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%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2015 | $330,000 | +500.0% | 60,000 | +20.0% | 0.00% | – |
| Q1 2015 | $55,000 | -91.1% | 50,000 | -73.0% | 0.00% | -100.0% |
| Q4 2014 | $618,000 | +281.5% | 185,000 | +208.3% | 0.00% | +200.0% |
| Q3 2014 | $162,000 | +912.5% | 60,000 | +20.0% | 0.00% | – |
| Q3 2013 | $16,000 | -90.2% | 50,000 | -42.7% | 0.00% | -100.0% |
| Q2 2013 | $163,000 | – | 87,200 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| GROUP ONE TRADING, L.P. | 39,600 | $2,233,000 | 0.03% |
| SIMPLEX TRADING, LLC | 113 | $46,000 | 0.00% |
| Citadel Advisors | 45,700 | $2,577,000 | 0.00% |
| SG Americas Securities, LLC | 60,000 | $330,000 | 0.00% |