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WESTERN DIGITAL CORP
WESTERN DIGITAL CORP. Institutional holdings reported to the SEC.

Institutional Holders (2016Q3)
Portfolio Summary: 6 Institutional holders with a total value of $83,662,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 GROUP ONE TRADING LLC 534,600 31,258,000 37.36% Put
2 CIBC WORLD MARKETS CORP 333,000 19,471,000 23.27% Put
3 Timber Hill LLC 291,000 17,015,000 20.34% Put
4 Pentwater Capital Management LP 257,600 15,062,000 18.00% Put
5 SIMPLEX TRADING, LLC 4,224 622,000 0.74% Put
6 Marathon Trading Investment Management LLC 4,000 234,000 0.28% Put

From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.