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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
+19.2%
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
$23.8B
AUM Growth
+$3.63B
Cap. Flow
+$288M
Cap. Flow %
1.21%
Top 10 Hldgs %
20.04%
Holding
441
New
37
Increased
142
Reduced
223
Closed
35

Top Buys

Rank Stock Value
1
CHKP icon
Check Point Software Technologies
CHKP
+$181M
2
BABA icon
Alibaba
BABA
+$124M
3
EWBC icon
East-West Bancorp
EWBC
+$109M
4
STE icon
Steris
STE
+$94.6M
5
BURL icon
Burlington
BURL
+$87.9M

Top Sells

Rank Stock Value
1
SIX
Six Flags Entertainment Corp.
SIX
+$151M
2
FTNT icon
Fortinet
FTNT
+$108M
3
SU icon
Suncor Energy
SU
+$77.7M
4
WST icon
West Pharmaceutical
WST
+$73.5M
5
WW
WW International
WW
+$59M

Sector Composition

Rank Sector Weight
1 Technology 17.21%
2 Consumer Discretionary 14.5%
3 Healthcare 14.2%
4 Industrials 13.82%
5 Financials 13.22%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
UEIC icon
426
Universal Electronics
UEIC
$74.6M
– –
-1,447,940
Closed -$36.6M
WST icon
427
West Pharmaceutical
WST
$24.7B
– –
-749,634
Closed -$73.5M
WTRG icon
428
Essential Utilities
WTRG
$11.4B
– –
-32,009
Closed -$1.09M
XLV icon
429
State Street Health Care Select Sector SPDR ETF
XLV
$43.9B
– –
-3,957
Closed -$342K
YPF icon
430
YPF Sociedad Anonima American Depositary Shares (Each representing ten (10) Class D shares of Capital Stock)
YPF
$19.3B
– –
-1,850,229
Closed -$24.8M
SIX
431
DELISTED
Six Flags Entertainment Corp.
SIX
– –
-2,714,561
Closed -$151M
PXD
432
DELISTED
Pioneer Natural Resource Co.
PXD
– –
-124,082
Closed -$16.3M
CDK
433
DELISTED
CDK Global, Inc.
CDK
– –
-44,406
Closed -$2.13M
NUAN
434
DELISTED
Nuance Communications, Inc.
NUAN
– –
-1,133,477
Closed -$13M
XOG
435
DELISTED
Extraction Oil & Gas, Inc. Common Stock
XOG
– –
-1,352,570
Closed -$5.8M
RP
436
DELISTED
RealPage, Inc.
RP
– –
-213,271
Closed -$10.3M
DNKN
437
DELISTED
Dunkin' Brands Group, Inc.
DNKN
– –
-12,017
Closed -$771K
CRZO
438
DELISTED
Carrizo Oil & Gas Inc
CRZO
– –
-301,280
Closed -$3.4M
ULTI
439
DELISTED
Ultimate Software Group Inc
ULTI
– –
-44,907
Closed -$11M
UN
440
DELISTED
Unilever NV New York Registry Shares
UN
– –
-133,221
Closed -$7.17M
HK
441
DELISTED
Halcon Resources Corporation
HK
– –
-2,508,092
Closed -$4.26M
14 15 16 17
18

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William Blair Investment Management's Q1 2019 Portfolio in Review

As of Q1 2019, William Blair Investment Management held 441 positions worth $23.8B, up 18% from $20.1B the previous quarter. Its ten largest holdings account for 20% of the portfolio.

William Blair Investment Management's Q1 2019 filing shows 37 new, 142 increased, 223 reduced and 35 closed positions. Its largest new stake was Steris: 803,400 shares worth $103M. The largest sale was Six Flags Entertainment Corp., an estimated $151M.

By sector, the portfolio is most concentrated in Technology at 17% of assets, up from 16% a quarter earlier, followed by Consumer Discretionary and Healthcare.

  • William Blair Investment Management's largest Q1 2019 buy was Steris: 803,400 shares worth $103M.
  • William Blair Investment Management added most to Check Point Software Technologies in Q1 2019, an estimated $181M increase.
  • William Blair Investment Management's biggest Q1 2019 reduction was WW International, cutting an estimated $59M.
  • William Blair Investment Management fully exited Six Flags Entertainment Corp. in Q1 2019, selling an estimated $151M.
  • William Blair Investment Management's ten largest holdings make up 20% of its $23.8B portfolio in Q1 2019.
  • William Blair Investment Management opened 37 new positions and closed 35 in Q1 2019.
  • William Blair Investment Management's portfolio value rose 18% quarter-over-quarter to $23.8B.

Based on William Blair Investment Management's 13F filing for Q1 2019, filed 10 May 2019.