# Biggest options open interest changes

OI settled 2026-09-17 vs 2026-09-16.

> 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.

148 of 212 archived US symbols compared. The other 64 lacked a consecutive settlement pair in the archive for these two sessions. 9 of those compared reported an identical book in both sessions.

Across the compared symbols: 78,995 contracts changed open interest, +6,369,681 added, -2,367,492 removed, net +4,002,189 contracts.

## Largest open interest increases (contracts)

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| TLT | 2026-10-16 | 83 | call | 151,602 | 206,787 | +55,185 |
| TLT | 2026-10-16 | 82 | call | 52,675 | 90,094 | +37,419 |
| SPY | 2026-09-21 | 770 | call | 3,239 | 31,504 | +28,265 |
| TLT | 2026-10-23 | 83 | call | 1,143 | 26,403 | +25,260 |
| XLF | 2027-12-17 | 50 | put | 7,972 | 32,972 | +25,000 |
| NU | 2027-01-15 | 11 | put | 5,239 | 30,221 | +24,982 |
| XLF | 2027-01-15 | 50 | put | 65,721 | 90,528 | +24,807 |
| IWM | 2026-09-30 | 277 | put | 0 | 24,211 | +24,211 |
| NU | 2027-01-15 | 19 | call | 13,690 | 37,845 | +24,155 |
| IWM | 2026-10-16 | 271 | put | 44,623 | 68,770 | +24,147 |
| SPY | 2026-09-25 | 772 | call | 2,403 | 26,482 | +24,079 |
| INTC | 2026-09-18 | 112 | call | 2,468 | 24,850 | +22,382 |
| XLF | 2028-12-15 | 45 | put | 13,603 | 35,103 | +21,500 |
| CMG | 2026-11-20 | 27.5 | put | 0 | 20,025 | +20,025 |
| NVDA | 2026-09-25 | 105 | put | 1,744 | 20,669 | +18,925 |
| NVDA | 2026-09-25 | 222.5 | call | 3,754 | 22,326 | +18,572 |
| SPY | 2026-09-25 | 790 | call | 11,643 | 29,665 | +18,022 |
| QQQ | 2026-10-16 | 705 | put | 13,301 | 30,645 | +17,344 |
| SPY | 2026-10-16 | 724 | put | 12,716 | 29,473 | +16,757 |
| SPX | 2026-12-18 | 7,700 | put | 41,456 | 58,156 | +16,700 |

## Largest open interest decreases (contracts)

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| XLF | 2026-09-18 | 58 | put | 78,337 | 13,541 | -64,796 |
| IWM | 2026-09-18 | 290 | put | 77,423 | 32,747 | -44,676 |
| NU | 2026-10-16 | 12 | put | 69,129 | 31,836 | -37,293 |
| NU | 2026-10-16 | 18 | call | 55,459 | 18,907 | -36,552 |
| SPY | 2026-09-18 | 750 | call | 34,604 | 266 | -34,338 |
| SPY | 2026-09-18 | 730 | call | 29,777 | 31 | -29,746 |
| XLF | 2026-09-18 | 57 | put | 74,818 | 53,972 | -20,846 |
| SPY | 2026-09-18 | 755 | call | 24,095 | 4,257 | -19,838 |
| SPY | 2026-09-25 | 780 | call | 30,707 | 10,934 | -19,773 |
| IWM | 2026-09-18 | 293 | put | 19,397 | 108 | -19,289 |
| SPY | 2026-09-18 | 725 | call | 17,308 | 15 | -17,293 |
| IWM | 2026-10-16 | 270 | put | 76,112 | 59,163 | -16,949 |
| NVDA | 2026-09-25 | 220 | call | 41,145 | 24,299 | -16,846 |
| SPY | 2026-09-18 | 745 | call | 16,368 | 54 | -16,314 |
| QQQ | 2026-09-18 | 700 | put | 90,849 | 74,639 | -16,210 |
| SPY | 2026-09-18 | 720 | call | 17,007 | 1,020 | -15,987 |
| SPY | 2026-10-16 | 800 | call | 36,791 | 22,107 | -14,684 |
| SPY | 2026-09-18 | 715 | call | 12,853 | 15 | -12,838 |
| SPY | 2026-09-18 | 735 | call | 12,706 | 17 | -12,689 |
| NVDA | 2026-09-18 | 215 | call | 44,895 | 32,398 | -12,497 |

