# Biggest options open interest changes

OI settled 2026-09-02 vs 2026-09-01.

> Open interest change, not trades; it does not say which side opened or closed.

Source: SquawkFlow's own nightly archive of Cboe settled open interest. Updates once per session. Figures are contracts, not dollars: the archive holds no option prices.

1 of 212 archived US symbols compared. The other 211 lacked a consecutive settlement pair in the archive for these two sessions.

Across the compared symbols: 7,241 contracts changed open interest, +575,573 added, -68,623 removed, net +506,950 contracts.

## Largest open interest increases (contracts)

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SPX | 2026-09-09 | 7,825 | call | 389 | 18,522 | +18,133 |
| SPX | 2026-09-03 | 7,775 | call | 496 | 13,357 | +12,861 |
| SPX | 2026-09-03 | 7,875 | call | 551 | 8,410 | +7,859 |
| SPX | 2026-09-11 | 7,825 | call | 976 | 8,278 | +7,302 |
| SPX | 2026-09-08 | 7,460 | put | 282 | 6,251 | +5,969 |
| SPX | 2026-09-08 | 7,450 | put | 3,605 | 9,508 | +5,903 |
| SPX | 2026-09-03 | 7,860 | call | 524 | 6,168 | +5,644 |
| SPX | 2026-11-04 | 8,800 | call | 2 | 5,502 | +5,500 |
| SPX | 2026-11-04 | 8,500 | call | 1 | 5,501 | +5,500 |
| SPX | 2027-01-15 | 8,000 | call | 26,887 | 32,351 | +5,464 |
| SPX | 2026-09-03 | 7,435 | put | 107 | 5,567 | +5,460 |
| SPX | 2027-06-17 | 800 | put | 11,650 | 16,973 | +5,323 |
| SPX | 2026-09-03 | 7,785 | call | 507 | 5,445 | +4,938 |
| SPX | 2027-01-15 | 8,000 | put | 21,550 | 26,446 | +4,896 |
| SPX | 2027-01-15 | 7,000 | call | 44,747 | 49,595 | +4,848 |
| SPX | 2026-09-03 | 7,780 | call | 261 | 5,042 | +4,781 |
| SPX | 2026-09-03 | 7,350 | put | 682 | 5,456 | +4,774 |
| SPX | 2026-11-20 | 8,000 | put | 16,961 | 21,734 | +4,773 |
| SPX | 2027-01-15 | 7,000 | put | 48,356 | 53,044 | +4,688 |
| SPX | 2026-11-20 | 8,400 | call | 2,422 | 6,916 | +4,494 |

## Largest open interest decreases (contracts)

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SPX | 2026-09-18 | 7,000 | put | 349,207 | 345,412 | -3,795 |
| SPX | 2026-09-18 | 8,000 | call | 281,013 | 277,370 | -3,643 |
| SPX | 2026-09-18 | 8,000 | put | 266,816 | 263,451 | -3,365 |
| SPX | 2026-09-18 | 7,000 | call | 334,770 | 331,895 | -2,875 |
| SPX | 2026-09-18 | 7,850 | call | 17,259 | 15,112 | -2,147 |
| SPX | 2026-09-03 | 7,490 | put | 6,620 | 4,487 | -2,133 |
| SPX | 2026-12-18 | 7,125 | put | 10,231 | 8,233 | -1,998 |
| SPX | 2026-12-18 | 6,600 | put | 34,855 | 32,949 | -1,906 |
| SPX | 2026-09-18 | 7,635 | call | 6,282 | 5,254 | -1,028 |
| SPX | 2026-09-18 | 7,635 | put | 6,079 | 5,088 | -991 |
| SPX | 2026-10-02 | 8,150 | call | 1,683 | 738 | -945 |
| SPX | 2026-09-04 | 6,800 | put | 23,524 | 22,771 | -753 |
| SPX | 2026-12-18 | 7,500 | put | 31,994 | 31,262 | -732 |
| SPX | 2026-12-18 | 7,900 | call | 23,514 | 22,794 | -720 |
| SPX | 2026-09-30 | 7,250 | put | 4,380 | 3,661 | -719 |
| SPX | 2026-09-30 | 7,200 | put | 8,565 | 7,872 | -693 |
| SPX | 2026-09-03 | 7,500 | put | 6,793 | 6,131 | -662 |
| SPX | 2026-09-11 | 7,050 | put | 5,810 | 5,161 | -649 |
| SPX | 2026-09-11 | 7,710 | put | 1,985 | 1,360 | -625 |
| SPX | 2026-09-04 | 7,625 | call | 1,450 | 849 | -601 |

## Index ETFs (SPY, QQQ, IWM, DIA)

Increases:

None in this pair.

