# Biggest options open interest changes

OI settled 2026-09-15 vs 2026-09-14.

> 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.

129 of 212 archived US symbols compared. The other 83 lacked a consecutive settlement pair in the archive for these two sessions. 3 of those compared reported an identical book in both sessions.

Across the compared symbols: 63,789 contracts changed open interest, +5,162,681 added, -942,829 removed, net +4,219,852 contracts.

## Largest open interest increases (contracts)

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SPY | 2026-09-16 | 718 | put | 397 | 53,308 | +52,911 |
| SPY | 2026-09-18 | 606 | put | 553 | 49,162 | +48,609 |
| XLF | 2027-06-17 | 45 | put | 6,923 | 54,347 | +47,424 |
| SPY | 2026-09-18 | 607 | put | 660 | 45,237 | +44,577 |
| SPY | 2026-12-18 | 800 | call | 23,011 | 66,703 | +43,692 |
| SPY | 2026-12-18 | 830 | call | 12,121 | 55,765 | +43,644 |
| IWM | 2026-10-16 | 271 | put | 6,138 | 42,684 | +36,546 |
| IWM | 2026-10-16 | 272 | put | 446 | 36,319 | +35,873 |
| SPY | 2026-09-25 | 730 | put | 2,297 | 35,915 | +33,618 |
| SPY | 2026-09-25 | 745 | put | 26,167 | 58,544 | +32,377 |
| SPY | 2026-09-18 | 745 | put | 39,259 | 66,648 | +27,389 |
| QQQ | 2026-09-18 | 685 | put | 37,543 | 61,768 | +24,225 |
| SNAP | 2026-09-18 | 6.5 | call | 6,017 | 29,398 | +23,381 |
| XLF | 2026-09-18 | 55 | put | 34,763 | 56,357 | +21,594 |
| GLD | 2026-12-18 | 490 | call | 7,098 | 27,624 | +20,526 |
| XLF | 2027-03-19 | 55 | call | 1,377 | 21,367 | +19,990 |
| SPY | 2026-09-18 | 760 | put | 107,149 | 127,008 | +19,859 |
| SPY | 2026-09-18 | 794 | call | 4,386 | 23,397 | +19,011 |
| SPY | 2026-09-18 | 793 | call | 9,475 | 28,416 | +18,941 |
| WMB | 2026-10-30 | 65 | put | 0 | 18,750 | +18,750 |

## Largest open interest decreases (contracts)

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SPY | 2026-09-18 | 750 | put | 134,795 | 113,782 | -21,013 |
| IWM | 2026-10-16 | 274 | put | 53,615 | 35,357 | -18,258 |
| QQQ | 2026-09-18 | 675 | put | 41,252 | 26,583 | -14,669 |
| IWM | 2026-09-18 | 300 | put | 21,312 | 7,070 | -14,242 |
| SPY | 2026-10-16 | 685 | put | 16,920 | 4,545 | -12,375 |
| SPX | 2026-09-18 | 8,000 | put | 299,130 | 287,506 | -11,624 |
| SPX | 2026-09-18 | 7,000 | put | 400,028 | 390,547 | -9,481 |
| ICE | 2026-09-18 | 145 | call | 9,236 | 89 | -9,147 |
| SPX | 2026-09-18 | 7,000 | call | 385,484 | 377,061 | -8,423 |
| SPX | 2026-09-18 | 7,500 | put | 89,004 | 80,837 | -8,167 |
| IWM | 2026-10-02 | 268 | put | 13,818 | 5,693 | -8,125 |
| IWM | 2026-10-02 | 280 | put | 15,141 | 7,100 | -8,041 |
| IWM | 2026-09-18 | 285 | put | 104,244 | 96,421 | -7,823 |
| IWM | 2026-09-30 | 290 | put | 41,912 | 34,310 | -7,602 |
| SPX | 2026-09-18 | 8,000 | call | 311,381 | 304,471 | -6,910 |
| TSLA | 2027-06-17 | 990 | call | 26,591 | 19,783 | -6,808 |
| QQQ | 2026-09-18 | 730 | put | 9,476 | 2,838 | -6,638 |
| IWM | 2026-09-18 | 298 | put | 6,976 | 1,191 | -5,785 |
| IWM | 2026-09-18 | 305 | put | 6,702 | 1,016 | -5,686 |
| QQQ | 2026-09-18 | 610 | put | 21,559 | 15,951 | -5,608 |

