MARKWEST ENERGY PARTNERS L P's ticker is and the CUSIP is 570759900. A total of 4 filers reported holding MARKWEST ENERGY PARTNERS L P in Q4 2013. The put-call ratio across all filers is - and the average weighting 0.2%.
Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| GROUP ONE TRADING, L.P. | 21,500 | $1,553,000 | 0.03% |
| Virtu KCG Holdings LLC | 5,400 | $390,000 | 0.01% |
| Citadel Advisors | 19,600 | $1,416,000 | 0.00% |