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

Institutional Holders (2014Q2)
Portfolio Summary: 2 Institutional holders with a total value of $4,596,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 CITADEL ADVISORS LLC 34,500 2,470,000 53.74% Call
2 GROUP ONE TRADING LLC 29,700 2,126,000 46.26% 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.