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

Increases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SPY | 2026-09-16 | 718 | put | 397 | 53,308 | +52,911 |
| SPY | 2026-09-18 | 606 | put | 553 | 49,162 | +48,609 |
| SPY | 2026-09-18 | 607 | put | 660 | 45,237 | +44,577 |
| SPY | 2026-12-18 | 800 | call | 23,011 | 66,703 | +43,692 |
| SPY | 2026-12-18 | 830 | call | 12,121 | 55,765 | +43,644 |
| IWM | 2026-10-16 | 271 | put | 6,138 | 42,684 | +36,546 |
| IWM | 2026-10-16 | 272 | put | 446 | 36,319 | +35,873 |
| SPY | 2026-09-25 | 730 | put | 2,297 | 35,915 | +33,618 |
| SPY | 2026-09-25 | 745 | put | 26,167 | 58,544 | +32,377 |
| SPY | 2026-09-18 | 745 | put | 39,259 | 66,648 | +27,389 |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SPY | 2026-09-18 | 750 | put | 134,795 | 113,782 | -21,013 |
| IWM | 2026-10-16 | 274 | put | 53,615 | 35,357 | -18,258 |
| QQQ | 2026-09-18 | 675 | put | 41,252 | 26,583 | -14,669 |
| IWM | 2026-09-18 | 300 | put | 21,312 | 7,070 | -14,242 |
| SPY | 2026-10-16 | 685 | put | 16,920 | 4,545 | -12,375 |
| IWM | 2026-10-02 | 268 | put | 13,818 | 5,693 | -8,125 |
| IWM | 2026-10-02 | 280 | put | 15,141 | 7,100 | -8,041 |
| IWM | 2026-09-18 | 285 | put | 104,244 | 96,421 | -7,823 |
| IWM | 2026-09-30 | 290 | put | 41,912 | 34,310 | -7,602 |
| QQQ | 2026-09-18 | 730 | put | 9,476 | 2,838 | -6,638 |

## Single stocks

Increases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SNAP | 2026-09-18 | 6.5 | call | 6,017 | 29,398 | +23,381 |
| WMB | 2026-10-30 | 65 | put | 0 | 18,750 | +18,750 |
| AAPL | 2026-09-16 | 335 | call | 8,252 | 18,277 | +10,025 |
| CSCO | 2026-12-18 | 135 | call | 2,140 | 12,071 | +9,931 |
| CVX | 2026-12-18 | 250 | call | 2,763 | 12,544 | +9,781 |
| AAPL | 2027-01-15 | 350 | call | 45,397 | 54,855 | +9,458 |
| AAPL | 2026-09-16 | 255 | put | 2,166 | 11,504 | +9,338 |
| GILD | 2026-11-20 | 165 | call | 562 | 8,712 | +8,150 |
| GOOGL | 2026-09-18 | 340 | put | 9,994 | 17,122 | +7,128 |
| INTC | 2026-09-18 | 104 | call | 2,211 | 8,299 | +6,088 |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| ICE | 2026-09-18 | 145 | call | 9,236 | 89 | -9,147 |
| TSLA | 2027-06-17 | 990 | call | 26,591 | 19,783 | -6,808 |
| INTC | 2026-09-18 | 115 | call | 25,771 | 20,454 | -5,317 |
| TSLA | 2027-06-17 | 650 | call | 32,150 | 27,077 | -5,073 |
| SNAP | 2027-01-15 | 6 | call | 33,459 | 29,307 | -4,152 |
| GRAB | 2026-10-02 | 3 | put | 9,700 | 5,990 | -3,710 |
| AAPL | 2026-09-21 | 340 | call | 8,787 | 5,226 | -3,561 |
| GOOGL | 2026-11-20 | 370 | call | 38,014 | 34,552 | -3,462 |
| GILD | 2026-09-18 | 140 | call | 3,465 | 82 | -3,383 |
| GOOGL | 2026-09-18 | 400 | call | 61,786 | 58,619 | -3,167 |

