Most active SPX options / Wed Oct 28 2026

Most active SPX options on Wednesday, October 28, 2026

On Wed Oct 28 2026 the most traded SPX option was the 7750 C 0DTE: 120,469 contracts, $74.1M premium, 47.5x its morning open interest; 27% of its volume traded inside multi-leg orders.

Open in replayThe session's levels

Top volume

The ten contracts with the most contracts traded. The tape holds 22 expiries this session, Oct 28 to Nov 27.

#ContractExpiryDTEVolumeOIVol/OIPremiumMulti-leg
17750 COct 280120,4692,53447.5x$74.1M27%
27740 COct 280106,2951,51070.4x$111.8M24%
37745 COct 28099,6091,26578.7x$73.4M27%
47730 POct 28098,760894110x$103.0M27%
57725 POct 28092,7212,69334.4x$91.7M33%
67770 COct 28091,7636,99513.1x$33.0M26%
77735 POct 28088,200861102x$99.4M23%
87700 POct 28082,7172,82829.2x$35.0M25%
97735 COct 28080,8981,41557.2x$108.1M31%
107720 POct 28078,3931,38156.8x$61.1M26%

Top premium

The ten contracts with the most dollars traded.

#ContractExpiryDTEVolumeOIVol/OIPremiumMulti-leg
17000 CNov 24192,50030–$191.3M100%
27000 CNov 13122,5011,1762.13x$188.2M100%
37740 COct 280106,2951,51070.4x$111.8M24%
47735 COct 28080,8981,41557.2x$108.1M31%
57730 POct 28098,760894110x$103.0M27%
67735 POct 28088,200861102x$99.4M23%
77730 COct 28061,1712,57223.8x$99.0M29%
87725 POct 28092,7212,69334.4x$91.7M33%
97750 COct 280120,4692,53447.5x$74.1M27%
107745 COct 28099,6091,26578.7x$73.4M27%

Top open interest

The largest morning open interest across the whole SPX chain, traded today or not.

#ContractExpiryDTEVolumeOIVol/OIPremiumMulti-leg
17000 P AMDec 1837–406,690–––
27000 C AMDec 1837–393,238–––
38000 C AMDec 1837–329,257–––
48000 P AMDec 1837–312,632–––
57000 P AMMar 19102–165,949–––
67000 C AMMar 19102–154,451–––
76000 P AMDec 1837–152,928–––
87000 P AMJan 1557–145,149–––
97000 P AMDec 17297–143,127–––
108000 C AMMar 19102–142,359–––

Unusual Vol/OI

Volume against the morning open interest, for contracts with 1,000 or more traded.

#ContractExpiryDTEVolumeOIVol/OIPremiumMulti-leg
17745 POct 28039,638199199x$48.8M23%
27740 POct 28071,909387186x$72.6M20%
37730 POct 28098,760894110x$103.0M27%
47735 POct 28088,200861102x$99.4M23%
57715 POct 28061,66165694.0x$41.6M32%
67745 COct 28099,6091,26578.7x$73.4M27%
77705 POct 28040,73453076.9x$20.7M30%
87740 COct 280106,2951,51070.4x$111.8M24%
97755 POct 2809,82815065.5x$22.4M28%
107735 COct 28080,8981,41557.2x$108.1M31%

Structure mix of the 7750 C 0DTE

How the day's most traded contract printed: alone, or as one leg of a multi-leg order, by shape.

StructureContractsShare
single-leg prints88,30073%
vertical17,47815%
iron condor4,0033%
butterfly3,2633%
4-leg across expiries2,3052%
straddle844<1%
diagonal780<1%
other multi-leg3,4963%

How these are counted

Every SPX and SPXW option print of the session, from the options tape, summed per contract. Premium is each print's price times its size times 100, added up. Open interest is the count published before the open (the morning open interest), so Vol/OI is the day's volume against the contracts that were open when it began, shown only where that open interest is 50 or more. Unusual Vol/OI ranks contracts with at least 1,000 contracts traded. Multi-leg is the share of a contract's volume that printed together with other legs at the same timestamp, grouped and named by shape the way the order ledger names them. Every number is a count of contracts or of dollars; none of them carries a side or a direction.