Decreases:

None in this pair.

## Single stocks

Increases:

None in this pair.

Decreases:

None in this pair.

## Calls vs puts

| Type | Added | Removed | Net |
|---|---|---|---|
| Calls | +269,766 | -24,909 | +244,857 |
| Puts | +305,807 | -43,714 | +262,093 |

## Biggest percent changes

Percent changes only for contracts with at least 1,000 prior open interest.

Increases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change | Change % |
|---|---|---|---|---|---|---|---|
| SPX | 2026-09-03 | 7,720 | call | 1,244 | 5,150 | +3,906 | +314% |
| SPX | 2026-09-03 | 7,600 | put | 1,122 | 3,704 | +2,582 | +230.1% |
| SPX | 2026-09-03 | 7,700 | call | 1,254 | 3,695 | +2,441 | +194.7% |
| SPX | 2026-11-20 | 8,400 | call | 2,422 | 6,916 | +4,494 | +185.5% |
| SPX | 2026-09-03 | 7,475 | put | 1,850 | 5,230 | +3,380 | +182.7% |
| SPX | 2026-09-03 | 7,625 | put | 1,189 | 3,177 | +1,988 | +167.2% |
| SPX | 2026-09-08 | 7,450 | put | 3,605 | 9,508 | +5,903 | +163.7% |
| SPX | 2026-09-03 | 7,450 | put | 2,729 | 7,071 | +4,342 | +159.1% |
| SPX | 2026-09-03 | 7,520 | put | 1,252 | 2,867 | +1,615 | +129% |
| SPX | 2027-06-17 | 1,400 | put | 1,811 | 4,091 | +2,280 | +125.9% |
| SPX | 2026-09-03 | 7,740 | call | 1,733 | 3,632 | +1,899 | +109.6% |
| SPX | 2026-09-03 | 7,525 | put | 1,289 | 2,612 | +1,323 | +102.6% |
| SPX | 2026-09-03 | 7,800 | call | 1,204 | 2,373 | +1,169 | +97.1% |
| SPX | 2026-09-30 | 7,850 | call | 2,835 | 5,405 | +2,570 | +90.7% |
| SPX | 2026-09-03 | 7,750 | call | 2,123 | 3,813 | +1,690 | +79.6% |
| SPX | 2026-09-04 | 7,575 | put | 1,568 | 2,740 | +1,172 | +74.7% |
| SPX | 2026-09-03 | 7,425 | put | 3,291 | 5,734 | +2,443 | +74.2% |
| SPX | 2026-09-08 | 8,100 | call | 3,245 | 5,459 | +2,214 | +68.2% |
| SPX | 2026-09-03 | 7,650 | put | 1,191 | 1,967 | +776 | +65.2% |
| SPX | 2026-10-16 | 7,320 | put | 1,026 | 1,673 | +647 | +63.1% |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change | Change % |
|---|---|---|---|---|---|---|---|
| SPX | 2026-10-02 | 8,150 | call | 1,683 | 738 | -945 | -56.1% |
| SPX | 2026-09-11 | 7,610 | put | 1,100 | 596 | -504 | -45.8% |
| SPX | 2026-09-04 | 7,625 | call | 1,450 | 849 | -601 | -41.4% |
| SPX | 2026-09-03 | 7,490 | put | 6,620 | 4,487 | -2,133 | -32.2% |
| SPX | 2026-09-11 | 7,710 | put | 1,985 | 1,360 | -625 | -31.5% |
| SPX | 2027-02-19 | 5,650 | put | 1,776 | 1,376 | -400 | -22.5% |
| SPX | 2026-10-16 | 7,720 | put | 1,075 | 845 | -230 | -21.4% |
| SPX | 2026-12-18 | 7,125 | put | 10,231 | 8,233 | -1,998 | -19.5% |
| SPX | 2026-10-16 | 8,275 | call | 3,134 | 2,579 | -555 | -17.7% |
| SPX | 2026-09-04 | 7,745 | call | 1,866 | 1,555 | -311 | -16.7% |
| SPX | 2026-09-18 | 7,635 | call | 6,282 | 5,254 | -1,028 | -16.4% |
| SPX | 2026-09-30 | 7,250 | put | 4,380 | 3,661 | -719 | -16.4% |
| SPX | 2026-09-18 | 7,635 | put | 6,079 | 5,088 | -991 | -16.3% |
| SPX | 2026-09-11 | 7,300 | put | 2,655 | 2,238 | -417 | -15.7% |
| SPX | 2027-09-17 | 10,200 | call | 2,129 | 1,817 | -312 | -14.7% |
| SPX | 2026-09-09 | 7,750 | call | 1,483 | 1,271 | -212 | -14.3% |
| SPX | 2026-09-11 | 7,200 | put | 1,402 | 1,213 | -189 | -13.5% |
| SPX | 2026-09-18 | 7,850 | call | 17,259 | 15,112 | -2,147 | -12.4% |
| SPX | 2026-09-25 | 7,600 | put | 1,189 | 1,050 | -139 | -11.7% |
| SPX | 2026-09-11 | 7,050 | put | 5,810 | 5,161 | -649 | -11.2% |

