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

Institutional Holders (2015Q3)
Portfolio Summary: 5 Institutional holders with a total value of $17,251,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 KGH Ltd 1,164,800 8,774,000 50.86% Call
2 GROUP ONE TRADING LLC 94,000 4,034,000 23.38% Call
3 JPMORGAN CHASE & CO 70,000 3,004,000 17.41% Call
4 CITADEL ADVISORS LLC 29,300 1,257,000 7.29% Call
5 SIMPLEX TRADING, LLC 371 182,000 1.06% 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.