Research Frontiers Incorporated REFR options

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0.35 USD
-0.03 -7.89%
Bid
0.34 × 1
Ask
0.36 × 4

Extended hours 0.37 +5.71%

As of Oct 30, 2026

REFR option chain
CallsStrikePuts
BidAskLast% ChgVolumeOpen intImpl volBidAskLast% ChgVolumeOpen intImpl vol
0.00 0.75 0.10 0.00% 40 40 0.0%0.50 — — — — — — —
— — — — — — —1.00 0.20 1.20 0.45 0.00% 10 5 456.3%
— — — — — — —1.50 0.65 1.65 0.99 0.00% 1 1 200.0%
0.00 0.05 0.04 0.00% 10 529 537.5%2.50 1.65 2.40 2.10 +2.44% 1 1 1325.0%
— — — — — — —5.00 4.30 4.90 4.60 +2.22% 1 1 1431.3%

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