We are live on ! Find out more
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
TXG icon
76
10x Genomics
TXG
$7.45B
$162M 0.46%
1,109,886
-16,321
-1% -$2.8M
PEGA icon
77
Pegasystems
PEGA
$5.2B
$161M 0.45%
2,528,496
-33,660
-1% -$2.24M
WK icon
78
Workiva
WK
$3.72B
$160M 0.45%
1,138,057
-16,237
-1% -$2.2M
CHE icon
79
Chemed
CHE
$7.07B
$159M 0.45%
+341,857
New +$161M
MRCY icon
80
Mercury Systems
MRCY
$6.64B
$159M 0.45%
3,348,212
-37,615
-1% -$2.09M
LESL icon
81
Leslie's
LESL
$12.5M
$158M 0.45%
385,611
+92,839
+32% +$44.5M
ZEN
82
DELISTED
ZENDESK INC
ZEN
$156M 0.44%
1,343,577
-19,533
-1% -$2.52M
LECO icon
83
Lincoln Electric
LECO
$15.5B
$155M 0.44%
1,203,471
-23,422
-2% -$3.19M
NOVT icon
84
Novanta
NOVT
$6.35B
$154M 0.43%
993,528
-10,397
-1% -$1.51M
NKE icon
85
Nike
NKE
$60.5B
$150M 0.42%
1,031,041
-15,512
-1% -$2.53M
CERT icon
86
Certara
CERT
$1.23B
$149M 0.42%
4,506,196
-266,570
-6% -$8.04M
TMX
87
DELISTED
Terminix Global Holdings, Inc.
TMX
$149M 0.42%
3,564,167
-45,204
-1% -$2.08M
HHR
88
DELISTED
HeadHunter Group PLC American Depositary Shares
HHR
$145M 0.41%
2,964,729
+300,755
+11% +$14.6M
CELH icon
89
Celsius Holdings
CELH
$6.93B
$144M 0.41%
4,782,726
+68,871
+1% +$1.77M
INSM icon
90
Insmed
INSM
$29.1B
$137M 0.39%
4,976,041
-50,143
-1% -$1.32M
ZNGA
91
DELISTED
ZYNGA INC. CL A COMMON
ZNGA
$136M 0.38%
18,114,058
-1,861,735
-9% -$16.9M
ZTS icon
92
Zoetis
ZTS
$29.9B
$135M 0.38%
693,960
-18,470
-3% -$3.73M
EL icon
93
Estee Lauder
EL
$32B
$135M 0.38%
448,841
-18,020
-4% -$5.89M
INMD icon
94
InMode
INMD
$875M
$134M 0.38%
1,678,788
-20,592
-1% -$1.26M
TWST icon
95
Twist Bioscience
TWST
$7.81B
$128M 0.36%
1,197,584
+491,168
+70% +$56.2M
CPRT icon
96
Copart
CPRT
$26.8B
$127M 0.36%
3,665,236
-361,620
-9% -$12.9M
AMD icon
97
Advanced Micro Devices
AMD
$795B
$121M 0.34%
1,180,488
-18,495
-2% -$1.89M
STEM icon
98
Stem
STEM
$51.5M
$119M 0.34%
249,962
-12,075
-5% -$6.35M
GTLS
99
DELISTED
Chart Industries
GTLS
$119M 0.34%
624,750
+615,731
+6,827% +$106M
WIX icon
100
WIX.com
WIX
$2.79B
$115M 0.33%
589,054
+240,865
+69% +$59.7M
2 3
4
5 6

Similar funds

BAMCO Inc
BAMCO Inc New York $33.1B AUM 11.16% 1-Year Est. Return
GAM
Gotham Asset Management New York $32.7B AUM 27.65% 1-Year Est. Return
Kayne Anderson Rudnick Investment Management
Kayne Anderson Rudnick Investment Management Los Angeles, California $34B AUM 6.31% 1-Year Est. Return
Hotchkis & Wiley Capital Management
Hotchkis & Wiley Capital Management Los Angeles, California $32.4B AUM 17.21% 1-Year Est. Return
Public Sector Pension Investment Board (PSP Investments)
Public Sector Pension Investment Board (PSP Investments) Montreal, Quebec, Canada $32.1B AUM 31.84% 1-Year Est. Return
VIA
Vanguard Investments Australia Victoria, Australia $34.6B AUM
Chevy Chase Trust
Chevy Chase Trust Bethesda, Maryland $34.7B AUM 29.45% 1-Year Est. Return
Treasurer of the State of North Carolina
Treasurer of the State of North Carolina Raleigh, North Carolina $31.8B AUM 28.93% 1-Year Est. Return

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.