SpiderRock Trading LLC - MARKWEST ENERGY PART ownership

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MARKWEST ENERGY PART's ticker is and the CUSIP is 57075910. A total of 1 filers reported holding MARKWEST ENERGY PART in Q2 2014. The put-call ratio across all filers is - and the average weighting 7.4%.

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Filings
Quarter-by-quarter ownership
SpiderRock Trading LLC ownership history of MARKWEST ENERGY PART
ValueSharesWeighting
Q4 2014$90,000
+60.7%
2,241
-30.9%
0.25%
+29.0%
Q3 2014$56,000–3,241
+1520.5%
0.19%–
Q1 2014$0
-100.0%
200
+2757.1%
0.00%
-100.0%
Q3 2013$1,000
-97.8%
7
-99.5%
0.01%
-98.3%
Q2 2013$46,000–1,462–0.36%–
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Other shareholders
MARKWEST ENERGY PART shareholders Q2 2014
NameSharesValueWeighting ↓
Capital Innovations LLC 12,565$8,991,0007.43%
View complete list of MARKWEST ENERGY PART shareholders