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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
PR
376
Permian Resources
PR
$18B
– –
-1,102,554
Closed -$4.98M
SSD icon
377
Simpson Manufacturing
SSD
$8.19B
– –
-256,434
Closed -$17.8M
XYL icon
378
Xylem
XYL
$28.8B
– –
-149,980
Closed -$11.9M
ONC
379
BeOne Medicines Ltd
ONC
$40.6B
– –
-78,966
Closed -$9.67M
EQC
380
DELISTED
Equity Commonwealth
EQC
– –
-310,861
Closed -$10.6M
CTLT
381
DELISTED
CATALENT, INC.
CTLT
– –
-2,042,550
Closed -$97.3M
ASPU
382
DELISTED
ASPEN GROUP, INC.
ASPU
– –
-1,243,814
Closed -$6.46M
IAA
383
DELISTED
IAA, Inc. Common Stock
IAA
– –
-2,969,390
Closed -$124M
ACC
384
DELISTED
American Campus Communities, Inc.
ACC
– –
-51,334
Closed -$2.47M
RDS.A
385
DELISTED
Royal Dutch Shell PLC ADS Class A
RDS.A
– –
-97,527
Closed -$5.74M
CXP
386
DELISTED
COLUMBIA PROPERTY TRUST, INC.
CXP
– –
-488,695
Closed -$10.3M
CXO
387
DELISTED
CONCHO RESOURCES INC.
CXO
– –
-5,823
Closed -$395K
CBPX
388
DELISTED
CONTINENTAL BUILDING PRODUCTS, INC.
CBPX
– –
-653,340
Closed -$17.8M
VEDL
389
DELISTED
Vedanta Limited American Depostary Shares (Each representing four equity shares)
VEDL
– –
-154,473
Closed -$1.34M
12 13 14 15
16

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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.