## Top strikes, summed across expirations

| Symbol | Strike | Type | Change | Expirations summed |
|---|---|---|---|---|
| SPX | 7,825 | call | +26,891 | 32 |
| SPX | 7,775 | call | +16,866 | 27 |
| SPX | 7,000 | put | +12,540 | 44 |
| SPX | 8,000 | call | +11,483 | 43 |
| SPX | 8,000 | put | +11,405 | 21 |
| SPX | 7,450 | put | +11,095 | 37 |
| SPX | 7,000 | call | +8,647 | 18 |
| SPX | 7,875 | call | +8,235 | 24 |
| SPX | 7,435 | put | +7,208 | 11 |
| SPX | 7,780 | call | +7,024 | 23 |
| SPX | 7,475 | put | +7,006 | 31 |
| SPX | 7,650 | put | +6,587 | 43 |
| SPX | 7,860 | call | +6,547 | 20 |
| SPX | 7,460 | put | +6,546 | 20 |
| SPX | 8,500 | call | +6,354 | 19 |
| SPX | 7,600 | put | +6,326 | 38 |
| SPX | 7,350 | put | +6,213 | 36 |
| SPX | 7,785 | call | +5,825 | 18 |
| SPX | 8,800 | call | +5,763 | 7 |
| SPX | 8,100 | call | +5,637 | 39 |

## Symbols by net change

Largest net increases:

| Symbol | Net change | Calls | Puts |
|---|---|---|---|
| SPX | +506,950 | +244,857 | +262,093 |

Largest net decreases:

None in this pair.

## Archive

- https://squawkflow.com/oi-changes/2026-10-08.md (2026-10-08 vs 2026-10-07, 158 symbols)
- https://squawkflow.com/oi-changes/2026-10-07.md (2026-10-07 vs 2026-10-06, 135 symbols)
- https://squawkflow.com/oi-changes/2026-10-06.md (2026-10-06 vs 2026-10-05, 136 symbols)
- https://squawkflow.com/oi-changes/2026-10-05.md (2026-10-05 vs 2026-10-02, 155 symbols)
- https://squawkflow.com/oi-changes/2026-10-02.md (2026-10-02 vs 2026-10-01, 148 symbols)
- https://squawkflow.com/oi-changes/2026-10-01.md (2026-10-01 vs 2026-09-30, 156 symbols)
- https://squawkflow.com/oi-changes/2026-09-30.md (2026-09-30 vs 2026-09-29, 148 symbols)
- https://squawkflow.com/oi-changes/2026-09-29.md (2026-09-29 vs 2026-09-28, 150 symbols)
- https://squawkflow.com/oi-changes/2026-09-28.md (2026-09-28 vs 2026-09-25, 150 symbols)
- https://squawkflow.com/oi-changes/2026-09-25.md (2026-09-25 vs 2026-09-24, 135 symbols)

SPX open interest change by strike: https://squawkflow.com/oi-change.md

Canonical: https://squawkflow.com/oi-changes/2026-09-02