Most active SPX options / Tue Oct 20 2026
Most active SPX options on Tuesday, October 20, 2026
On Tue Oct 20 2026 the most traded SPX option was the 7700 P 0DTE: 184,391 contracts, $66.1M premium, 57.4x its morning open interest; 28% of its volume traded inside multi-leg orders.
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Top volume
The ten contracts with the most contracts traded. The tape holds 22 expiries this session, Oct 20 to Nov 18.
| # | Contract | Expiry | DTE | Volume | OI | Vol/OI | Premium | Multi-leg |
|---|---|---|---|---|---|---|---|---|
| 1 | 7700 P | Oct 20 | 0 | 184,391 | 3,214 | 57.4x | $66.1M | 28% |
| 2 | 7710 P | Oct 20 | 0 | 182,892 | 1,721 | 106x | $88.1M | 22% |
| 3 | 7720 C | Oct 20 | 0 | 172,550 | 1,340 | 129x | $99.5M | 25% |
| 4 | 7730 C | Oct 20 | 0 | 143,048 | 4,045 | 35.4x | $67.3M | 32% |
| 5 | 7715 C | Oct 20 | 0 | 141,454 | 688 | 206x | $79.0M | 24% |
| 6 | 7725 C | Oct 20 | 0 | 137,999 | 2,067 | 66.8x | $70.2M | 28% |
| 7 | 7705 P | Oct 20 | 0 | 136,667 | 1,208 | 113x | $49.3M | 25% |
| 8 | 7715 P | Oct 20 | 0 | 114,629 | 958 | 120x | $78.6M | 22% |
| 9 | 7740 C | Oct 20 | 0 | 113,534 | 2,211 | 51.3x | $50.6M | 40% |
| 10 | 7735 C | Oct 20 | 0 | 111,712 | 4,232 | 26.4x | $45.9M | 43% |
Top premium
The ten contracts with the most dollars traded.
| # | Contract | Expiry | DTE | Volume | OI | Vol/OI | Premium | Multi-leg |
|---|---|---|---|---|---|---|---|---|
| 1 | 7720 C | Oct 20 | 0 | 172,550 | 1,340 | 129x | $99.5M | 25% |
| 2 | 7720 P | Oct 20 | 0 | 108,473 | 806 | 135x | $91.1M | 22% |
| 3 | 7710 P | Oct 20 | 0 | 182,892 | 1,721 | 106x | $88.1M | 22% |
| 4 | 7710 C | Oct 20 | 0 | 106,094 | 1,202 | 88.3x | $79.2M | 26% |
| 5 | 7715 C | Oct 20 | 0 | 141,454 | 688 | 206x | $79.0M | 24% |
| 6 | 7715 P | Oct 20 | 0 | 114,629 | 958 | 120x | $78.6M | 22% |
| 7 | 7725 C | Oct 20 | 0 | 137,999 | 2,067 | 66.8x | $70.2M | 28% |
| 8 | 7730 C | Oct 20 | 0 | 143,048 | 4,045 | 35.4x | $67.3M | 32% |
| 9 | 7700 P | Oct 20 | 0 | 184,391 | 3,214 | 57.4x | $66.1M | 28% |
| 10 | 7700 C | Oct 20 | 0 | 38,612 | 2,110 | 18.3x | $60.4M | 34% |
Top open interest
The largest morning open interest across the whole SPX chain, traded today or not.
| # | Contract | Expiry | DTE | Volume | OI | Vol/OI | Premium | Multi-leg |
|---|---|---|---|---|---|---|---|---|
| 1 | 7000 P AM | Dec 18 | 43 | – | 366,686 | – | – | – |
| 2 | 7000 C AM | Dec 18 | 43 | – | 349,613 | – | – | – |
| 3 | 8000 C AM | Dec 18 | 43 | – | 318,422 | – | – | – |
| 4 | 8000 P AM | Dec 18 | 43 | – | 296,903 | – | – | – |
| 5 | 7000 P AM | Mar 19 | 108 | – | 161,119 | – | – | – |
| 6 | 6000 P AM | Dec 18 | 43 | – | 152,132 | – | – | – |
| 7 | 7000 C AM | Mar 19 | 108 | – | 147,070 | – | – | – |
| 8 | 7000 P AM | Jan 15 | 63 | – | 142,028 | – | – | – |
| 9 | 7000 C AM | Jan 15 | 63 | – | 135,585 | – | – | – |
| 10 | 8000 C AM | Mar 19 | 108 | – | 133,047 | – | – | – |
Unusual Vol/OI
Volume against the morning open interest, for contracts with 1,000 or more traded.
| # | Contract | Expiry | DTE | Volume | OI | Vol/OI | Premium | Multi-leg |
|---|---|---|---|---|---|---|---|---|
| 1 | 7715 C | Oct 20 | 0 | 141,454 | 688 | 206x | $79.0M | 24% |
| 2 | 7720 P | Oct 20 | 0 | 108,473 | 806 | 135x | $91.1M | 22% |
| 3 | 7720 C | Oct 20 | 0 | 172,550 | 1,340 | 129x | $99.5M | 25% |
| 4 | 7715 P | Oct 20 | 0 | 114,629 | 958 | 120x | $78.6M | 22% |
| 5 | 7705 P | Oct 20 | 0 | 136,667 | 1,208 | 113x | $49.3M | 25% |
| 6 | 7710 P | Oct 20 | 0 | 182,892 | 1,721 | 106x | $88.1M | 22% |
| 7 | 7735 P | Oct 20 | 0 | 30,489 | 313 | 97.4x | $47.7M | 21% |
| 8 | 7710 C | Oct 20 | 0 | 106,094 | 1,202 | 88.3x | $79.2M | 26% |
| 9 | 6400 P | Nov 2 | 9 | 10,168 | 117 | 86.9x | $1.91M | <1% |
| 10 | 7745 C | Oct 20 | 0 | 77,423 | 1,099 | 70.4x | $31.4M | 40% |
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.
| Structure | Contracts | Share | ||
|---|---|---|---|---|
| single-leg prints | 133,652 | 72% | ||
| vertical | 30,326 | 16% | ||
| iron condor | 6,602 | 4% | ||
| butterfly | 6,052 | 3% | ||
| ratio vertical | 1,798 | <1% | ||
| 4-leg across expiries | 816 | <1% | ||
| condor or box | 799 | <1% | ||
| other multi-leg | 4,346 | 2% |
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.