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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
+6.55%
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
$25.7B
AUM Growth
-$2.19B
Cap. Flow
-$3.7B
Cap. Flow %
-14.37%
Top 10 Hldgs %
17.87%
Holding
463
New
30
Increased
148
Reduced
245
Closed
36

Top Sells

Rank Stock Value
1
WP
Worldpay, Inc.
WP
+$346M
2
SBAC icon
SBA Communications
SBAC
+$258M
3
CNC icon
Centene
CNC
+$212M
4
ALGN icon
Align Technology
ALGN
+$207M
5
BABA icon
Alibaba
BABA
+$194M

Sector Composition

Rank Sector Weight
1 Financials 14.64%
2 Consumer Discretionary 14.51%
3 Technology 13.93%
4 Industrials 13.62%
5 Healthcare 11.44%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake
Capital Flow
RYAAY icon
451
Ryanair
RYAAY
$30.9B
-2,792,313
Closed -$118M
SLB icon
452
SLB Ltd
SLB
$78.9B
-552,822
Closed -$38.6M
SNY icon
453
Sanofi
SNY
$104B
-5,738
Closed -$286K
XRAY icon
454
Dentsply Sirona
XRAY
$2.34B
-30,841
Closed -$1.84M
TXNM
455
TXNM Energy Inc
TXNM
$5.91B
-583,884
Closed -$23.5M
CIR
456
DELISTED
CIRCOR International, Inc
CIR
-326,700
Closed -$17.8M
CERN
457
DELISTED
Cerner Corp
CERN
-506,127
Closed -$36.1M
LN
458
DELISTED
LINE Corporation
LN
-637,422
Closed -$23.1M
BITA
459
DELISTED
Bitauto Holdings Limited
BITA
-460,500
Closed -$20.6M
WP
460
DELISTED
Worldpay, Inc.
WP
-4,904,219
Closed -$346M
ENTL
461
DELISTED
Entellus Medical, Inc. Common Stock
ENTL
-451,689
Closed -$8.34M
COWN
462
DELISTED
Cowen Inc. Class A Common Stock
COWN
-458,308
Closed -$8.16M
SHPG
463
DELISTED
Shire pic
SHPG
-92,554
Closed -$14.2M

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William Blair Investment Management's Q4 2017 Portfolio in Review

As of Q4 2017, William Blair Investment Management held 463 positions worth $25.7B, down 7.9% from $27.9B the previous quarter. Its ten largest holdings account for 18% of the portfolio.

William Blair Investment Management withdrew a net $3.7B in Q4 2017, closing 36 positions and reducing 245 holdings. Its most notable exit was Worldpay, Inc., an estimated $346M position sold in full.

By sector, the portfolio is most concentrated in Financials at 15% of assets, up from 13% a quarter earlier, followed by Consumer Discretionary and Technology.

Against the trend, William Blair Investment Management opened a new position in Teledyne Technologies worth $121M.

  • William Blair Investment Management's largest Q4 2017 buy was Teledyne Technologies: 669,495 shares worth $121M.
  • William Blair Investment Management added most to State Street SPDR S&P 500 ETF Trust in Q4 2017, an estimated $206M increase.
  • William Blair Investment Management's biggest Q4 2017 reduction was SBA Communications, cutting an estimated $258M.
  • William Blair Investment Management fully exited Worldpay, Inc. in Q4 2017, selling an estimated $346M.
  • William Blair Investment Management's ten largest holdings make up 18% of its $25.7B portfolio in Q4 2017.
  • William Blair Investment Management opened 30 new positions and closed 36 in Q4 2017.
  • William Blair Investment Management's portfolio value fell 7.9% quarter-over-quarter to $25.7B.

Based on William Blair Investment Management's 13F filing for Q4 2017, filed 14 Feb 2018.