# Biggest options open interest changes

OI settled 2026-09-21 vs 2026-09-18.

> 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.

121 of 212 archived US symbols compared. The other 91 lacked a consecutive settlement pair in the archive for these two sessions. 2 of those compared reported an identical book in both sessions.

Across the compared symbols: 64,385 contracts changed open interest, +6,895,465 added, -990,335 removed, net +5,905,130 contracts.

## Largest open interest increases (contracts)

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| IWM | 2026-10-16 | 272 | put | 31,896 | 98,042 | +66,146 |
| SPY | 2026-10-09 | 785 | call | 1,549 | 67,155 | +65,606 |
| GLD | 2026-12-18 | 450 | call | 73,458 | 132,843 | +59,385 |
| GLD | 2026-12-18 | 485 | call | 58,282 | 111,546 | +53,264 |
| GLD | 2027-01-15 | 450 | call | 107,715 | 160,800 | +53,085 |
| GLD | 2027-01-15 | 485 | call | 65,928 | 118,283 | +52,355 |
| SHOP | 2026-12-18 | 145 | call | 340 | 43,646 | +43,306 |
| QQQ | 2026-10-16 | 775 | call | 6,052 | 45,272 | +39,220 |
| QQQ | 2026-09-30 | 720 | put | 3,963 | 33,475 | +29,512 |
| QQQ | 2026-09-30 | 730 | put | 3,210 | 32,455 | +29,245 |
| QQQ | 2026-10-02 | 715 | put | 3,674 | 32,050 | +28,376 |
| BKNG | 2026-12-18 | 150 | call | 437 | 28,523 | +28,086 |
| QQQ | 2026-10-16 | 760 | call | 8,330 | 35,550 | +27,220 |
| SPY | 2026-09-30 | 617 | put | 347 | 27,461 | +27,114 |
| TLT | 2028-01-21 | 115 | call | 12,702 | 38,425 | +25,723 |
| QQQ | 2026-10-02 | 725 | put | 390 | 26,028 | +25,638 |
| TLT | 2028-01-21 | 89 | call | 51,949 | 77,321 | +25,372 |
| SPY | 2026-09-30 | 638 | put | 132 | 25,239 | +25,107 |
| XLK | 2026-09-25 | 135 | put | 3 | 25,003 | +25,000 |
| SPY | 2026-09-22 | 775 | call | 2,195 | 27,110 | +24,915 |

## Largest open interest decreases (contracts)

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| INTC | 2026-10-16 | 110 | call | 77,754 | 55,147 | -22,607 |
| XLI | 2026-11-20 | 170 | put | 68,725 | 46,187 | -22,538 |
| SHOP | 2026-10-16 | 135 | call | 46,336 | 24,442 | -21,894 |
| BKNG | 2026-10-16 | 162.4 | call | 31,350 | 15,137 | -16,213 |
| INTC | 2026-11-20 | 70 | call | 73,191 | 58,174 | -15,017 |
| SPY | 2026-10-09 | 753 | put | 25,166 | 11,151 | -14,015 |
| IWM | 2026-09-30 | 275 | put | 72,572 | 60,403 | -12,169 |
| TLT | 2026-09-30 | 82 | call | 68,501 | 56,422 | -12,079 |
| TLT | 2027-06-17 | 75 | put | 75,002 | 63,003 | -11,999 |
| LCID | 2027-01-15 | 3 | put | 46,470 | 36,934 | -9,536 |
| IWM | 2026-10-16 | 275 | put | 94,237 | 84,802 | -9,435 |
| SPY | 2026-09-25 | 790 | call | 29,678 | 21,698 | -7,980 |
| INTC | 2026-09-25 | 115 | call | 14,767 | 7,737 | -7,030 |
| SPY | 2026-10-16 | 724 | put | 33,406 | 26,390 | -7,016 |
| SPY | 2026-09-30 | 736 | put | 15,181 | 8,741 | -6,440 |
| XLE | 2026-10-16 | 60 | put | 44,137 | 38,444 | -5,693 |
| QQQ | 2026-12-18 | 850 | call | 13,193 | 7,622 | -5,571 |
| QQQ | 2026-09-30 | 705 | put | 33,152 | 27,976 | -5,176 |
| LCID | 2027-01-15 | 6 | put | 12,954 | 7,956 | -4,998 |
| SPY | 2026-09-30 | 800 | call | 64,307 | 59,386 | -4,921 |