## Calls vs puts

| Type | Added | Removed | Net |
|---|---|---|---|
| Calls | +2,392,991 | -385,588 | +2,007,403 |
| Puts | +2,769,690 | -557,241 | +2,212,449 |

## 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 % |
|---|---|---|---|---|---|---|---|
| SPY | 2026-09-25 | 730 | put | 2,297 | 35,915 | +33,618 | +1,463.6% |
| XLF | 2027-03-19 | 55 | call | 1,377 | 21,367 | +19,990 | +1,451.7% |
| SPY | 2026-09-25 | 727 | put | 1,660 | 16,604 | +14,944 | +900.2% |
| XLU | 2027-01-15 | 42 | call | 1,018 | 8,863 | +7,845 | +770.6% |
| XLF | 2027-06-17 | 45 | put | 6,923 | 54,347 | +47,424 | +685% |
| XLF | 2026-09-30 | 56 | put | 2,227 | 16,962 | +14,735 | +661.7% |
| QQQ | 2026-09-16 | 724 | call | 1,178 | 8,797 | +7,619 | +646.8% |
| IWM | 2026-10-16 | 271 | put | 6,138 | 42,684 | +36,546 | +595.4% |
| SPY | 2026-09-30 | 809 | call | 1,134 | 7,567 | +6,433 | +567.3% |
| SPX | 2026-09-21 | 7,350 | put | 1,017 | 6,696 | +5,679 | +558.4% |
| SPY | 2026-09-18 | 792 | call | 1,963 | 12,525 | +10,562 | +538.1% |
| QQQ | 2026-09-17 | 680 | put | 1,030 | 6,012 | +4,982 | +483.7% |
| XLF | 2026-09-16 | 57 | put | 1,107 | 6,330 | +5,223 | +471.8% |
| CSCO | 2026-12-18 | 135 | call | 2,140 | 12,071 | +9,931 | +464.1% |
| SPX | 2026-11-20 | 8,450 | call | 1,347 | 7,567 | +6,220 | +461.8% |
| TLT | 2026-10-02 | 82 | call | 2,458 | 13,656 | +11,198 | +455.6% |
| SPX | 2026-09-16 | 6,200 | put | 1,242 | 6,900 | +5,658 | +455.6% |
| SPY | 2026-09-16 | 758 | call | 1,012 | 5,511 | +4,499 | +444.6% |
| SPY | 2026-09-18 | 794 | call | 4,386 | 23,397 | +19,011 | +433.4% |
| AAPL | 2026-09-16 | 255 | put | 2,166 | 11,504 | +9,338 | +431.1% |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change | Change % |
|---|---|---|---|---|---|---|---|
| IWM | 2026-09-16 | 298 | put | 1,193 | 0 | -1,193 | -100% |
| IWM | 2026-12-31 | 335 | put | 1,011 | 0 | -1,011 | -100% |
| IWM | 2026-09-16 | 299 | put | 1,293 | 1 | -1,292 | -99.9% |
| ROK | 2026-09-18 | 450 | put | 2,173 | 13 | -2,160 | -99.4% |
| ICE | 2026-09-18 | 145 | call | 9,236 | 89 | -9,147 | -99% |
| BKNG | 2026-09-18 | 195 | put | 1,102 | 21 | -1,081 | -98.1% |
| GILD | 2026-09-18 | 140 | call | 3,465 | 82 | -3,383 | -97.6% |
| GILD | 2026-09-18 | 135 | call | 1,793 | 64 | -1,729 | -96.4% |
| SHOP | 2026-09-18 | 155 | put | 1,126 | 46 | -1,080 | -95.9% |
| GILD | 2026-09-18 | 120 | call | 1,281 | 78 | -1,203 | -93.9% |
| SPY | 2026-09-16 | 770 | put | 1,932 | 132 | -1,800 | -93.2% |
| TTWO | 2026-09-18 | 240 | put | 1,427 | 185 | -1,242 | -87% |
| IWM | 2026-09-18 | 299 | put | 2,474 | 357 | -2,117 | -85.6% |
| IWM | 2026-09-18 | 305 | put | 6,702 | 1,016 | -5,686 | -84.8% |
| UNH | 2026-09-18 | 410 | put | 1,224 | 186 | -1,038 | -84.8% |
| IWM | 2026-09-18 | 298 | put | 6,976 | 1,191 | -5,785 | -82.9% |
| IWM | 2026-09-18 | 302 | put | 4,686 | 819 | -3,867 | -82.5% |
| COIN | 2026-09-18 | 230 | put | 2,376 | 514 | -1,862 | -78.4% |
| SPY | 2026-10-16 | 685 | put | 16,920 | 4,545 | -12,375 | -73.1% |
| HOOD | 2026-10-09 | 120 | call | 3,417 | 929 | -2,488 | -72.8% |

