Most active SPX options / Mon Oct 19 2026

Most active SPX options on Monday, October 19, 2026

On Mon Oct 19 2026 the most traded SPX option was the 7700 P 0DTE: 196,904 contracts, $119.1M premium, 51.8x its morning open interest; 24% 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 19 to Nov 17.

#ContractExpiryDTEVolumeOIVol/OIPremiumMulti-leg
17700 POct 190196,9043,80351.8x$119.1M24%
27710 COct 190173,6071,501116x$83.8M22%
37690 POct 190156,2711,365114x$63.4M27%
47695 POct 190154,8241,254123x$75.1M26%
57705 COct 190141,7571,61587.8x$84.1M25%
67700 COct 190136,8624,68029.2x$108.0M28%
77715 COct 190119,8951,71070.1x$51.5M27%
87720 COct 190116,6221,81664.2x$50.2M30%
97705 POct 190112,330584192x$80.4M22%
107730 COct 19094,9581,03791.6x$35.4M31%

Top premium

The ten contracts with the most dollars traded.

#ContractExpiryDTEVolumeOIVol/OIPremiumMulti-leg
17700 POct 190196,9043,80351.8x$119.1M24%
27700 COct 190136,8624,68029.2x$108.0M28%
37705 COct 190141,7571,61587.8x$84.1M25%
47710 COct 190173,6071,501116x$83.8M22%
57705 POct 190112,330584192x$80.4M22%
67710 POct 19078,09185691.2x$77.2M24%
77695 POct 190154,8241,254123x$75.1M26%
87690 POct 190156,2711,365114x$63.4M27%
97715 POct 19043,8861,40331.3x$55.2M31%
107695 COct 19058,78661695.4x$54.6M27%

Top open interest

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

#ContractExpiryDTEVolumeOIVol/OIPremiumMulti-leg
17000 P AMDec 1844–364,673–––
27000 C AMDec 1844–346,399–––
38000 C AMDec 1844–317,007–––
48000 P AMDec 1844–297,115–––
57000 P AMMar 19109–155,762–––
66000 P AMDec 1844–152,456–––
77000 C AMMar 19109–142,949–––
87000 P AMJan 1564–141,280–––
97000 C AMJan 1564–134,803–––
108000 C AMMar 19109–132,616–––

Unusual Vol/OI

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

#ContractExpiryDTEVolumeOIVol/OIPremiumMulti-leg
17705 POct 190112,330584192x$80.4M22%
27695 POct 190154,8241,254123x$75.1M26%
37710 COct 190173,6071,501116x$83.8M22%
47690 POct 190156,2711,365114x$63.4M27%
57695 COct 19058,78661695.4x$54.6M27%
67730 COct 19094,9581,03791.6x$35.4M31%
77710 POct 19078,09185691.2x$77.2M24%
87705 COct 190141,7571,61587.8x$84.1M25%
97715 COct 190119,8951,71070.1x$51.5M27%
107685 POct 19094,1441,41666.5x$32.1M32%

Structure mix of the 7700 P 0DTE

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

StructureContractsShare
single-leg prints148,76676%
vertical26,62014%
iron condor8,0304%
butterfly3,8452%
straddle1,424<1%
3-leg ladder1,097<1%
ratio vertical1,052<1%
other multi-leg6,0703%

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.