# Biggest options open interest changes

OI settled 2026-10-15 vs 2026-10-14.

> 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.

212 of 214 archived US symbols compared. The other 2 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: 116,627 contracts changed open interest, +9,874,687 added, -3,751,327 removed, net +6,123,360 contracts.

## Largest open interest increases (contracts)

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| TLT | 2026-11-30 | 86 | call | 808 | 88,845 | +88,037 |
| EWZ | 2026-10-30 | 34 | put | 167,010 | 240,638 | +73,628 |
| EWZ | 2026-10-30 | 38 | put | 25,946 | 98,943 | +72,997 |
| NVDA | 2026-12-18 | 190 | call | 11,594 | 83,995 | +72,401 |
| NVDA | 2026-11-20 | 260 | call | 29,605 | 97,741 | +68,136 |
| NVDA | 2026-11-20 | 190 | put | 29,705 | 89,689 | +59,984 |
| SPY | 2026-10-19 | 655 | put | 3 | 57,157 | +57,154 |
| EWZ | 2026-12-18 | 50 | call | 385,797 | 439,343 | +53,546 |
| SPY | 2026-10-30 | 760 | put | 22,740 | 75,524 | +52,784 |
| SPY | 2026-10-19 | 660 | put | 65 | 52,245 | +52,180 |
| QQQ | 2026-10-30 | 715 | put | 44,330 | 95,625 | +51,295 |
| XLP | 2029-01-19 | 55 | put | 18,750 | 68,750 | +50,000 |
| XLF | 2028-12-15 | 30 | put | 816 | 50,813 | +49,997 |
| SPY | 2026-10-30 | 745 | put | 25,729 | 73,004 | +47,275 |
| XLE | 2027-12-17 | 35 | put | 33,302 | 75,471 | +42,169 |
| GRAB | 2027-06-17 | 2.5 | put | 2,299 | 43,558 | +41,259 |
| TLT | 2026-11-13 | 81 | call | 1,714 | 40,491 | +38,777 |
| TLT | 2026-11-13 | 79 | put | 1,724 | 40,361 | +38,637 |
| NVDA | 2026-11-20 | 230 | call | 63,859 | 98,507 | +34,648 |
| XLU | 2029-01-19 | 25 | put | 0 | 27,500 | +27,500 |

## Largest open interest decreases (contracts)

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SPY | 2026-10-30 | 740 | put | 107,725 | 43,353 | -64,372 |
| SPY | 2026-10-30 | 755 | put | 87,266 | 25,934 | -61,332 |
| XLU | 2026-10-30 | 41 | call | 92,079 | 34,810 | -57,269 |
| AAPL | 2026-10-16 | 340 | call | 101,850 | 49,396 | -52,454 |
| GLD | 2027-01-15 | 335 | put | 131,586 | 82,332 | -49,254 |
| GLD | 2027-01-15 | 330 | put | 116,258 | 75,813 | -40,445 |
| TLT | 2026-10-16 | 80 | call | 116,321 | 77,287 | -39,034 |
| NVDA | 2026-12-18 | 170 | put | 64,986 | 29,018 | -35,968 |
| NVDA | 2026-12-18 | 210 | put | 78,059 | 43,197 | -34,862 |
| QQQ | 2026-10-30 | 725 | put | 63,704 | 31,344 | -32,360 |
| TLT | 2026-12-18 | 90 | call | 337,716 | 307,978 | -29,738 |
| NVDA | 2026-10-16 | 180 | call | 63,306 | 33,903 | -29,403 |
| MDT | 2026-10-16 | 130 | put | 25,090 | 90 | -25,000 |
| NVDA | 2027-01-15 | 220 | put | 51,555 | 26,623 | -24,932 |
| AMZN | 2026-10-30 | 275 | call | 30,146 | 5,337 | -24,809 |
| AMZN | 2026-10-30 | 295 | call | 27,612 | 2,803 | -24,809 |
| NVDA | 2027-01-15 | 170 | put | 68,350 | 44,838 | -23,512 |
| IWM | 2026-11-20 | 258 | put | 39,398 | 15,911 | -23,487 |
| IWM | 2026-10-30 | 225 | put | 27,985 | 5,291 | -22,694 |
| IWM | 2026-10-16 | 282 | put | 24,977 | 5,342 | -19,635 |

