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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
+8.82%
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
$27.9B
AUM Growth
+$434M
Cap. Flow
-$1.39B
Cap. Flow %
-4.97%
Top 10 Hldgs %
16.81%
Holding
485
New
38
Increased
170
Reduced
217
Closed
52

Top Buys

Rank Stock Value
1
RCI icon
Rogers Communications
RCI
+$124M
2
WEX icon
WEX
WEX
+$108M
3
DXCM icon
DexCom
DXCM
+$100M
4
TSM icon
TSMC
TSM
+$99.8M
5
YELP icon
Yelp
YELP
+$93.8M

Top Sells

Rank Stock Value
1
ORLY icon
O'Reilly Automotive
ORLY
+$155M
2
SBNY
Signature Bank
SBNY
+$152M
3
ODFL icon
Old Dominion Freight Line
ODFL
+$132M
4
BABA icon
Alibaba
BABA
+$128M
5
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$119M

Sector Composition

Rank Sector Weight
1 Consumer Discretionary 15.32%
2 Industrials 13.97%
3 Financials 13.47%
4 Technology 12.68%
5 Healthcare 12.14%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
OSIS icon
451
OSI Systems
OSIS
$3.85B
– –
-48,304
Closed -$3.63M
PBR.A icon
452
Petrobras Class A
PBR.A
$103B
– –
-22,985
Closed -$171K
PLAY icon
453
Dave & Buster's
PLAY
$351M
– –
-278,639
Closed -$18.5M
RILY icon
454
BRC Group Holdings
RILY
$292M
– –
-384,593
Closed -$7.13M
SONY icon
455
Sony
SONY
$139B
– –
-359,860
Closed -$2.75M
SWX icon
456
Southwest Gas
SWX
$6.66B
– –
-309,993
Closed -$22.6M
TTE icon
457
TotalEnergies
TTE
$196B
– –
-6,091,898
Closed -$3.26M
ULTA icon
458
Ulta Beauty
ULTA
$23.4B
– –
-85,558
Closed -$24.6M
VMI icon
459
Valmont Industries
VMI
$9.61B
– –
-125,890
Closed -$18.8M
XPO icon
460
XPO
XPO
$23.5B
– –
-33,673
Closed -$753K
VSA
461
VisionSys AI
VSA
$10.7M
– –
-172
Closed -$7.72M
NEX
462
DELISTED
NexTier Oilfield Solutions Inc.
NEX
– –
-68,143
Closed -$1.09M
TTM
463
DELISTED
Tata Motors Limited
TTM
– –
-609,494
Closed -$20.1M
NUAN
464
DELISTED
Nuance Communications, Inc.
NUAN
– –
-94,769
Closed -$1.43M
TCO
465
DELISTED
Taubman Centers Inc.
TCO
– –
-8,244
Closed -$491K
NXTM
466
DELISTED
NxStage Medical Inc.
NXTM
– –
-1,959,318
Closed -$49.1M
RICE
467
DELISTED
Rice Energy Inc.
RICE
– –
-752,539
Closed -$20M
LUX
468
DELISTED
Luxottica Group
LUX
– –
-55,352
Closed -$3.23M
ITP
469
DELISTED
INTERTAPE POLYMER GROUP INC
ITP
– –
-550,300
Closed -$10.5M
LMC
470
DELISTED
LUNDIN MINING CORPORATION
LMC
– –
-8,216,971
Closed -$46.6M
15 16 17 18
19

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William Blair Investment Management's Q3 2017 Portfolio in Review

As of Q3 2017, William Blair Investment Management held 485 positions worth $27.9B, up 1.6% from $27.5B the previous quarter. Its ten largest holdings account for 17% of the portfolio.

William Blair Investment Management withdrew a net $1.39B in Q3 2017, closing 52 positions and reducing 217 holdings. Its most notable exit was Amedisys, an estimated $91.9M position sold in full.

By sector, the portfolio is most concentrated in Consumer Discretionary at 15% of assets, down from 16% a quarter earlier, followed by Industrials and Financials.

Against the trend, William Blair Investment Management opened a new position in Rogers Communications worth $125M.

  • William Blair Investment Management's largest Q3 2017 buy was Rogers Communications: 2,429,600 shares worth $125M.
  • William Blair Investment Management added most to TSMC in Q3 2017, an estimated $99.8M increase.
  • William Blair Investment Management's biggest Q3 2017 reduction was O'Reilly Automotive, cutting an estimated $155M.
  • William Blair Investment Management fully exited Amedisys in Q3 2017, selling an estimated $91.9M.
  • William Blair Investment Management's ten largest holdings make up 17% of its $27.9B portfolio in Q3 2017.
  • William Blair Investment Management opened 38 new positions and closed 52 in Q3 2017.
  • William Blair Investment Management's portfolio value rose 1.6% quarter-over-quarter to $27.9B.

Based on William Blair Investment Management's 13F filing for Q3 2017, filed 13 Nov 2017.