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

Increases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SPY | 2026-09-21 | 770 | call | 3,239 | 31,504 | +28,265 |
| IWM | 2026-09-30 | 277 | put | 0 | 24,211 | +24,211 |
| IWM | 2026-10-16 | 271 | put | 44,623 | 68,770 | +24,147 |
| SPY | 2026-09-25 | 772 | call | 2,403 | 26,482 | +24,079 |
| SPY | 2026-09-25 | 790 | call | 11,643 | 29,665 | +18,022 |
| QQQ | 2026-10-16 | 705 | put | 13,301 | 30,645 | +17,344 |
| SPY | 2026-10-16 | 724 | put | 12,716 | 29,473 | +16,757 |
| SPY | 2026-09-30 | 736 | put | 750 | 16,120 | +15,370 |
| SPY | 2026-09-28 | 780 | call | 404 | 15,717 | +15,313 |
| SPY | 2026-10-09 | 800 | call | 3,730 | 18,507 | +14,777 |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| IWM | 2026-09-18 | 290 | put | 77,423 | 32,747 | -44,676 |
| SPY | 2026-09-18 | 750 | call | 34,604 | 266 | -34,338 |
| SPY | 2026-09-18 | 730 | call | 29,777 | 31 | -29,746 |
| SPY | 2026-09-18 | 755 | call | 24,095 | 4,257 | -19,838 |
| SPY | 2026-09-25 | 780 | call | 30,707 | 10,934 | -19,773 |
| IWM | 2026-09-18 | 293 | put | 19,397 | 108 | -19,289 |
| SPY | 2026-09-18 | 725 | call | 17,308 | 15 | -17,293 |
| IWM | 2026-10-16 | 270 | put | 76,112 | 59,163 | -16,949 |
| SPY | 2026-09-18 | 745 | call | 16,368 | 54 | -16,314 |
| QQQ | 2026-09-18 | 700 | put | 90,849 | 74,639 | -16,210 |

## Single stocks

Increases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| NU | 2027-01-15 | 11 | put | 5,239 | 30,221 | +24,982 |
| NU | 2027-01-15 | 19 | call | 13,690 | 37,845 | +24,155 |
| INTC | 2026-09-18 | 112 | call | 2,468 | 24,850 | +22,382 |
| CMG | 2026-11-20 | 27.5 | put | 0 | 20,025 | +20,025 |
| NVDA | 2026-09-25 | 105 | put | 1,744 | 20,669 | +18,925 |
| NVDA | 2026-09-25 | 222.5 | call | 3,754 | 22,326 | +18,572 |
| HAL | 2026-10-16 | 40 | call | 1,856 | 17,234 | +15,378 |
| AAPL | 2026-09-18 | 342.5 | call | 8,851 | 23,995 | +15,144 |
| NVDA | 2026-10-16 | 235 | call | 37,328 | 51,173 | +13,845 |
| SNAP | 2026-10-16 | 7 | call | 19,001 | 32,380 | +13,379 |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| NU | 2026-10-16 | 12 | put | 69,129 | 31,836 | -37,293 |
| NU | 2026-10-16 | 18 | call | 55,459 | 18,907 | -36,552 |
| NVDA | 2026-09-25 | 220 | call | 41,145 | 24,299 | -16,846 |
| NVDA | 2026-09-18 | 215 | call | 44,895 | 32,398 | -12,497 |
| SOFI | 2026-09-18 | 19 | put | 16,198 | 4,049 | -12,149 |
| NVDA | 2026-09-18 | 220 | call | 77,947 | 67,402 | -10,545 |
| GE | 2026-12-18 | 400 | call | 14,132 | 3,704 | -10,428 |
| INTC | 2026-09-18 | 110 | call | 62,383 | 52,041 | -10,342 |
| SOFI | 2026-09-18 | 20 | put | 14,695 | 4,431 | -10,264 |
| PFE | 2026-09-18 | 28.5 | call | 19,396 | 9,468 | -9,928 |

