XENOPORT INC's ticker is and the CUSIP is 98411C900. A total of 2 filers reported holding XENOPORT INC 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 2016 | $376,000 | +37500.0% | 53,400 | +26600.0% | 0.00% | – |
| Q1 2016 | $1,000 | -94.7% | 200 | -94.1% | 0.00% | – |
| Q4 2015 | $19,000 | -62.7% | 3,400 | -76.7% | 0.00% | -100.0% |
| Q3 2015 | $51,000 | +104.0% | 14,600 | +265.0% | 0.00% | – |
| Q2 2015 | $25,000 | -75.0% | 4,000 | -77.0% | 0.00% | -100.0% |
| Q4 2013 | $100,000 | +426.3% | 17,400 | +427.3% | 0.00% | – |
| Q3 2013 | $19,000 | +46.2% | 3,300 | +26.9% | 0.00% | – |
| Q2 2013 | $13,000 | – | 2,600 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| GROUP ONE TRADING, L.P. | 17,400 | $100,000 | 0.00% |
| Citadel Advisors | 3,200 | $18,000 | 0.00% |