Options Chain for RESEARCH FRONTIERS INC COM (REFR) - $1.82 as of 10/8/2025 4:34:17 PM EST
Calls
| Strike | Bid | Ask | Premium | Last Price | Change | %Chg | Premium to Strike Price Ratio | Volume | Open Interest | IV | Delta | Gamma | Theta | Last Trade | Last Updated |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2.50 | 0.00 | 0.05 | 0.03 | 0.04 | 0.00 | 0.00% | 0.01 | 0 | 164 | 1.80 | 0.07 | 0.42 | 0.00 | 10/7/2025 | 10/8/2025 3:59:54 PM EST |
| 5.00 | 0.00 | 0.75 | 0.38 | 0.05 | 0.00 | 0.00% | 0.08 | 0 | 1 | 0.00 | 0.00 | 0.00 | 0.00 | 10/3/2025 | 10/8/2025 3:59:54 PM EST |
| 7.50 | 0.00 | 0.75 | 0.38 | 0.05 | 0.00 | 0.00% | 0.05 | 0 | 2 | 0.00 | 0.00 | 0.00 | 0.00 | 10/2/2025 | 10/8/2025 3:59:54 PM EST |
Puts
| Strike | Bid | Ask | Premium | Last Price | Change | %Chg | Premium to Strike Price Ratio | Volume | Open Interest | IV | Delta | Gamma | Theta | Last Trade | Last Updated |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2.50 | 0.55 | 0.75 | 0.65 | % | 0.26 | 0 | 0 | 3.12 | -0.93 | 0.42 | 0.00 | 10/8/2025 3:59:54 PM EST | |||
| 5.00 | 3.00 | 3.20 | 3.10 | % | 0.62 | 0 | 0 | 5.75 | -1.00 | 0.00 | 0.00 | 10/8/2025 3:59:54 PM EST | |||
| 7.50 | 5.50 | 5.70 | 5.60 | 6.10 | 0.00 | 0.00% | 0.75 | 0 | 1 | 7.00 | -1.00 | 0.00 | 0.00 | 9/26/2025 | 10/8/2025 3:59:54 PM EST |