Cboe’s multicast specification adds MRTBW to the C1 symbol distribution with an effective date of 26 October 2026. That establishes the scheduled feed change; it does not by itself establish traded volume or access through every broker.[1]
The launch terms reported by FX News Group describe cash-settled Mini-Russell 2000 binary calls and puts, using the settlement value for PM-settled MRUT options. The equality boundary matters: a call wins at the strike, whereas a put wins only below it.[2]
Terminal payout per contract
| Item | Detail |
|---|---|
| Binary call: settlement at or above strike | $100Source 2 |
| Binary call: settlement below strike | $0Source 2 |
| Binary put: settlement below strike | $100Source 2 |
| Binary put: settlement at or above strike | $0Source 2 |
For example, a hypothetical buyer paying $42 receives a gross $58 gain if the contract pays $100, or loses the $42 premium if it pays zero, before fees. This calculation illustrates the payoff; it is not a live quote or an estimate of the likelihood of either outcome.[2]
Brokers need the correct security identifier, settlement test and customer eligibility for this specific contract. The fixed payout should not be confused with an ordinary index option’s variable intrinsic value.[2]
Sources & further reading
- Titanium multicast PITCH specification: MRTBW effective 26 October Cboe · Accessed 27 Oct 2026
- Cboe Options to list MRUT binary options FX News Group · 5 Oct 2026 · Accessed 27 Oct 2026