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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
+1.57%
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
$23.4B
AUM Growth
-$452M
Cap. Flow
-$478M
Cap. Flow %
-2.05%
Top 10 Hldgs %
20.73%
Holding
398
New
26
Increased
153
Reduced
172
Closed
41

Top Buys

Rank Stock Value
1
IAA
IAA, Inc. Common Stock
IAA
+$134M
2
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$128M
3
WWE
World Wrestling Entertainment
WWE
+$112M
4
PFPT
Proofpoint, Inc.
PFPT
+$102M
5
PRSP
Perspecta Inc. Common Stock
PRSP
+$97.8M

Top Sells

Rank Stock Value
1
RCI icon
Rogers Communications
RCI
+$201M
2
CSGP icon
CoStar Group
CSGP
+$173M
3
CPRT icon
Copart
CPRT
+$156M
4
GWR
Genesee & Wyoming Inc.
GWR
+$147M
5
DPZ icon
Domino's
DPZ
+$137M

Sector Composition

Rank Sector Weight
1 Technology 20.24%
2 Healthcare 13.8%
3 Consumer Discretionary 13.77%
4 Industrials 13.46%
5 Financials 13.14%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
IWF icon
376
iShares Russell 1000 Growth ETF
IWF
$127B
– –
-2,920
Closed -$115K
KMT icon
377
Kennametal
KMT
$2.3B
– –
-435,611
Closed -$16.1M
NFLX icon
378
Netflix
NFLX
$311B
– –
-491,100
Closed -$18M
NOAH
379
Noah Holdings
NOAH
$591M
– –
-50,347
Closed -$2.14M
NTB icon
380
Bank of N.T. Butterfield & Son
NTB
$2.49B
– –
-637,978
Closed -$21.7M
PLAY icon
381
Dave & Buster's
PLAY
$349M
– –
-260,292
Closed -$10.5M
PUK icon
382
Prudential
PUK
$34B
– –
-110,133
Closed -$4.68M
RCI icon
383
Rogers Communications
RCI
$19.1B
– –
-3,760,186
Closed -$201M
RRC icon
384
Range Resources
RRC
$9.5B
– –
-1,477,119
Closed -$10.3M
RY icon
385
Royal Bank of Canada
RY
$292B
– –
-19,493
Closed -$1.55M
STM icon
386
STMicroelectronics
STM
$49.1B
– –
-225,232
Closed -$3.97M
THRM icon
387
Gentherm
THRM
$1.27B
– –
-344,541
Closed -$14.4M
WSO icon
388
Watsco Inc
WSO
$13.2B
– –
-122,264
Closed -$20M
XLE icon
389
State Street Energy Select Sector SPDR ETF
XLE
$39.8B
– –
-1,150,400
Closed -$36.6M
AAMI
390
Acadian Asset Management
AAMI
$3.25B
– –
-3,672,966
Closed -$41.9M
TWOU
391
DELISTED
2U Inc
TWOU
– –
-11,500
Closed -$13M
PTE
392
DELISTED
PolarityTE, Inc. Common Stock
PTE
– –
-19,898
Closed -$2.83M
MDP
393
DELISTED
Meredith Corporation
MDP
– –
-325,035
Closed -$17.9M
SWI
394
DELISTED
SolarWinds Corporation Common Stock
SWI
– –
-585,283
Closed -$11.3M
GRUB
395
DELISTED
Just Eat Takeaway.com N.V. American Depositary Shares
GRUB
– –
-31,136
Closed -$4.86M
GWR
396
DELISTED
Genesee & Wyoming Inc.
GWR
– –
-1,469,833
Closed -$147M
CBM
397
DELISTED
Cambrex Corporation
CBM
– –
-2,639,861
Closed -$124M
WP
398
DELISTED
Worldpay, Inc.
WP
– –
-698,005
Closed -$85.5M
12 13 14 15
16

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PPF
PFA Pension Forsikringsaktieselskab Copenhagen $33.2B AUM
BAMCO Inc
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GAM
Gotham Asset Management New York $32.7B AUM 27.65% 1-Year Est. Return
Kayne Anderson Rudnick Investment Management
Kayne Anderson Rudnick Investment Management Los Angeles, California $34B AUM 6.31% 1-Year Est. Return
Hotchkis & Wiley Capital Management
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Public Sector Pension Investment Board (PSP Investments)
Public Sector Pension Investment Board (PSP Investments) Montreal, Quebec, Canada $32.1B AUM 31.84% 1-Year Est. Return
VIA
Vanguard Investments Australia Victoria, Australia $34.6B AUM
Chevy Chase Trust
Chevy Chase Trust Bethesda, Maryland $34.7B AUM 29.45% 1-Year Est. Return

William Blair Investment Management's Q3 2019 Portfolio in Review

As of Q3 2019, William Blair Investment Management held 398 positions worth $23.4B, down 1.9% from $23.8B the previous quarter. Its ten largest holdings account for 21% of the portfolio.

William Blair Investment Management's Q3 2019 filing shows 26 new, 153 increased, 172 reduced and 41 closed positions. Its largest new stake was IAA, Inc. Common Stock: 2,969,390 shares worth $124M. The largest sale was Rogers Communications, an estimated $201M.

By sector, the portfolio is most concentrated in Technology at 20% of assets, up from 18% a quarter earlier, followed by Healthcare and Consumer Discretionary.

  • William Blair Investment Management's largest Q3 2019 buy was IAA, Inc. Common Stock: 2,969,390 shares worth $124M.
  • William Blair Investment Management added most to State Street SPDR S&P 500 ETF Trust in Q3 2019, an estimated $128M increase.
  • William Blair Investment Management's biggest Q3 2019 reduction was CoStar Group, cutting an estimated $173M.
  • William Blair Investment Management fully exited Rogers Communications in Q3 2019, selling an estimated $201M.
  • William Blair Investment Management's ten largest holdings make up 21% of its $23.4B portfolio in Q3 2019.
  • William Blair Investment Management opened 26 new positions and closed 41 in Q3 2019.
  • William Blair Investment Management's portfolio value fell 1.9% quarter-over-quarter to $23.4B.

Based on William Blair Investment Management's 13F filing for Q3 2019, filed 12 Nov 2019.