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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
IPHI
301
DELISTED
INPHI CORPORATION
IPHI
$8.33M 0.03%
112,498
-46,292
-29% -$3.18M
HMN icon
302
Horace Mann Educators
HMN
$2.12B
$8.31M 0.03%
190,401
-78,680
-29% -$3.48M
PRMW
303
DELISTED
Primo Water Corporation
PRMW
$8.27M 0.03%
737,056
-453,598
-38% -$5.03M
FORR icon
304
Forrester Research
FORR
$225M
$8.27M 0.03%
+198,287
New +$7.39M
IMAX icon
305
IMAX
IMAX
$2.77B
$7.83M 0.03%
383,326
-158,052
-29% -$3.37M
ADC icon
306
Agree Realty
ADC
$9.13B
$7.79M 0.03%
111,045
-45,892
-29% -$3.39M
MOBL
307
DELISTED
MobileIron, Inc.
MOBL
$7.77M 0.03%
1,598,788
+372,862
+30% +$1.99M
CDNA icon
308
CareDx
CDNA
$2.44B
$7.76M 0.03%
359,854
+81,637
+29% +$1.87M
CGNX icon
309
Cognex
CGNX
$10.6B
$7.73M 0.03%
+137,874
New +$7.13M
VRSK icon
310
Verisk Analytics
VRSK
$23.6B
$7.39M 0.03%
49,495
-4,306
-8% -$638K
DEO icon
311
Diageo
DEO
$52.8B
$7.22M 0.03%
42,883
+827
+2% +$134K
SEI
312
Solaris Energy Infrastructure
SEI
$3.87B
$7.21M 0.03%
514,739
-212,785
-29% -$2.56M
SAP icon
313
SAP
SAP
$242B
$7.15M 0.03%
53,334
+4,779
+10% +$628K
ARCE
314
DELISTED
Arco Platform Limited Class A Common Shares
ARCE
$7.14M 0.03%
161,469
+46,548
+41% +$2.07M
MNRL
315
DELISTED
Brigham Minerals, Inc. Class A Common Stock
MNRL
$7.03M 0.03%
+327,769
New +$6.38M
NXPI icon
316
NXP Semiconductors
NXPI
$59.6B
$6.73M 0.03%
52,911
+105
+0.2% +$12.2K
VICI icon
317
VICI Properties
VICI
$28.6B
$6.51M 0.03%
254,774
+43,831
+21% +$1.06M
NPKI
318
NPK International
NPKI
$1.18B
$6.39M 0.03%
1,018,926
-416,765
-29% -$2.71M
ECL icon
319
Ecolab
ECL
$79.8B
$5.7M 0.02%
+29,529
New +$5.61M
WTFC icon
320
Wintrust Financial
WTFC
$10.9B
$5.67M 0.02%
79,913
-7,378
-8% -$492K
RELX icon
321
RELX
RELX
$61.7B
$4.78M 0.02%
189,153
-413
-0.2% -$9.87K
NVS icon
322
Novartis
NVS
$294B
$4.72M 0.02%
49,828
+246
+0.5% +$22.1K
SPB icon
323
Spectrum Brands
SPB
$2.02B
$4.54M 0.02%
70,643
-6,523
-8% -$370K
FMC icon
324
FMC
FMC
$1.3B
$4.45M 0.02%
44,540
-3,570
-7% -$332K
AZN icon
325
AstraZeneca
AZN
$246B
$4.4M 0.02%
44,167
+93
+0.2% +$8.76K
11 12
13
14 15

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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.