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

Increases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SPY | 2026-10-19 | 655 | put | 3 | 57,157 | +57,154 |
| SPY | 2026-10-30 | 760 | put | 22,740 | 75,524 | +52,784 |
| SPY | 2026-10-19 | 660 | put | 65 | 52,245 | +52,180 |
| QQQ | 2026-10-30 | 715 | put | 44,330 | 95,625 | +51,295 |
| SPY | 2026-10-30 | 745 | put | 25,729 | 73,004 | +47,275 |
| IWM | 2026-11-20 | 262 | put | 26,083 | 53,281 | +27,198 |
| IWM | 2026-11-20 | 260 | put | 67,300 | 87,132 | +19,832 |
| QQQ | 2026-10-16 | 723 | put | 5,550 | 25,266 | +19,716 |
| SPY | 2026-10-20 | 731 | put | 29 | 19,269 | +19,240 |
| QQQ | 2026-11-20 | 600 | put | 15,924 | 34,825 | +18,901 |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SPY | 2026-10-30 | 740 | put | 107,725 | 43,353 | -64,372 |
| SPY | 2026-10-30 | 755 | put | 87,266 | 25,934 | -61,332 |
| QQQ | 2026-10-30 | 725 | put | 63,704 | 31,344 | -32,360 |
| IWM | 2026-11-20 | 258 | put | 39,398 | 15,911 | -23,487 |
| IWM | 2026-10-30 | 225 | put | 27,985 | 5,291 | -22,694 |
| IWM | 2026-10-16 | 282 | put | 24,977 | 5,342 | -19,635 |
| IWM | 2026-10-30 | 278 | put | 38,341 | 21,809 | -16,532 |
| IWM | 2026-10-30 | 271 | put | 36,636 | 21,120 | -15,516 |
| QQQ | 2026-10-16 | 745 | put | 15,423 | 1,608 | -13,815 |
| QQQ | 2026-10-16 | 740 | put | 27,711 | 16,186 | -11,525 |

## Single stocks

Increases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| NVDA | 2026-12-18 | 190 | call | 11,594 | 83,995 | +72,401 |
| NVDA | 2026-11-20 | 260 | call | 29,605 | 97,741 | +68,136 |
| NVDA | 2026-11-20 | 190 | put | 29,705 | 89,689 | +59,984 |
| GRAB | 2027-06-17 | 2.5 | put | 2,299 | 43,558 | +41,259 |
| NVDA | 2026-11-20 | 230 | call | 63,859 | 98,507 | +34,648 |
| NVDA | 2026-11-20 | 295 | call | 71,672 | 89,611 | +17,939 |
| AMZN | 2026-10-30 | 280 | call | 28,743 | 46,221 | +17,478 |
| AMZN | 2026-10-30 | 265 | call | 5,748 | 22,492 | +16,744 |
| NVDA | 2026-10-23 | 225 | call | 10,379 | 26,565 | +16,186 |
| AMD | 2026-11-20 | 440 | put | 3,753 | 19,038 | +15,285 |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| AAPL | 2026-10-16 | 340 | call | 101,850 | 49,396 | -52,454 |
| NVDA | 2026-12-18 | 170 | put | 64,986 | 29,018 | -35,968 |
| NVDA | 2026-12-18 | 210 | put | 78,059 | 43,197 | -34,862 |
| NVDA | 2026-10-16 | 180 | call | 63,306 | 33,903 | -29,403 |
| MDT | 2026-10-16 | 130 | put | 25,090 | 90 | -25,000 |
| NVDA | 2027-01-15 | 220 | put | 51,555 | 26,623 | -24,932 |
| AMZN | 2026-10-30 | 275 | call | 30,146 | 5,337 | -24,809 |
| AMZN | 2026-10-30 | 295 | call | 27,612 | 2,803 | -24,809 |
| NVDA | 2027-01-15 | 170 | put | 68,350 | 44,838 | -23,512 |
| MSTR | 2026-10-16 | 157.5 | call | 41,134 | 22,177 | -18,957 |

