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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
AYI icon
426
Acuity Brands
AYI
$10.8B
$221K ﹤0.01%
+1,275
New +$224K
UNVR
427
DELISTED
Univar Solutions Inc.
UNVR
$211K ﹤0.01%
+8,877
New +$210K
HBAN icon
428
Huntington Bancshares
HBAN
$36.1B
$191K ﹤0.01%
+12,359
New +$182K
EMB icon
429
iShares JPMorgan USD Emerging Markets Bond ETF
EMB
$14.9B
$65K ﹤0.01%
590
– –
ECH icon
430
iShares MSCI Chile ETF
ECH
$1.03B
$42K ﹤0.01%
1,600
-283,800
-99% -$7.76M
AAT
431
American Assets Trust
AAT
$1.39B
– –
-26,591
Closed -$992K
ADC icon
432
Agree Realty
ADC
$9.25B
– –
-13,851
Closed -$976K
AJG icon
433
Arthur J. Gallagher & Co
AJG
$65.5B
– –
-180,462
Closed -$25.3M
ALG icon
434
Alamo Group
ALG
$2.01B
– –
-2,528
Closed -$386K
AROC icon
435
Archrock
AROC
$5.84B
– –
-79,175
Closed -$705K
AVNS
436
DELISTED
Avanos Medical
AVNS
– –
-14,604
Closed -$531K
AVNT icon
437
Avient
AVNT
$4.16B
– –
-22,838
Closed -$1.12M
BANR icon
438
Banner Corp
BANR
$2.5B
– –
-15,929
Closed -$864K
BJ icon
439
BJs Wholesale Club
BJ
$11.8B
– –
-3,501,494
Closed -$167M
BKH icon
440
Black Hills Corp
BKH
$5.58B
– –
-14,508
Closed -$952K
BLD
441
DELISTED
TopBuild
BLD
– –
-6,991
Closed -$1.38M
BRC icon
442
Brady Corp
BRC
$4.48B
– –
-31,768
Closed -$1.78M
CASY icon
443
Casey's General Stores
CASY
$31B
– –
-4,851
Closed -$944K
CDNA icon
444
CareDx
CDNA
$2.45B
– –
-332,923
Closed -$30.5M
CHDN icon
445
Churchill Downs
CHDN
$6.17B
– –
-8,992
Closed -$891K
CNMD icon
446
CONMED
CNMD
$1.48B
– –
-11,701
Closed -$1.61M
CNO icon
447
CNO Financial Group
CNO
$5.02B
– –
-47,401
Closed -$1.12M
CNX icon
448
CNX Resources
CNX
$5.29B
– –
-66,049
Closed -$902K
CPK icon
449
Chesapeake Utilities
CPK
$3.25B
– –
-6,958
Closed -$837K
CRS icon
450
Carpenter Technology
CRS
$26.3B
– –
-21,722
Closed -$874K
16 17
18
19 20

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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.