MARKWEST ENERGY PART's ticker is and the CUSIP is 57075910. A total of 1 filers reported holding MARKWEST ENERGY PART in Q4 2014. The put-call ratio across all filers is - and the average weighting 0.1%.
Other shareholders
Name | Shares | Value | Weighting ↓ |
---|---|---|---|
SpiderRock Trading LLC | 1,141 | $77,000 | 0.21% |
SpiderRock Trading LLC | 1,100 | $13,000 | 0.04% |