## Calls vs puts

| Type | Added | Removed | Net |
|---|---|---|---|
| Calls | +3,136,410 | -1,193,591 | +1,942,819 |
| Puts | +3,233,271 | -1,173,901 | +2,059,370 |

## 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 % |
|---|---|---|---|---|---|---|---|
| TLT | 2026-10-23 | 83 | call | 1,143 | 26,403 | +25,260 | +2,210% |
| NVDA | 2026-09-25 | 105 | put | 1,744 | 20,669 | +18,925 | +1,085.1% |
| SPY | 2026-09-25 | 772 | call | 2,403 | 26,482 | +24,079 | +1,002% |
| INTC | 2026-09-18 | 112 | call | 2,468 | 24,850 | +22,382 | +906.9% |
| SPY | 2026-09-21 | 770 | call | 3,239 | 31,504 | +28,265 | +872.6% |
| HAL | 2026-10-16 | 40 | call | 1,856 | 17,234 | +15,378 | +828.6% |
| QQQ | 2026-10-02 | 725 | call | 1,336 | 11,487 | +10,151 | +759.8% |
| MSTR | 2026-09-25 | 70 | put | 1,613 | 13,317 | +11,704 | +725.6% |
| SPY | 2026-09-18 | 694 | put | 1,045 | 8,335 | +7,290 | +697.6% |
| UBER | 2026-10-16 | 62.5 | put | 1,422 | 11,164 | +9,742 | +685.1% |
| SPX | 2026-10-30 | 7,450 | put | 1,765 | 12,449 | +10,684 | +605.3% |
| MSTR | 2026-09-25 | 135 | call | 1,634 | 11,243 | +9,609 | +588.1% |
| INTC | 2026-09-18 | 111 | call | 1,298 | 8,536 | +7,238 | +557.6% |
| QQQ | 2026-09-18 | 716 | put | 1,842 | 11,950 | +10,108 | +548.8% |
| QQQ | 2026-09-21 | 710 | put | 1,371 | 8,841 | +7,470 | +544.9% |
| XLF | 2026-11-20 | 53 | put | 2,844 | 17,866 | +15,022 | +528.2% |
| INTC | 2027-04-16 | 65 | put | 1,238 | 7,465 | +6,227 | +503% |
| NVDA | 2026-09-25 | 222.5 | call | 3,754 | 22,326 | +18,572 | +494.7% |
| SPY | 2026-09-21 | 745 | put | 1,207 | 7,155 | +5,948 | +492.8% |
| NU | 2027-01-15 | 11 | put | 5,239 | 30,221 | +24,982 | +476.8% |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change | Change % |
|---|---|---|---|---|---|---|---|
| SPY | 2026-09-30 | 605 | call | 4,879 | 0 | -4,879 | -100% |
| SPY | 2026-09-18 | 515 | call | 3,352 | 0 | -3,352 | -100% |
| SPY | 2026-09-30 | 715 | call | 2,049 | 1 | -2,048 | -100% |
| SPY | 2026-09-30 | 599 | call | 1,699 | 0 | -1,699 | -100% |
| SPY | 2026-09-30 | 606 | call | 1,672 | 0 | -1,672 | -100% |
| SPY | 2026-09-30 | 721 | call | 1,376 | 0 | -1,376 | -100% |
| SPY | 2026-09-30 | 598 | call | 1,275 | 0 | -1,275 | -100% |
| SPY | 2026-09-30 | 708 | call | 1,271 | 0 | -1,271 | -100% |
| SPY | 2026-09-21 | 725 | call | 1,187 | 0 | -1,187 | -100% |
| SPY | 2026-09-25 | 715 | call | 1,079 | 0 | -1,079 | -100% |
| SPY | 2026-09-18 | 730 | call | 29,777 | 31 | -29,746 | -99.9% |
| SPY | 2026-09-18 | 725 | call | 17,308 | 15 | -17,293 | -99.9% |
| SPY | 2026-09-18 | 715 | call | 12,853 | 15 | -12,838 | -99.9% |
| SPY | 2026-09-18 | 735 | call | 12,706 | 17 | -12,689 | -99.9% |
| SPY | 2026-09-18 | 705 | call | 8,457 | 12 | -8,445 | -99.9% |
| SPY | 2026-09-18 | 600 | call | 5,119 | 4 | -5,115 | -99.9% |
| HBAN | 2026-09-18 | 18 | put | 3,068 | 4 | -3,064 | -99.9% |
| SPY | 2026-09-18 | 748 | call | 2,792 | 4 | -2,788 | -99.9% |
| SPY | 2026-09-18 | 749 | call | 2,602 | 3 | -2,599 | -99.9% |
| SPY | 2026-09-18 | 741 | call | 1,627 | 1 | -1,626 | -99.9% |

