Most active SPX options / Mon Oct 5 2026

Most active SPX options on Monday, October 5, 2026

On Mon Oct 5 2026 the most traded SPX option was the 7780 C 0DTE: 234,284 contracts, $75.8M premium, 165x its morning open interest; 46% 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 1 expiry this session, Oct 5 to Oct 5.

#ContractExpiryDTEVolumeOIVol/OIPremiumMulti-leg
17780 COct 50234,2841,420165x$75.8M46%
27785 COct 50192,5872,45578.4x$48.7M49%
37775 COct 50175,4691,682104x$64.4M35%
47790 COct 50170,0981,678101x$32.2M49%
57770 POct 50157,261313502x$47.1M23%
67770 COct 50155,6263,49044.6x$77.8M37%
77775 POct 50129,227216598x$45.3M21%
87780 POct 50109,165130840x$44.1M20%
97795 COct 50106,9561,29482.7x$15.0M48%
107800 COct 50103,7175,69318.2x$7.66M42%

Top premium

The ten contracts with the most dollars traded.

#ContractExpiryDTEVolumeOIVol/OIPremiumMulti-leg
17750 COct 5064,7943,68617.6x$78.4M32%
27770 COct 50155,6263,49044.6x$77.8M37%
37760 COct 50103,1821,03399.9x$76.7M28%
47780 COct 50234,2841,420165x$75.8M46%
57755 COct 5073,1161,32255.3x$68.2M29%
67775 COct 50175,4691,682104x$64.4M35%
77765 COct 5093,7422,40738.9x$58.6M31%
87750 POct 5096,9911,58461.2x$49.6M32%
97785 COct 50192,5872,45578.4x$48.7M49%
107740 COct 5032,77193035.2x$48.5M30%

Top open interest

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

#ContractExpiryDTEVolumeOIVol/OIPremiumMulti-leg
17000 P AMDec 1854–336,768–––
28000 C AMDec 1854–316,352–––
37000 C AMDec 1854–312,789–––
48000 P AMDec 1854–290,442–––
57000 P AMOct 169–223,776–––
68000 C AMOct 169–213,252–––
77000 C AMOct 169–205,515–––
88000 P AMOct 169–201,376–––
96000 P AMDec 1854–153,881–––
106000 C AMDec 1854–133,191–––

Unusual Vol/OI

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

#ContractExpiryDTEVolumeOIVol/OIPremiumMulti-leg
17765 POct 5088,694104853x$30.7M33%
27780 POct 50109,165130840x$44.1M20%
37775 POct 50129,227216598x$45.3M21%
47770 POct 50157,261313502x$47.1M23%
57790 POct 5038,93197401x$29.4M21%
67755 POct 5079,170207382x$41.5M34%
77745 POct 5062,078181343x$28.8M39%
87760 POct 5090,113398226x$41.0M33%
97780 COct 50234,2841,420165x$75.8M46%
107735 POct 5058,389358163x$27.3M40%

Structure mix of the 7780 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 prints125,68154%
vertical79,52234%
iron condor12,6325%
butterfly4,6972%
ratio vertical1,750<1%
3-leg ladder1,623<1%
one leg on file1,455<1%
other multi-leg6,9243%

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.