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Western Digital
WDC

Overview Fund Activity

605 hedge funds and large institutions have $18.7B invested in Western Digital in 2015 Q1 according to their latest regulatory filings, with 75 funds opening new positions, 219 increasing their positions, 247 reducing their positions, and 67 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
605
Holders Change
–
Holders Change %
0%
% of All Funds
16.14%
Holding in Top 10
21
Holding in Top 10 Change
-9
Holding in Top 10 Change %
-30%
% of All Funds
0.56%
New
75
Increased
219
Reduced
247
Closed
67
Calls
$314M
Puts
$292M
Net Calls
+$22.5M
Net Calls Change
+$87.2M

Top Buyers

1
Citadel Advisors
Citadel Advisors
Florida
+$160M
2
IIM
Ivory Investment Management
New York
+$142M
3
Fidelity Investments
Fidelity Investments
Massachusetts
+$130M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$71.9M
5
Boston Partners
Boston Partners
Massachusetts
+$65.5M

Top Sellers

1
Wellington Management Group
Wellington Management Group
Massachusetts
-$115M
2
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
-$99.1M
3
Two Sigma Investments
Two Sigma Investments
New York
-$70.3M
4
CIP
Cornerstone Investment Partners
Georgia
-$65.3M
5
CGM
Capital Growth Management
Massachusetts
-$63.1M
Name Holding Trade Value Shares
Change 		Shares
Change %
ZDA
301
Zweig-DiMenna Associates
New York
$2.69M +$2.69M +39,095 New
SW
302
SVB Wealth
Massachusetts
$2.69M +$2.49M +36,200 +1,261%
AAF
303
Andra AP-fonden
Sweden
$2.68M +$2.68M +38,896 New
QT
304
Quantbot Technologies
New York
$2.67M +$2.03M +29,459 +313%
Victory Capital Management
305
Victory Capital Management
Texas
$2.63M -$7.02K -102 -0.3%
Nomura Asset Management
306
Nomura Asset Management
Japan
$2.62M -$691K -10,044 -21%
Simplex Trading
307
Simplex Trading
Illinois
$2.6M +$2.6M +37,827 New
LPL Financial
308
LPL Financial
California
$2.58M -$267K -3,825 -9%
MSA
309
Mason Street Advisors
Wisconsin
$2.55M -$7.01M -101,934 -73%
AT
310
Argent Trust
Texas
$2.51M +$264K +3,837 +12%
GF
311
Gerstein Fisher
New York
$2.51M +$30.5K +443 +1%
GACM
312
Green Arrow Capital Management
New York
$2.5M +$2.5M +36,282 New
HCS
313
Harvest Capital Strategies
California
$2.46M +$705K +10,245 +40%
TI
314
Trexquant Investment
Connecticut
$2.38M +$2.38M +34,530 New
CIBC Asset Management
315
CIBC Asset Management
Ontario, Canada
$2.35M +$121K +1,760 +5%
GIA
316
Gateway Investment Advisers
Ohio
$2.32M -$23.9K -348 -1%
LMGAM
317
Liberty Mutual Group Asset Management
Massachusetts
$2.31M +$167K +2,434 +8%
NMERB
318
New Mexico Educational Retirement Board
New Mexico
$2.3M -$118K -1,720 -5%
FMT
319
First Mercantile Trust
Tennessee
$2.29M +$139K +2,014 +6%
WAM
320
World Asset Management
Michigan
$2.28M -$21.1K -307 -0.9%
COPPSERS
321
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$2.27M -$11.1M -161,693 -83%
LOAMS
322
Lombard Odier Asset Management (Switzerland)
Switzerland
$2.25M +$2.25M +32,629 New
AMI
323
Amica Mutual Insurance
Rhode Island
$2.2M – – –
BCM
324
Bridgeway Capital Management
Texas
$2.18M -$5.84M -84,936 -73%
CCIA
325
Campbell & Co Investment Adviser
Maryland
$2.16M +$2.16M +31,457 New
11 12
13
14 15