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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
CVCO icon
451
Cavco Industries
CVCO
$4.6B
– –
-2,702
Closed -$600K
CW icon
452
Curtiss-Wright
CW
$26.7B
– –
-11,383
Closed -$1.35M
DECK icon
453
Deckers Outdoor
DECK
$12.4B
– –
-26,706
Closed -$1.71M
DIN icon
454
Dine Brands
DIN
$462M
– –
-191,317
Closed -$17.1M
DINO icon
455
HF Sinclair
DINO
$15.6B
– –
-14,484
Closed -$477K
EFA icon
456
iShares MSCI EAFE ETF
EFA
$80.2B
$0 ﹤0.01%
490
+5
+1% +$400
EPAC icon
457
Enerpac Tool Group
EPAC
$1.91B
– –
-2,235
Closed -$59K
ESE icon
458
ESCO Technologies
ESE
$7.78B
– –
-7,268
Closed -$682K
EWT icon
459
iShares MSCI Taiwan ETF
EWT
$11.4B
– –
-202,709
Closed -$13M
EXAS
460
DELISTED
Exact Sciences
EXAS
– –
-180,333
Closed -$22.4M
FAF icon
461
First American
FAF
$7.38B
– –
-13,242
Closed -$826K
FCN icon
462
FTI Consulting
FCN
$4.22B
– –
-8,299
Closed -$1.13M
FMC icon
463
FMC
FMC
$1.28B
– –
-183,910
Closed -$19.9M
FNB icon
464
FNB Corp
FNB
$6.86B
– –
-84,590
Closed -$1.04M
FORR icon
465
Forrester Research
FORR
$220M
– –
-495,481
Closed -$22.7M
FSS icon
466
Federal Signal
FSS
$7.71B
– –
-15,655
Closed -$630K
FUL icon
467
H.B. Fuller
FUL
$3.24B
– –
-155
Closed -$10K
HIW icon
468
Highwoods Properties
HIW
$3.46B
– –
-21,736
Closed -$982K
HMN icon
469
Horace Mann Educators
HMN
$2.09B
– –
-20,573
Closed -$770K
HOMB icon
470
Home BancShares
HOMB
$6.23B
– –
-1,171,068
Closed -$28.9M
HWC icon
471
Hancock Whitney
HWC
$6.34B
– –
-37,455
Closed -$1.67M
ILMN icon
472
Illumina
ILMN
$29.1B
– –
-949
Closed -$437K
ITGR icon
473
Integer Holdings
ITGR
$4.25B
– –
-15,391
Closed -$1.45M
IWP icon
474
iShares Russell Mid-Cap Growth ETF
IWP
$21B
– –
-1,921
Closed -$217K
JJSF icon
475
J&J Snack Foods
JJSF
$1.67B
– –
-5,669
Closed -$989K
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.