## Top strikes, summed across expirations

| Symbol | Strike | Type | Change | Expirations summed |
|---|---|---|---|---|
| SPY | 745 | put | +64,815 | 26 |
| SPY | 800 | call | +58,215 | 29 |
| SPY | 718 | put | +53,629 | 12 |
| SPY | 606 | put | +48,609 | 1 |
| XLF | 45 | put | +47,426 | 3 |
| TLT | 81 | call | +44,995 | 25 |
| SPY | 607 | put | +44,577 | 1 |
| SPY | 830 | call | +43,808 | 19 |
| IWM | 272 | put | +39,790 | 13 |
| SPY | 730 | put | +39,604 | 24 |
| IWM | 271 | put | +37,077 | 12 |
| QQQ | 685 | put | +31,339 | 24 |
| TLT | 90 | call | +29,167 | 22 |
| TLT | 82 | call | +29,126 | 22 |
| XLF | 55 | put | +28,706 | 16 |
| SPY | 735 | put | +27,323 | 27 |
| TLT | 84 | call | +26,390 | 23 |
| IWM | 275 | put | +25,209 | 24 |
| SNAP | 6.5 | call | +25,170 | 6 |
| SPX | 7,700 | call | +24,933 | 35 |

## Symbols by net change

Largest net increases:

| Symbol | Net change | Calls | Puts |
|---|---|---|---|
| SPY | +976,608 | +397,496 | +579,112 |
| SPX | +556,816 | +207,900 | +348,916 |
| QQQ | +504,629 | +200,439 | +304,190 |
| TLT | +269,437 | +211,463 | +57,974 |
| IWM | +247,555 | +78,538 | +169,017 |
| XLF | +166,591 | +52,181 | +114,410 |
| GLD | +138,036 | +106,587 | +31,449 |
| TSLA | +136,984 | +77,831 | +59,153 |
| XLE | +116,271 | +25,494 | +90,777 |
| INTC | +101,356 | +58,617 | +42,739 |

Largest net decreases:

| Symbol | Net change | Calls | Puts |
|---|---|---|---|
| ICE | -7,910 | -9,143 | +1,233 |
| TTWO | -2,531 | +1,312 | -3,843 |
| ROK | -1,882 | +181 | -2,063 |
| DASH | -277 | +175 | -452 |
| BNTX | -213 | -203 | -10 |
| TMO | -171 | -965 | +794 |
| RF | -105 | +37 | -142 |

## 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/2026-09-15