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MARKWEST ENERGY PARTNERS L P
MARKWEST ENERGY PARTNERS L P. Institutional holdings reported to the SEC.

Institutional Holders (2014Q3)
Portfolio Summary: 3 Institutional holders with a total value of $35,559,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 PEAK6 Group LLC 363,400 27,916,000 78.51% Call
2 CITADEL ADVISORS LLC 55,900 4,294,000 12.08% Call
3 GROUP ONE TRADING LLC 43,600 3,349,000 9.42% Call

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.