Election 2026: what SPX options price for the Nov 4 session.Election 2026: what SPX options price

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RF Options Open Interest by Strike, Oct 21 Settlement

RF open interest settled 2026-10-21 vs 2026-10-20.

Source: SquawkFlow's archive of settled open interest. Counts are contracts, not trades; they do not identify which side opened or closed a position.

Computed from the Oct 21 settlement. Next update after the Oct 22 settlement, after 5:30 a.m. PT (8:30 a.m. ET) on Friday, Oct 23, 2026.

All archived unexpired expiration/strike/type keys, including unchanged counts. Series sharing that key are combined; roots and deliverables are not retained. Zero-OI keys omitted by the archive are not reconstructed.

This page shows the 6 nearest of 10 expirations, with the 40 strikes nearest the archived reference price (2026-10-21) for each, plus the largest changes across the whole book. The complete book, 224 expiration/strike/type keys, is in the Markdown table.

RF, 2026-10-21 settlement: call and put open interest by strike bucket, 6 nearest expirations18,4250Strikes 23 to 23, calls: 26 contracts, settled 2026-10-21Strikes 23 to 23, puts: 168 contracts, settled 2026-10-21Strikes 24 to 24, calls: 41 contracts, settled 2026-10-21Strikes 24 to 24, puts: 233 contracts, settled 2026-10-21Strikes 25 to 25, calls: 808 contracts, settled 2026-10-21Strikes 25 to 25, puts: 18,425 contracts, settled 2026-10-21Strikes 26 to 26, calls: 17 contracts, settled 2026-10-21Strikes 26 to 26, puts: 579 contracts, settled 2026-10-21Strikes 27 to 27, calls: 3,861 contracts, settled 2026-10-21Strikes 27 to 27, puts: 4,917 contracts, settled 2026-10-21Strikes 28 to 28, calls: 2,283 contracts, settled 2026-10-21Strikes 28 to 28, puts: 977 contracts, settled 2026-10-21Strikes 29 to 29, calls: 730 contracts, settled 2026-10-21Strikes 29 to 29, puts: 290 contracts, settled 2026-10-21Strikes 30 to 30, calls: 9,560 contracts, settled 2026-10-21Strikes 30 to 30, puts: 1,221 contracts, settled 2026-10-21Strikes 31 to 31, calls: 904 contracts, settled 2026-10-21Strikes 31 to 31, puts: 24 contracts, settled 2026-10-21Strikes 32 to 32, calls: 4,258 contracts, settled 2026-10-21Strikes 32 to 32, puts: 50 contracts, settled 2026-10-21Strikes 33 to 33, calls: 1,364 contracts, settled 2026-10-21Strikes 33 to 33, puts: 6 contracts, settled 2026-10-212234
Strike bucket on the horizontal axis, settled open contracts per bucket on the vertical axis. Calls in the accent color; puts in orange. Totals across the 6 nearest expirations, strikes from 22 to 34. Source: SquawkFlow's archive of settled open interest. Counts are contracts, not trades; they do not identify which side opened or closed a position.

RF: largest changes in the full book, settled 2026-10-21 vs 2026-10-20

StrikeExpiryTypePrior OISettled OIChange
2911/20call258344+86
3001/15call2,5462,595+49
3311/20call575533-42
2811/20call1,3141,344+30
2802/19call1935+16
3203/19call415430+15
2611/20put359350-9
3401/15call2331+8
3011/20call3,2503,256+6
2912/18call235241+6
2911/20put8783-4
3012/18call760756-4
3111/20call183186+3
3411/20call284281-3
3112/18call555557+2
Expiration 2026-11-20

RF open interest, settled 2026-10-21, expiration 2026-11-20, strikes 15 to 38

StrikeExpiryTypePrior OISettled OIChange
1511/20put110
1711/20put110
1811/20put42420
1911/20put11110
2011/20put220
2111/20call220
2111/20put330
2211/20call110
2211/20put29290
2311/20put35350
2411/20call36360
2411/20put7273+1
2511/20call550
2511/20put8,9348,933-1
2611/20call440
2611/20put359350-9
2711/20call7347340
2711/20put1,0961,0960
2811/20call1,3141,344+30
2811/20put49490
2911/20call258344+86
2911/20put8783-4
3011/20call3,2503,256+6
3011/20put38380
3111/20call183186+3
3211/20call4824820
3311/20call575533-42
3411/20call284281-3
3511/20call4324320
3611/20call1081080
3711/20call13130
3811/20call550
Expiration 2026-12-18

