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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
WOLF icon
101
Wolfspeed
WOLF
$1.64B
$114M 0.32%
1,412,739
-16,286
-1% -$1.45M
AMED
102
DELISTED
Amedisys
AMED
$114M 0.32%
763,648
+29,075
+4% +$6.04M
HEI.A icon
103
HEICO Corp Class A
HEI.A
$37.1B
$108M 0.31%
914,609
-13,322
-1% -$1.59M
NFE icon
104
New Fortress Energy
NFE
$94.2M
$108M 0.3%
3,877,903
+442,829
+13% +$13.4M
ACN icon
105
Accenture
ACN
$108B
$106M 0.3%
330,543
-23,481
-7% -$7.64M
PACB icon
106
Pacific Biosciences
PACB
$342M
$105M 0.3%
+4,095,003
New +$121M
TXN icon
107
Texas Instruments
TXN
$258B
$97.9M 0.28%
509,590
-22,385
-4% -$4.27M
COST icon
108
Costco
COST
$419B
$96.3M 0.27%
214,356
-4,132
-2% -$1.82M
META icon
109
Meta Platforms (Facebook)
META
$1.5T
$93.3M 0.26%
275,011
-3,205
-1% -$1.15M
SYK icon
110
Stryker
SYK
$131B
$90.9M 0.26%
344,860
-16,467
-5% -$4.4M
INTU icon
111
Intuit
INTU
$90.3B
$90M 0.25%
166,910
-27,424
-14% -$14.8M
OEC icon
112
Orion
OEC
$367M
$88.6M 0.25%
4,857,464
+2,251,199
+86% +$40.3M
GNRC icon
113
Generac Holdings
GNRC
$13.1B
$87.2M 0.25%
213,352
-600,222
-74% -$257M
ULTA icon
114
Ulta Beauty
ULTA
$22.9B
$83M 0.23%
230,058
-5,498
-2% -$1.99M
APTV icon
115
Aptiv
APTV
$10.3B
$82M 0.23%
550,377
-4,588
-0.8% -$714K
EFX icon
116
Equifax
EFX
$20.9B
$80.7M 0.23%
318,639
-5,865
-2% -$1.52M
APO icon
117
Apollo Global Management
APO
$81.7B
$80.4M 0.23%
1,305,225
+303,823
+30% +$18.3M
MTDR icon
118
Matador Resources
MTDR
$6.53B
$80.3M 0.23%
2,112,235
+2,107,965
+49,367% +$64.7M
SBUX icon
119
Starbucks
SBUX
$121B
$79.2M 0.22%
718,239
-11,042
-2% -$1.29M
SKY icon
120
Champion Homes
SKY
$5.02B
$78.3M 0.22%
1,304,414
-40,321
-3% -$2.39M
MAR icon
121
Marriott International
MAR
$92.2B
$77.8M 0.22%
525,407
+36,895
+8% +$5.15M
HNGR
122
DELISTED
Hanger Inc.
HNGR
$77.3M 0.22%
3,518,991
+1,239,247
+54% +$28.7M
IDXX icon
123
Idexx Laboratories
IDXX
$44.8B
$75.7M 0.21%
121,787
-1,395
-1% -$937K
CSGP icon
124
CoStar Group
CSGP
$12.4B
$74M 0.21%
859,901
-25,995
-3% -$2.25M
DLO icon
125
dLocal
DLO
$4.11B
$70.9M 0.2%
1,298,942
+407,980
+46% +$22.8M
3 4
5
6 7

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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.