Options Chain for RESEARCH FRONTIERS INC COM (REFR) - $1.51 as of 8/13/2025 9:12:17 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 | 0.05 | 0.00 | 0.00% | 0.01 | 0 | 314 | 5.78 | 0.03 | 0.19 | 0.00 | 8/5/2025 | 8/13/2025 3:59:53 PM EST |
| 5.00 | 0.00 | 0.75 | 0.38 | % | 0.08 | 0 | 0 | 0.00 | 0.00 | 0.00 | 0.00 | 8/13/2025 3:59:53 PM EST | |||
| 7.50 | 0.00 | 0.75 | 0.38 | 0.05 | 0.00 | 0.00% | 0.05 | 0 | 5 | 0.00 | 0.00 | 0.00 | 0.00 | 7/30/2025 | 8/13/2025 3:59:53 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 | 0.75 | 1.10 | 0.93 | 0.75 | 0.00 | 0.00% | 0.37 | 0 | 10 | 7.85 | -0.97 | 0.19 | 0.00 | 6/25/2025 | 8/13/2025 3:59:53 PM EST |
| 5.00 | 3.40 | 3.60 | 3.50 | % | 0.70 | 0 | 0 | 0.00 | -1.00 | 0.00 | 0.00 | 8/13/2025 3:59:53 PM EST | |||
| 7.50 | 5.90 | 6.10 | 6.00 | % | 0.80 | 0 | 0 | 0.00 | -1.00 | 0.00 | 0.00 | 8/13/2025 3:59:53 PM EST |