Institutional Ownership
Mersana Therapeutics Inc
CUSIP 59045L205COMMRSNQ1 2026
Shares Short
14.0K
As of Dec 31, 2025
Days to Cover
1.00
Short shares ÷ avg daily volume
Change vs Prior
-74.3%
vs previous settlement
Avg Daily Volume
100.1K
FINRA reported ADV
Short Interest History
4 settlements on record · FINRA consolidated
Higher short interest is bearish: increases show red, decreases green.
| Settlement | Shares Short | Prior | Change | Avg Daily Vol | Days to Cover |
|---|---|---|---|---|---|
| Dec 31, 2025 | 14.0K | 54.4K | -74.3% | 100.1K | 1.00 |
| Dec 15, 2025 | 54.4K | 53.8K | +1.2% | 51.1K | 1.06 |
| Nov 28, 2025 | 53.8K | 300.4K | -82.1% | 87.3K | 1.00 |
| Nov 14, 2025 | 300.4K | 323.5K | -7.1% | 347.0K | 1.00 |