# Biggest options open interest changes

OI settled 2026-10-01 vs 2026-09-30.

> 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.

156 of 212 archived US symbols compared. The other 56 lacked a consecutive settlement pair in the archive for these two sessions. 4 of those compared reported an identical book in both sessions.

Across the compared symbols: 73,780 contracts changed open interest, +5,950,320 added, -1,276,007 removed, net +4,674,313 contracts.

## Largest open interest increases (contracts)

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| TLT | 2026-12-18 | 73 | put | 57,402 | 133,522 | +76,120 |
| TLT | 2027-09-17 | 86 | call | 4,190 | 77,170 | +72,980 |
| IWM | 2026-10-16 | 268 | put | 17,851 | 51,477 | +33,626 |
| IWM | 2026-12-18 | 260 | put | 65,872 | 88,581 | +22,709 |
| SPY | 2026-10-30 | 755 | put | 61,128 | 83,398 | +22,270 |
| SPY | 2026-10-30 | 725 | put | 61,844 | 83,928 | +22,084 |
| QQQ | 2026-10-02 | 738 | put | 9,843 | 31,406 | +21,563 |
| SPY | 2026-10-16 | 734 | put | 14,246 | 35,627 | +21,381 |
| XLU | 2026-10-16 | 41 | call | 35,614 | 56,376 | +20,762 |
| IWM | 2026-10-08 | 260 | put | 68 | 20,146 | +20,078 |
| QQQ | 2026-10-09 | 754 | call | 871 | 20,514 | +19,643 |
| TLT | 2026-11-20 | 71 | put | 788 | 19,506 | +18,718 |
| XLF | 2026-10-09 | 51.5 | put | 1,345 | 19,753 | +18,408 |
| TSLA | 2026-10-09 | 150 | put | 422 | 18,544 | +18,122 |
| QQQ | 2026-10-05 | 736 | put | 7,551 | 25,633 | +18,082 |
| QQQ | 2026-10-02 | 740 | put | 13,421 | 31,326 | +17,905 |
| SPY | 2026-12-18 | 830 | call | 35,385 | 53,084 | +17,699 |
| SPY | 2026-10-07 | 802 | call | 33 | 16,881 | +16,848 |
| QQQ | 2026-10-02 | 727 | put | 2,344 | 19,012 | +16,668 |
| TLT | 2026-10-16 | 80 | call | 143,563 | 160,206 | +16,643 |

## Largest open interest decreases (contracts)

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| TLT | 2026-10-16 | 84 | put | 70,906 | 41,488 | -29,418 |
| IWM | 2026-10-16 | 266 | put | 56,295 | 28,181 | -28,114 |
| TLT | 2026-10-16 | 83 | put | 33,268 | 13,293 | -19,975 |
| TLT | 2026-10-16 | 84 | call | 99,719 | 80,271 | -19,448 |
| TLT | 2026-10-16 | 88 | put | 16,517 | 199 | -16,318 |
| TLT | 2026-11-20 | 77 | put | 90,351 | 75,386 | -14,965 |
| TLT | 2026-11-20 | 81 | put | 37,357 | 23,357 | -14,000 |
| TLT | 2026-11-20 | 75 | put | 53,909 | 40,300 | -13,609 |
| XLF | 2026-10-16 | 52 | put | 45,759 | 32,812 | -12,947 |
| TLT | 2026-10-16 | 83 | call | 197,963 | 185,191 | -12,772 |
| TLT | 2026-10-16 | 86 | put | 12,795 | 129 | -12,666 |
| SOFI | 2026-10-02 | 17 | put | 12,723 | 1,953 | -10,770 |
| SPY | 2026-10-16 | 750 | put | 71,432 | 61,370 | -10,062 |
| MDT | 2026-12-18 | 87.5 | put | 10,451 | 456 | -9,995 |
| SPX | 2026-10-02 | 7,900 | call | 23,288 | 13,904 | -9,384 |
| COIN | 2026-10-02 | 212.5 | call | 12,616 | 3,780 | -8,836 |
| COIN | 2026-10-02 | 202.5 | call | 16,081 | 7,587 | -8,494 |
| TSLA | 2026-10-05 | 377.5 | call | 15,758 | 7,825 | -7,933 |
| BAC | 2026-10-16 | 60 | put | 14,270 | 7,085 | -7,185 |
| XLU | 2026-10-02 | 40 | call | 34,139 | 27,056 | -7,083 |

