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 ↓ |
|---|---|---|---|
| KGH Ltd | 1,203,600 | $36,529,000 | 2.63% |
| GROUP ONE TRADING, L.P. | 52,400 | $3,464,000 | 0.05% |
| Citadel Advisors | 49,700 | $3,285,000 | 0.00% |
| SIMPLEX TRADING, LLC | 75 | $12,000 | 0.00% |