## Calls vs puts

| Type | Added | Removed | Net |
|---|---|---|---|
| Calls | +4,813,513 | -1,799,604 | +3,013,909 |
| Puts | +5,061,174 | -1,951,723 | +3,109,451 |

## 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 | 2026-11-13 | 81 | call | 1,714 | 40,491 | +38,777 | +2,262.4% |
| TLT | 2026-11-13 | 79 | put | 1,724 | 40,361 | +38,637 | +2,241.1% |
| GRAB | 2027-06-17 | 2.5 | put | 2,299 | 43,558 | +41,259 | +1,794.6% |
| IWM | 2026-10-30 | 258 | put | 1,375 | 15,466 | +14,091 | +1,024.8% |
| EWZ | 2026-10-30 | 39 | put | 1,441 | 15,438 | +13,997 | +971.3% |
| SPX | 2026-10-30 | 7,750 | put | 2,476 | 24,835 | +22,359 | +903% |
| QQQ | 2026-10-23 | 735 | call | 1,590 | 15,021 | +13,431 | +844.7% |
| ET | 2027-01-15 | 19 | put | 1,730 | 13,307 | +11,577 | +669.2% |
| XLF | 2028-12-15 | 52 | put | 2,102 | 16,102 | +14,000 | +666% |
| NVDA | 2026-12-18 | 190 | call | 11,594 | 83,995 | +72,401 | +624.5% |
| SPY | 2026-10-21 | 746 | put | 1,471 | 10,515 | +9,044 | +614.8% |
| QQQ | 2026-10-16 | 721 | put | 2,790 | 19,686 | +16,896 | +605.6% |
| EWY | 2026-10-16 | 160 | call | 2,593 | 16,160 | +13,567 | +523.2% |
| XOM | 2026-11-20 | 200 | call | 2,044 | 12,404 | +10,360 | +506.8% |
| XLP | 2026-12-18 | 84 | put | 3,048 | 18,061 | +15,013 | +492.6% |
| MSTR | 2026-10-23 | 155 | call | 1,881 | 11,131 | +9,250 | +491.8% |
| OPEN | 2026-10-23 | 2 | call | 1,096 | 6,231 | +5,135 | +468.5% |
| AMD | 2026-11-20 | 440 | put | 3,753 | 19,038 | +15,285 | +407.3% |
| NVDA | 2026-10-16 | 217.5 | call | 1,547 | 7,844 | +6,297 | +407% |
| NVDA | 2026-10-19 | 220 | call | 1,289 | 6,474 | +5,185 | +402.2% |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change | Change % |
|---|---|---|---|---|---|---|---|
| SPCX | 2027-03-19 | 265 | put | 1,000 | 0 | -1,000 | -100% |
| BAC | 2026-10-23 | 56 | put | 3,480 | 2 | -3,478 | -99.9% |
| XLY | 2026-10-16 | 118 | put | 4,012 | 10 | -4,002 | -99.8% |
| MDT | 2026-10-16 | 130 | put | 25,090 | 90 | -25,000 | -99.6% |
| PLTR | 2026-10-16 | 220 | put | 1,130 | 8 | -1,122 | -99.3% |
| EEM | 2026-10-16 | 67.5 | put | 2,864 | 22 | -2,842 | -99.2% |
| SPY | 2026-10-16 | 782 | put | 1,196 | 10 | -1,186 | -99.2% |
| QQQ | 2026-11-30 | 790 | put | 1,234 | 13 | -1,221 | -98.9% |
| SOFI | 2027-01-15 | 27 | put | 1,387 | 16 | -1,371 | -98.8% |
| INTC | 2026-10-23 | 125 | put | 1,272 | 19 | -1,253 | -98.5% |
| INTC | 2026-10-16 | 113 | put | 3,301 | 55 | -3,246 | -98.3% |
| XLK | 2026-10-16 | 196 | put | 1,682 | 35 | -1,647 | -97.9% |
| INTC | 2026-10-16 | 108 | put | 1,919 | 87 | -1,832 | -95.5% |
| INTC | 2026-10-16 | 111 | put | 1,985 | 91 | -1,894 | -95.4% |
| INTC | 2026-10-16 | 112 | put | 1,155 | 57 | -1,098 | -95.1% |
| EWY | 2026-10-16 | 179 | put | 2,575 | 138 | -2,437 | -94.6% |
| INTC | 2026-10-16 | 109 | put | 2,162 | 118 | -2,044 | -94.5% |
| SMR | 2027-01-15 | 20 | put | 1,388 | 77 | -1,311 | -94.5% |
| NVDA | 2028-12-15 | 400 | put | 1,690 | 112 | -1,578 | -93.4% |
| QQQ | 2026-10-16 | 741 | put | 4,950 | 339 | -4,611 | -93.2% |