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

Increases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| IWM | 2026-10-16 | 272 | put | 31,896 | 98,042 | +66,146 |
| SPY | 2026-10-09 | 785 | call | 1,549 | 67,155 | +65,606 |
| QQQ | 2026-10-16 | 775 | call | 6,052 | 45,272 | +39,220 |
| QQQ | 2026-09-30 | 720 | put | 3,963 | 33,475 | +29,512 |
| QQQ | 2026-09-30 | 730 | put | 3,210 | 32,455 | +29,245 |
| QQQ | 2026-10-02 | 715 | put | 3,674 | 32,050 | +28,376 |
| QQQ | 2026-10-16 | 760 | call | 8,330 | 35,550 | +27,220 |
| SPY | 2026-09-30 | 617 | put | 347 | 27,461 | +27,114 |
| QQQ | 2026-10-02 | 725 | put | 390 | 26,028 | +25,638 |
| SPY | 2026-09-30 | 638 | put | 132 | 25,239 | +25,107 |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SPY | 2026-10-09 | 753 | put | 25,166 | 11,151 | -14,015 |
| IWM | 2026-09-30 | 275 | put | 72,572 | 60,403 | -12,169 |
| IWM | 2026-10-16 | 275 | put | 94,237 | 84,802 | -9,435 |
| SPY | 2026-09-25 | 790 | call | 29,678 | 21,698 | -7,980 |
| SPY | 2026-10-16 | 724 | put | 33,406 | 26,390 | -7,016 |
| SPY | 2026-09-30 | 736 | put | 15,181 | 8,741 | -6,440 |
| QQQ | 2026-12-18 | 850 | call | 13,193 | 7,622 | -5,571 |
| QQQ | 2026-09-30 | 705 | put | 33,152 | 27,976 | -5,176 |
| SPY | 2026-09-30 | 800 | call | 64,307 | 59,386 | -4,921 |
| QQQ | 2026-09-25 | 730 | call | 11,062 | 6,347 | -4,715 |

## Single stocks

Increases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SHOP | 2026-12-18 | 145 | call | 340 | 43,646 | +43,306 |
| BKNG | 2026-12-18 | 150 | call | 437 | 28,523 | +28,086 |
| CMG | 2026-10-30 | 27 | put | 21 | 18,117 | +18,096 |
| INTC | 2026-09-23 | 128 | call | 555 | 18,477 | +17,922 |
| INTC | 2026-09-25 | 110 | put | 2,102 | 16,959 | +14,857 |
| SHOP | 2026-10-16 | 145 | call | 1,591 | 13,449 | +11,858 |
| SOFI | 2026-09-25 | 17.5 | call | 11,396 | 21,685 | +10,289 |
| AAPL | 2026-09-23 | 340 | put | 1,490 | 11,510 | +10,020 |
| INTC | 2027-04-16 | 110 | put | 41 | 9,936 | +9,895 |
| GRAB | 2028-06-16 | 7 | call | 160 | 9,073 | +8,913 |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| INTC | 2026-10-16 | 110 | call | 77,754 | 55,147 | -22,607 |
| SHOP | 2026-10-16 | 135 | call | 46,336 | 24,442 | -21,894 |
| BKNG | 2026-10-16 | 162.4 | call | 31,350 | 15,137 | -16,213 |
| INTC | 2026-11-20 | 70 | call | 73,191 | 58,174 | -15,017 |
| LCID | 2027-01-15 | 3 | put | 46,470 | 36,934 | -9,536 |
| INTC | 2026-09-25 | 115 | call | 14,767 | 7,737 | -7,030 |
| LCID | 2027-01-15 | 6 | put | 12,954 | 7,956 | -4,998 |
| INTC | 2026-11-20 | 110 | call | 31,772 | 26,997 | -4,775 |
| INTC | 2026-10-30 | 125 | call | 13,328 | 8,771 | -4,557 |
| INTC | 2026-12-18 | 210 | call | 10,024 | 6,017 | -4,007 |

## Calls vs puts

| Type | Added | Removed | Net |
|---|---|---|---|
| Calls | +3,551,225 | -522,630 | +3,028,595 |
| Puts | +3,344,240 | -467,705 | +2,876,535 |

