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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
TAL icon
501
TAL Education Group
TAL
$6.54B
– –
-3,838,733
Closed -$96.8M
TFX icon
502
Teleflex
TFX
$5.89B
– –
-342,091
Closed -$137M
THG icon
503
Hanover Insurance
THG
$7.78B
– –
-8,457
Closed -$1.15M
TME icon
504
Tencent Music
TME
$13.7B
– –
-8,170,644
Closed -$126M
TRNO icon
505
Terreno Realty
TRNO
$7.5B
– –
-14,761
Closed -$952K
UNF icon
506
Unifirst Corp
UNF
$5.27B
– –
-5,304
Closed -$1.25M
VIAV icon
507
Viavi Solutions
VIAV
$10.6B
– –
-64,028
Closed -$1.13M
WHD icon
508
Cactus
WHD
$5.81B
– –
-13,125
Closed -$482K
WTS icon
509
Watts Water Technologies
WTS
$12.9B
– –
-10,971
Closed -$1.6M
ZWS icon
510
Zurn Elkay Water Solutions
ZWS
$8.52B
– –
-39,363
Closed -$949K
AMBR
511
Amber International Holding Ltd
AMBR
$123M
– –
-118,158
Closed -$13M
MDRX
512
DELISTED
Veradigm Inc. Common Stock
MDRX
– –
-30,563
Closed -$566K
PDCE
513
DELISTED
PDC Energy, Inc.
PDCE
– –
-30,467
Closed -$1.4M
LSI
514
DELISTED
Life Storage, Inc.
LSI
– –
-10,777
Closed -$1.16M
UMPQ
515
DELISTED
Umpqua Holdings Corp
UMPQ
– –
-59,226
Closed -$1.09M
MNRL
516
DELISTED
Brigham Minerals, Inc. Class A Common Stock
MNRL
– –
-44,282
Closed -$943K
PAE
517
DELISTED
PAE Incorporated Class A Common Stock
PAE
– –
-3,367,162
Closed -$30M
BPFH
518
DELISTED
Boston Private Financial Holdings, Inc.
BPFH
– –
-48,699
Closed -$718K
CADE
519
DELISTED
Cadence Bancorporation
CADE
– –
-48,331
Closed -$1.01M
AZPN
520
DELISTED
ASPEN TECHNOLOGY INC
AZPN
– –
-1,516,682
Closed -$209M
17 18 19 20
21

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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.