Mersana Therapeutics Inc. (MRSN)
NASDAQ: MRSN
· Real-Time Price · USD
8.28
0.28 (3.50%)
At close: Oct 03, 2025, 3:59 PM
8.11
-2.05%
After-hours: Oct 03, 2025, 06:33 PM EDT
MRSN Gamma Exposure By Expiry
The total Gamma Exposure (GEX) for MRSN across all expirations is 131.94 shares per 1% move, with 133.44 from calls and 1.5 from puts. The put-call GEX ratio of 0.01 shows call-heavy positioning, potentially creating volatility as market makers hedge by selling into strength and buying weakness.
MRSN GEX Table
| Expiry Date | Call GEX | Put GEX | Net GEX | P/C GEX |
|---|---|---|---|---|
| Nov 21, 25 | 0 | 0 | 0 | n/a |
| Jan 16, 26 | 133.44 | -1.07 | 132.37 | 0.01 |
| Feb 20, 26 | 0 | -0.43 | -0.43 | n/a |