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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
ICFI icon
201
ICF International
ICFI
$1.6B
$41.8M 0.12%
468,401
+467,431
+48,189% +$42.5M
UMH
202
UMH Properties
UMH
$1.42B
$41.8M 0.12%
1,825,684
+1,821,864
+47,693% +$42.5M
BBT
203
Beacon Financial Corp
BBT
$2.71B
$41.6M 0.12%
1,541,487
+1,539,050
+63,153% +$40.7M
CODI icon
204
Compass Diversified
CODI
$925M
$41.6M 0.12%
1,476,007
+1,473,022
+49,347% +$40.4M
SBCF icon
205
Seacoast Banking Corp of Florida
SBCF
$3.48B
$41.5M 0.12%
1,228,145
+1,190,478
+3,161% +$37.7M
CSGS
206
DELISTED
CSG Systems International
CSGS
$41.2M 0.12%
855,664
+853,934
+49,360% +$40M
HI
207
DELISTED
Hillenbrand
HI
$41.2M 0.12%
+966,994
New +$42.5M
ROP icon
208
Roper Technologies
ROP
$39.3B
$40.5M 0.11%
90,880
-1,012
-1% -$485K
LHCG
209
DELISTED
LHC Group LLC
LHCG
$40.3M 0.11%
256,956
+3,026
+1% +$568K
MTRN icon
210
Materion
MTRN
$5.88B
$40.3M 0.11%
586,456
+585,271
+49,390% +$41.9M
STE icon
211
Steris
STE
$23B
$40.1M 0.11%
196,472
-8,082
-4% -$1.73M
DLX icon
212
Deluxe
DLX
$1.11B
$40M 0.11%
1,114,222
+1,111,892
+47,721% +$45.2M
CBRL icon
213
Cracker Barrel
CBRL
$1.31B
$40M 0.11%
285,730
+285,155
+49,592% +$39.9M
ZD icon
214
Ziff Davis
ZD
$1.92B
$39.8M 0.11%
334,685
-1,456,276
-81% -$175M
LIN icon
215
Linde
LIN
$220B
$39.7M 0.11%
135,358
-3,002
-2% -$912K
HCAT icon
216
Health Catalyst
HCAT
$131M
$39.7M 0.11%
793,699
+8,395
+1% +$458K
CALM icon
217
Cal-Maine
CALM
$3.87B
$39.7M 0.11%
1,097,608
+1,095,318
+47,830% +$39.1M
GVA icon
218
Granite Construction
GVA
$5.41B
$39.4M 0.11%
997,152
+995,067
+47,725% +$39.3M
NTCT icon
219
NETSCOUT
NTCT
$2.89B
$39.4M 0.11%
1,463,195
+1,460,220
+49,083% +$40.5M
WERN icon
220
Werner Enterprises
WERN
$2.31B
$39.4M 0.11%
890,104
+888,279
+48,673% +$40.7M
IVV icon
221
iShares Core S&P 500 ETF
IVV
$910B
$38.8M 0.11%
+90,000
New +$39.9M
VOO icon
222
Vanguard S&P 500 ETF
VOO
$1.04T
$38.8M 0.11%
+98,300
New +$39.9M
NTGR icon
223
NETGEAR
NTGR
$647M
$38.8M 0.11%
1,214,575
+1,212,115
+49,273% +$42.1M
THS
224
DELISTED
Treehouse Foods
THS
$38.7M 0.11%
970,390
+968,370
+47,939% +$39.6M
MTX icon
225
Minerals Technologies
MTX
$2.27B
$38.5M 0.11%
551,406
+535,981
+3,475% +$40.9M
7 8
9
10 11

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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.