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William Blair Investment Management

William Blair Investment Management Portfolio holdings

AUM $30.3B
1-Year Est. Return 33.75%
This Fund
S&P 500
This Quarter Est. Return
+9.46%
1 Year Est. Return
+33.75%
3 Year Est. Return
+108.55%
5 Year Est. Return
+126.9%
10 Year Est. Return
+788.31%
AUM
$25.1B
AUM Growth
+$1.71B
Cap. Flow
-$116M
Cap. Flow %
-0.46%
Top 10 Hldgs %
21.8%
Holding
389
New
32
Increased
133
Reduced
187
Closed
33

Top Buys

Rank Stock Value
1
ZNGA
ZYNGA INC. CL A COMMON
ZNGA
+$140M
2
OLLI icon
Ollie's Bargain Outlet
OLLI
+$120M
3
PLNT icon
Planet Fitness
PLNT
+$101M
4
ETSY icon
Etsy
ETSY
+$98.5M
5
IRTC icon
iRhythm Holdings
IRTC
+$83.7M

Top Sells

Rank Stock Value
1
CVSA
Covista Inc
CVSA
+$163M
2
EWBC icon
East-West Bancorp
EWBC
+$155M
3
MIDD icon
Middleby
MIDD
+$155M
4
IAA
IAA, Inc. Common Stock
IAA
+$124M
5
CBOE icon
Cboe Global Markets
CBOE
+$98.6M

Sector Composition

Rank Sector Weight
1 Technology 22.67%
2 Healthcare 14.68%
3 Consumer Discretionary 14.55%
4 Industrials 12.39%
5 Financials 11.76%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
LQD icon
126
iShares iBoxx $ Investment Grade Corporate Bond ETF
LQD
$32.7B
$46.6M 0.19%
364,080
-31,900
-8% -$4.06M
ASR icon
127
Grupo Aeroportuario del Sureste
ASR
$8.12B
$45.4M 0.18%
242,285
-23,720
-9% -$4.03M
SYK icon
128
Stryker
SYK
$133B
$44.4M 0.18%
211,540
+33,428
+19% +$6.94M
GREK
129
Global X MSCI Greece ETF
GREK
$329M
$43.7M 0.17%
1,436,567
-212,733
-13% -$6.2M
CYBR
130
DELISTED
CyberArk
CYBR
$41.7M 0.17%
358,034
+72,630
+25% +$8.15M
MCHP icon
131
Microchip Technology
MCHP
$44B
$41.3M 0.16%
788,342
+174,534
+28% +$8.43M
ISRG icon
132
Intuitive Surgical
ISRG
$141B
$41.1M 0.16%
208,581
+2,559
+1% +$479K
BALL icon
133
Ball Corp
BALL
$16.7B
$40.6M 0.16%
627,248
+31,479
+5% +$2.13M
EDU icon
134
New Oriental
EDU
$8.85B
$40.2M 0.16%
331,149
-85,362
-20% -$10.2M
DAR icon
135
Darling Ingredients
DAR
$9.87B
$40.1M 0.16%
1,427,603
-45,223
-3% -$1.01M
EFX icon
136
Equifax
EFX
$21.3B
$39.6M 0.16%
282,669
-51,955
-16% -$7.2M
LIN icon
137
Linde
LIN
$226B
$38.3M 0.15%
179,713
-12,483
-6% -$2.52M
RTN
138
DELISTED
Raytheon Company
RTN
$37.9M 0.15%
172,503
-48,381
-22% -$10.2M
DLB icon
139
Dolby
DLB
$5.79B
$37.1M 0.15%
539,211
-38,102
-7% -$2.52M
COST icon
140
Costco
COST
$418B
$37.1M 0.15%
126,151
-9,031
-7% -$2.68M
ALLE icon
141
Allegion
ALLE
$14.3B
$36.7M 0.15%
294,547
-2,319
-0.8% -$268K
HNGR
142
DELISTED
Hanger Inc.
HNGR
$35.9M 0.14%
1,301,230
+202,491
+18% +$4.81M
A icon
143
Agilent Technologies
A
$42.3B
$33.9M 0.14%
397,525
-6,551
-2% -$516K
LRCX icon
144
Lam Research
LRCX
$389B
$33.7M 0.13%
1,153,820
+217,740
+23% +$5.78M
HOMB icon
145
Home BancShares
HOMB
$6.24B
$33.6M 0.13%
1,709,260
-98,170
-5% -$1.85M
QLYS icon
146
Qualys
QLYS
$6.47B
$32.4M 0.13%
388,642
-832,581
-68% -$69M
BOOT icon
147
Boot Barn
BOOT
$5.08B
$32.1M 0.13%
721,499
+31,864
+5% +$1.26M
APO icon
148
Apollo Global Management
APO
$80.8B
$32M 0.13%
+670,640
New +$28.6M
GOOG icon
149
Alphabet (Google) Class C
GOOG
$4.21T
$31.9M 0.13%
477,620
+90,060
+23% +$5.81M
LAUR icon
150
Laureate Education
LAUR
$5.03B
$31.8M 0.13%
1,804,596
+23,473
+1% +$387K
4 5
6
7 8

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William Blair Investment Management's Q4 2019 Portfolio in Review

As of Q4 2019, William Blair Investment Management held 389 positions worth $25.1B, up 7.3% from $23.4B the previous quarter. Its ten largest holdings account for 22% of the portfolio.

William Blair Investment Management's Q4 2019 filing shows 32 new, 133 increased, 187 reduced and 33 closed positions. Its largest new stake was Ollie's Bargain Outlet: 1,892,527 shares worth $124M. The largest sale was Covista Inc, an estimated $163M.

By sector, the portfolio is most concentrated in Technology at 23% of assets, up from 20% a quarter earlier, followed by Healthcare and Consumer Discretionary.

  • William Blair Investment Management's largest Q4 2019 buy was Ollie's Bargain Outlet: 1,892,527 shares worth $124M.
  • William Blair Investment Management added most to ZYNGA INC. CL A COMMON in Q4 2019, an estimated $140M increase.
  • William Blair Investment Management's biggest Q4 2019 reduction was Middleby, cutting an estimated $155M.
  • William Blair Investment Management fully exited Covista Inc in Q4 2019, selling an estimated $163M.
  • William Blair Investment Management's ten largest holdings make up 22% of its $25.1B portfolio in Q4 2019.
  • William Blair Investment Management opened 32 new positions and closed 33 in Q4 2019.
  • William Blair Investment Management's portfolio value rose 7.3% quarter-over-quarter to $25.1B.

Based on William Blair Investment Management's 13F filing for Q4 2019, filed 12 Feb 2020.