## Top strikes, summed across expirations

| Symbol | Strike | Type | Change | Expirations summed |
|---|---|---|---|---|
| TLT | 86 | call | +84,280 | 26 |
| EWZ | 38 | put | +82,337 | 10 |
| EWZ | 34 | put | +80,109 | 10 |
| NVDA | 190 | call | +72,899 | 24 |
| TLT | 80 | call | -72,372 | 31 |
| NVDA | 190 | put | +70,356 | 24 |
| QQQ | 715 | put | +68,436 | 26 |
| SPY | 760 | put | +68,019 | 27 |
| NVDA | 260 | call | +67,829 | 22 |
| SPY | 740 | put | -64,869 | 26 |
| SPY | 755 | put | -59,693 | 28 |
| XLU | 41 | call | -59,320 | 12 |
| EWZ | 50 | call | +59,283 | 9 |
| SPY | 655 | put | +57,883 | 19 |
| SPY | 660 | put | +54,360 | 20 |
| NVDA | 170 | put | -53,850 | 24 |
| AAPL | 340 | call | -51,389 | 23 |
| NVDA | 230 | call | +50,573 | 24 |
| XLP | 55 | put | +50,000 | 1 |
| XLF | 30 | put | +49,995 | 2 |

## Symbols by net change

Largest net increases:

| Symbol | Net change | Calls | Puts |
|---|---|---|---|
| SPY | +829,361 | +262,128 | +567,233 |
| SPX | +728,966 | +250,274 | +478,692 |
| QQQ | +620,513 | +281,261 | +339,252 |
| NVDA | +429,863 | +336,663 | +93,200 |
| EWZ | +312,380 | +69,954 | +242,426 |
| INTC | +209,462 | +144,159 | +65,303 |
| TSLA | +173,588 | +122,758 | +50,830 |
| IWM | +137,382 | +118,807 | +18,575 |
| XLP | +136,205 | +13,170 | +123,035 |
| MU | +133,465 | +85,749 | +47,716 |

Largest net decreases:

| Symbol | Net change | Calls | Puts |
|---|---|---|---|
| XLU | -25,012 | -61,948 | +36,936 |
| MDT | -20,393 | -376 | -20,017 |
| FXI | -9,608 | +7,155 | -16,763 |
| SHOP | -8,076 | +3,713 | -11,789 |
| LOW | -6,802 | -8,113 | +1,311 |
| XLY | -2,885 | +110 | -2,995 |
| MCD | -1,991 | -3,460 | +1,469 |
| HBAN | -1,493 | +208 | -1,701 |
| TTWO | -777 | +1,503 | -2,280 |
| CMG | -483 | +3,342 | -3,825 |

## Archive

- https://squawkflow.com/oi-changes/2026-10-15.md (2026-10-15 vs 2026-10-14, 212 symbols)
- https://squawkflow.com/oi-changes/2026-10-14.md (2026-10-14 vs 2026-10-13, 210 symbols)
- https://squawkflow.com/oi-changes/2026-10-13.md (2026-10-13 vs 2026-10-12, 210 symbols)
- https://squawkflow.com/oi-changes/2026-10-12.md (2026-10-12 vs 2026-10-09, 210 symbols)
- https://squawkflow.com/oi-changes/2026-10-09.md (2026-10-09 vs 2026-10-08, 168 symbols)
- 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)

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

Canonical: https://squawkflow.com/oi-changes/2026-10-15