,534
+48,987% +$35M
FRME icon
240
First Merchants
FRME
$2.72B
$34.6M 0.1%
826,197
+824,522
+49,225% +$33.5M
TDS icon
241
Telephone and Data Systems
TDS
$3.82B
$34.5M 0.1%
1,769,085
+1,765,550
+49,945% +$36.6M
ECL icon
242
Ecolab
ECL
$78.1B
$34.3M 0.1%
164,405
-1,615
-1% -$354K
ABM icon
243
ABM Industries
ABM
$2.84B
$34.3M 0.1%
761,916
+760,336
+48,123% +$35.2M
UEIC icon
244
Universal Electronics
UEIC
$75.8M
$34.1M 0.1%
692,710
+691,355
+51,023% +$33.6M
ENSG icon
245
The Ensign Group
ENSG
$10.6B
$33.7M 0.1%
449,819
+448,869
+47,249% +$37.1M
NEE icon
246
NextEra Energy
NEE
$179B
$33.4M 0.09%
424,755
-4,235
-1% -$342K
EFSC icon
247
Enterprise Financial Services Corp
EFSC
$2.41B
$33.3M 0.09%
735,272
+733,752
+48,273% +$32.9M
SHO icon
248
Sunstone Hotel Investors
SHO
$2.01B
$33.2M 0.09%
2,784,278
+1,548,813
+125% +$18.1M
AERI
249
DELISTED
Aerie Pharmaceuticals
AERI
$32.8M 0.09%
2,877,149
+690,649
+32% +$10.1M
NVRI icon
250
Enviri
NVRI
$583M
$32.8M 0.09%
1,933,325
+1,929,315
+48,113% +$35.7M
8 9
10
11 12

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William Blair Investment Management's Q3 2021 Portfolio in Review

As of Q3 2021, William Blair Investment Management held 520 positions worth $35.5B, up 11% from $31.9B the previous quarter. Its ten largest holdings account for 15% of the portfolio.

William Blair Investment Management deployed $3.35B of net new capital in Q3 2021, opening 55 new positions and adding to 211 existing holdings. Its largest new stake was Bed Bath & Beyond: 3,069,659 shares worth $217M.

By sector, the portfolio is most concentrated in Technology at 25% of assets, down from 26% a quarter earlier, followed by Healthcare and Consumer Discretionary.

On the sell side, the largest reduction was Generac Holdings, an estimated $257M trimmed.

  • William Blair Investment Management's largest Q3 2021 buy was Bed Bath & Beyond: 3,069,659 shares worth $217M.
  • William Blair Investment Management added most to Performance Food Group in Q3 2021, an estimated $140M increase.
  • William Blair Investment Management's biggest Q3 2021 reduction was Generac Holdings, cutting an estimated $257M.
  • William Blair Investment Management fully exited ASPEN TECHNOLOGY INC in Q3 2021, selling an estimated $209M.
  • William Blair Investment Management's ten largest holdings make up 15% of its $35.5B portfolio in Q3 2021.
  • William Blair Investment Management opened 55 new positions and closed 89 in Q3 2021.
  • William Blair Investment Management's portfolio value rose 11% quarter-over-quarter to $35.5B.

Based on William Blair Investment Management's 13F filing for Q3 2021, filed 10 Nov 2021.