## 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 | 2026-10-09 | 785 | call | 1,549 | 67,155 | +65,606 | +4,235.4% |
| SPY | 2026-09-22 | 775 | call | 2,195 | 27,110 | +24,915 | +1,135.1% |
| XLI | 2026-10-16 | 160 | put | 1,418 | 15,594 | +14,176 | +999.7% |
| SPY | 2026-09-22 | 780 | call | 1,362 | 14,020 | +12,658 | +929.4% |
| SPY | 2026-09-22 | 774 | call | 1,145 | 11,764 | +10,619 | +927.4% |
| QQQ | 2026-09-25 | 635 | put | 1,554 | 15,815 | +14,261 | +917.7% |
| QQQ | 2026-09-30 | 730 | put | 3,210 | 32,455 | +29,245 | +911.1% |
| SPY | 2026-10-16 | 729 | put | 2,137 | 18,896 | +16,759 | +784.2% |
| QQQ | 2026-10-02 | 715 | put | 3,674 | 32,050 | +28,376 | +772.3% |
| QQQ | 2026-09-25 | 755 | call | 1,506 | 12,974 | +11,468 | +761.5% |
| SHOP | 2026-10-16 | 145 | call | 1,591 | 13,449 | +11,858 | +745.3% |
| QQQ | 2026-09-30 | 720 | put | 3,963 | 33,475 | +29,512 | +744.7% |
| INTC | 2026-09-25 | 110 | put | 2,102 | 16,959 | +14,857 | +706.8% |
| SPY | 2026-09-22 | 778 | call | 1,014 | 8,047 | +7,033 | +693.6% |
| QQQ | 2026-09-22 | 750 | call | 1,026 | 8,093 | +7,067 | +688.8% |
| AAPL | 2026-09-23 | 340 | put | 1,490 | 11,510 | +10,020 | +672.5% |
| SPX | 2027-02-19 | 800 | put | 1,050 | 8,004 | +6,954 | +662.3% |
| QQQ | 2026-10-16 | 775 | call | 6,052 | 45,272 | +39,220 | +648.1% |
| INTC | 2026-09-25 | 135 | call | 1,026 | 7,321 | +6,295 | +613.5% |
| QQQ | 2026-11-20 | 775 | call | 4,109 | 28,987 | +24,878 | +605.5% |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change | Change % |
|---|---|---|---|---|---|---|---|
| XLU | 2026-12-18 | 46 | put | 1,011 | 0 | -1,011 | -100% |
| XLU | 2026-09-25 | 43 | put | 3,053 | 365 | -2,688 | -88% |
| UPS | 2026-10-16 | 110 | put | 1,080 | 183 | -897 | -83.1% |
| QQQ | 2026-10-02 | 595 | put | 1,024 | 235 | -789 | -77.1% |
| XLU | 2027-01-15 | 47.5 | put | 2,963 | 816 | -2,147 | -72.5% |
| QQQ | 2026-10-09 | 702 | put | 4,943 | 1,418 | -3,525 | -71.3% |
| SPCE | 2026-09-25 | 2.5 | put | 2,208 | 638 | -1,570 | -71.1% |
| SPCE | 2026-09-25 | 2 | put | 2,260 | 668 | -1,592 | -70.4% |
| SPX | 2026-10-08 | 7,500 | put | 1,145 | 395 | -750 | -65.5% |
| QQQ | 2026-10-02 | 590 | put | 1,075 | 376 | -699 | -65% |
| SPY | 2026-11-20 | 355 | put | 2,692 | 1,006 | -1,686 | -62.6% |
| SPY | 2026-10-09 | 753 | put | 25,166 | 11,151 | -14,015 | -55.7% |
| SPX | 2027-07-16 | 6,300 | put | 1,691 | 772 | -919 | -54.3% |
| SPX | 2026-09-22 | 7,650 | call | 5,409 | 2,504 | -2,905 | -53.7% |
| SPX | 2026-09-22 | 7,675 | call | 5,195 | 2,412 | -2,783 | -53.6% |
| SPX | 2026-09-22 | 7,615 | put | 4,227 | 1,964 | -2,263 | -53.5% |
| QQQ | 2026-09-30 | 683 | put | 1,265 | 606 | -659 | -52.1% |
| BKNG | 2026-10-16 | 162.4 | call | 31,350 | 15,137 | -16,213 | -51.7% |
| COP | 2026-09-25 | 140 | call | 1,053 | 513 | -540 | -51.3% |
| SPX | 2026-12-18 | 8,275 | call | 6,058 | 2,954 | -3,104 | -51.2% |

## Top strikes, summed across expirations

| Symbol | Strike | Type | Change | Expirations summed |
|---|---|---|---|---|
| GLD | 450 | call | +113,526 | 22 |
| GLD | 485 | call | +106,288 | 11 |
| SPY | 785 | call | +97,943 | 25 |
| QQQ | 730 | put | +76,300 | 28 |
| QQQ | 775 | call | +71,008 | 24 |
| IWM | 272 | put | +66,402 | 12 |
| SHOP | 145 | call | +55,958 | 13 |
| QQQ | 725 | put | +49,051 | 26 |
| QQQ | 720 | put | +46,455 | 27 |
| QQQ | 760 | call | +46,373 | 28 |
| SPY | 770 | put | +41,068 | 31 |
| QQQ | 735 | put | +39,064 | 25 |
| SPY | 767 | put | +37,898 | 17 |
| SPX | 8,000 | call | +36,966 | 52 |
| INTC | 110 | call | -34,660 | 22 |
| TLT | 115 | call | +32,327 | 6 |
| QQQ | 715 | put | +31,534 | 26 |
| INTC | 110 | put | +29,418 | 22 |
| QQQ | 700 | put | +28,813 | 30 |
| QQQ | 650 | put | +28,242 | 28 |

## Symbols by net change

Largest net increases:

| Symbol | Net change | Calls | Puts |
|---|---|---|---|
| QQQ | +1,211,912 | +485,255 | +726,657 |
| SPY | +1,192,311 | +452,326 | +739,985 |
| SPX | +814,845 | +359,178 | +455,667 |
| GLD | +308,878 | +272,984 | +35,894 |
| IWM | +282,125 | +125,273 | +156,852 |
| INTC | +205,234 | +84,752 | +120,482 |
| TSLA | +174,348 | +103,043 | +71,305 |
| AAPL | +156,533 | +87,594 | +68,939 |
| TLT | +142,372 | +135,063 | +7,309 |
| SOFI | +120,370 | +82,753 | +37,617 |

Largest net decreases:

| Symbol | Net change | Calls | Puts |
|---|---|---|---|
| XLI | -2,965 | +2,698 | -5,663 |
| LCID | -2,409 | +11,023 | -13,432 |

## 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/2026-09-21