MARKWEST ENERGY PARTNERS L P's ticker is and the CUSIP is 570759950. A total of 3 filers reported holding MARKWEST ENERGY PARTNERS L P in Q4 2013. The put-call ratio across all filers is - and the average weighting 0.0%.
Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| GROUP ONE TRADING, L.P. | 37,300 | $2,467,000 | 0.04% |
| Virtu KCG Holdings LLC | 12,100 | $800,000 | 0.01% |
| Citadel Advisors | 44,000 | $2,910,000 | 0.00% |