Options Chain for RESEARCH FRONTIERS INC COM (REFR) - $1.65 as of 12/3/2025 8:45:27 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 | 0.10 | 0.05 | 0.13 | 0.00 | 0.00% | 0.02 | 0 | 2,692 | 2.22 | 0.16 | 0.42 | 0.00 | 11/28/2025 | 12/3/2025 3:59:59 PM EST |
| 5.00 | 0.00 | 0.05 | 0.03 | 0.05 | 0.00 | 0.00% | 0.01 | 0 | 1 | 3.36 | 0.00 | 0.01 | 0.00 | 11/19/2025 | 12/3/2025 3:59:59 PM EST |
| 7.50 | 0.00 | 0.75 | 0.38 | 0.05 | 0.00 | 0.00% | 0.05 | 0 | 6 | 9.93 | 0.00 | 0.00 | 0.00 | 11/24/2025 | 12/3/2025 3:59:59 PM EST |
| 10.00 | % | 0.00 | 0 | 0 | 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 | 0.45 | 1.20 | 0.83 | 0.80 | 0.00 | 0.00% | 0.33 | 0 | 13 | 4.28 | -0.84 | 0.42 | 0.00 | 10/30/2025 | 12/3/2025 3:59:59 PM EST |
| 5.00 | 2.80 | 3.90 | 3.35 | % | 0.67 | 0 | 0 | 7.70 | -1.00 | 0.01 | 0.00 | 12/3/2025 3:59:59 PM EST | |||
| 7.50 | 5.30 | 6.40 | 5.85 | % | 0.78 | 0 | 0 | 8.68 | -1.00 | 0.00 | 0.00 | 12/3/2025 3:59:59 PM EST | |||
| 10.00 | % | 0.00 | 0 | 0 | EST |