RF open interest, settled 2026-10-21, expiration 2026-12-18, strikes 13 to 40

StrikeExpiryTypePrior OISettled OIChange
1312/18put57570
1512/18put550
1812/18put41410
2012/18call110
2012/18put550
2112/18call10100
2112/18put10100
2212/18call440
2212/18put1521520
2312/18call17170
2312/18put25250
2412/18put25250
2512/18call80800
2512/18put6566+1
2612/18call330
2612/18put99100+1
2712/18call136135-1
2712/18put1221220
2812/18call292293+1
2812/18put1521520
2912/18call235241+6
2912/18put78780
3012/18call760756-4
3012/18put63630
3112/18call555557+2
3112/18put880
3212/18call5375370
3212/18put24240
3312/18call3223220
3412/18call45450
3512/18call6046040
3612/18call80800
3712/18call110
3812/18call14140
3912/18call110
4012/18call16160
Expiration 2027-01-15

RF open interest, settled 2026-10-21, expiration 2027-01-15, strikes 10 to 40

StrikeExpiryTypePrior OISettled OIChange
1001/15put44440
1301/15call110
1301/15put72720
1501/15call330
1501/15put72720
1801/15call26260
1801/15put7857850
2001/15call1021020
2001/15put2,2152,2150
2201/15call88880
2201/15put4,2844,2840
2301/15call440
2301/15put880
2401/15call550
2401/15put880
2501/15call6226220
2501/15put8,8978,8970
2601/15call550
2601/15put990
2701/15call2,8932,8930
2701/15put3,0323,0320
2801/15call2102100
2801/15put7297290
2901/15call59590
2901/15put88880
3001/15call2,5462,595+49
3001/15put6096090
3101/15call1051050
3101/15put14140
3201/15call2,7602,7600
3201/15put10100
3301/15call4024020
3301/15put440
3401/15call2331+8
3501/15call1,8021,8020
3501/15put770
3601/15call13130
3701/15call110
4001/15call2832830
Expiration 2027-02-19

RF open interest, settled 2026-10-21, expiration 2027-02-19, strikes 15 to 39

StrikeExpiryTypePrior OISettled OIChange
1502/19put110
2002/19put110
2102/19call15150
2102/19put220
2202/19put110
2402/19put1271270
2502/19put220
2602/19put1101100
2702/19call12+1
2702/19put32320
2802/19call1935+16
2802/19put35350
2902/19call330
2902/19put15150
3002/19call4194190
3002/19put15150
3102/19call36360
3102/19put110
3202/19call49490
3202/19put15150
3302/19call1071070
3402/19call11110
3502/19call10100
3902/19call110
Expiration 2027-03-19

RF open interest, settled 2026-10-21, expiration 2027-03-19, strikes 15 to 40

StrikeExpiryTypePrior OISettled OIChange
1503/19put96960
1803/19put4,0624,0620
2003/19put28280
2303/19call550
2303/19put1001000
2503/19call1011010
2503/19put5175170
2603/19call550
2603/19put10100
2703/19call95950
2703/19put6316310
2803/19call4014010
2803/19put12120
2903/19call82820
2903/19put16160
3003/19call2,5342,5340
3003/19put4964960
3103/19call20200
3103/19put110
3203/19call415430+15
3203/19put110
3303/19put220
3403/19call110
3503/19call29290
4003/19call330
Expiration 2027-05-21

RF open interest, settled 2026-10-21, expiration 2027-05-21, strikes 22 to 29

StrikeExpiryTypePrior OISettled OIChange
2205/21put02+2
2505/21put10100
2705/21call220
2705/21put440
2905/21call110
2905/21put10100

Later expirations (2027-06-17, 2027-09-17, 2028-01-21, 2029-01-19) and all other strikes are in the Markdown table.

Markdown table | Open interest changes across symbols