## Top strikes, summed across expirations

| Symbol | Strike | Type | Change | Expirations summed |
|---|---|---|---|---|
| TLT | 83 | call | +97,737 | 25 |
| XLF | 58 | put | -65,624 | 12 |
| TLT | 82 | call | +49,376 | 27 |
| XLF | 50 | put | +48,340 | 13 |
| IWM | 290 | put | -44,610 | 27 |
| SPY | 772 | call | +44,283 | 15 |
| SPX | 7,000 | put | +37,476 | 50 |
| NU | 12 | put | -37,018 | 10 |
| NU | 18 | call | -36,489 | 5 |
| SPX | 7,700 | call | +35,679 | 43 |
| SPY | 770 | call | +34,741 | 28 |
| SPY | 750 | call | -33,084 | 30 |
| NVDA | 225 | call | +32,295 | 24 |
| SPY | 730 | call | -31,181 | 21 |
| QQQ | 715 | put | +30,145 | 28 |
| NVDA | 222.5 | call | +29,205 | 7 |
| SPX | 8,000 | call | +28,911 | 49 |
| XLF | 53 | put | +28,884 | 11 |
| INTC | 120 | call | +27,583 | 23 |
| SPX | 7,700 | put | +27,572 | 41 |

## Symbols by net change

Largest net increases:

| Symbol | Net change | Calls | Puts |
|---|---|---|---|
| SPX | +845,493 | +349,609 | +495,884 |
| QQQ | +500,190 | +190,987 | +309,203 |
| SPY | +288,539 | -100,167 | +388,706 |
| INTC | +283,750 | +130,289 | +153,461 |
| NVDA | +259,684 | +136,625 | +123,059 |
| TLT | +222,576 | +212,251 | +10,325 |
| TSLA | +198,701 | +90,800 | +107,901 |
| AAPL | +143,889 | +84,457 | +59,432 |
| IWM | +119,668 | +65,444 | +54,224 |
| MU | +102,874 | +53,912 | +48,962 |

Largest net decreases:

| Symbol | Net change | Calls | Puts |
|---|---|---|---|
| XLE | -24,127 | -9,738 | -14,389 |
| NU | -15,317 | -2,051 | -13,266 |
| XLP | -11,026 | -474 | -10,552 |
| GE | -9,713 | -8,897 | -816 |
| CPNG | -6,225 | +2,004 | -8,229 |
| XLY | -5,229 | +903 | -6,132 |
| XLI | -2,757 | +1,462 | -4,219 |
| SE | -2,435 | +248 | -2,683 |
| KEY | -2,042 | -803 | -1,239 |
| BR | -662 | +43 | -705 |

## 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/2026-09-17