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

Increases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| IWM | 2026-10-16 | 268 | put | 17,851 | 51,477 | +33,626 |
| IWM | 2026-12-18 | 260 | put | 65,872 | 88,581 | +22,709 |
| SPY | 2026-10-30 | 755 | put | 61,128 | 83,398 | +22,270 |
| SPY | 2026-10-30 | 725 | put | 61,844 | 83,928 | +22,084 |
| QQQ | 2026-10-02 | 738 | put | 9,843 | 31,406 | +21,563 |
| SPY | 2026-10-16 | 734 | put | 14,246 | 35,627 | +21,381 |
| IWM | 2026-10-08 | 260 | put | 68 | 20,146 | +20,078 |
| QQQ | 2026-10-09 | 754 | call | 871 | 20,514 | +19,643 |
| QQQ | 2026-10-05 | 736 | put | 7,551 | 25,633 | +18,082 |
| QQQ | 2026-10-02 | 740 | put | 13,421 | 31,326 | +17,905 |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| IWM | 2026-10-16 | 266 | put | 56,295 | 28,181 | -28,114 |
| SPY | 2026-10-16 | 750 | put | 71,432 | 61,370 | -10,062 |
| SPY | 2026-10-16 | 733 | put | 29,974 | 23,016 | -6,958 |
| QQQ | 2026-10-02 | 730 | put | 48,924 | 43,021 | -5,903 |
| IWM | 2026-11-20 | 264 | put | 30,942 | 25,546 | -5,396 |
| QQQ | 2026-11-20 | 780 | call | 20,926 | 15,557 | -5,369 |
| SPY | 2026-10-07 | 760 | put | 14,543 | 9,272 | -5,271 |
| SPY | 2026-10-02 | 765 | put | 16,937 | 11,850 | -5,087 |
| IWM | 2026-10-16 | 285 | put | 57,810 | 52,839 | -4,971 |
| QQQ | 2026-11-20 | 730 | call | 15,745 | 11,155 | -4,590 |

## Single stocks

Increases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| TSLA | 2026-10-09 | 150 | put | 422 | 18,544 | +18,122 |
| AMC | 2026-10-02 | 3 | call | 19,618 | 34,241 | +14,623 |
| MDT | 2026-12-18 | 82.5 | put | 901 | 14,405 | +13,504 |
| AAPL | 2026-10-02 | 335 | call | 5,747 | 19,105 | +13,358 |
| BAC | 2026-10-09 | 54 | put | 3,358 | 14,938 | +11,580 |
| TSLA | 2026-10-05 | 420 | call | 6,537 | 16,520 | +9,983 |
| XOM | 2027-03-19 | 200 | call | 10,863 | 20,835 | +9,972 |
| LULU | 2026-10-02 | 102 | call | 1,315 | 10,911 | +9,596 |
| AAPL | 2026-10-05 | 245 | put | 1 | 9,501 | +9,500 |
| AAPL | 2026-10-09 | 160 | put | 0 | 9,500 | +9,500 |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SOFI | 2026-10-02 | 17 | put | 12,723 | 1,953 | -10,770 |
| MDT | 2026-12-18 | 87.5 | put | 10,451 | 456 | -9,995 |
| COIN | 2026-10-02 | 212.5 | call | 12,616 | 3,780 | -8,836 |
| COIN | 2026-10-02 | 202.5 | call | 16,081 | 7,587 | -8,494 |
| TSLA | 2026-10-05 | 377.5 | call | 15,758 | 7,825 | -7,933 |
| BAC | 2026-10-16 | 60 | put | 14,270 | 7,085 | -7,185 |
| AMC | 2026-10-16 | 4 | call | 34,283 | 27,784 | -6,499 |
| UPS | 2026-11-20 | 110 | call | 14,279 | 7,963 | -6,316 |
| INTC | 2026-10-02 | 133 | call | 6,831 | 1,503 | -5,328 |
| TSLA | 2026-10-02 | 377.5 | call | 12,304 | 7,072 | -5,232 |

## Calls vs puts

| Type | Added | Removed | Net |
|---|---|---|---|
| Calls | +2,953,176 | -503,995 | +2,449,181 |
| Puts | +2,997,144 | -772,012 | +2,225,132 |

## 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 | 2027-09-17 | 86 | call | 4,190 | 77,170 | +72,980 | +1,741.8% |
| XLF | 2026-10-09 | 51.5 | put | 1,345 | 19,753 | +18,408 | +1,368.6% |
| SPX | 2026-10-02 | 7,380 | put | 1,102 | 12,172 | +11,070 | +1,004.5% |
| QQQ | 2026-10-05 | 735 | put | 1,158 | 12,118 | +10,960 | +946.5% |
| TLT | 2026-11-06 | 78 | call | 1,509 | 13,515 | +12,006 | +795.6% |
| BAC | 2026-10-02 | 54 | call | 1,021 | 8,573 | +7,552 | +739.7% |
| LULU | 2026-10-02 | 102 | call | 1,315 | 10,911 | +9,596 | +729.7% |
| QQQ | 2026-10-02 | 727 | put | 2,344 | 19,012 | +16,668 | +711.1% |
| IWM | 2026-10-16 | 264 | put | 1,117 | 8,813 | +7,696 | +689% |
| SPY | 2026-10-09 | 814 | call | 1,266 | 8,623 | +7,357 | +581.1% |
| SPY | 2026-10-30 | 829 | call | 1,096 | 7,136 | +6,040 | +551.1% |
| SPY | 2026-10-02 | 733 | put | 1,195 | 7,674 | +6,479 | +542.2% |
| SPX | 2026-10-05 | 7,400 | put | 1,098 | 6,480 | +5,382 | +490.2% |
| SPX | 2026-10-02 | 7,375 | put | 1,033 | 4,980 | +3,947 | +382.1% |
| AAPL | 2026-10-02 | 332.5 | call | 2,319 | 10,828 | +8,509 | +366.9% |
| QQQ | 2026-11-06 | 790 | call | 1,298 | 5,839 | +4,541 | +349.8% |
| QQQ | 2026-10-16 | 706 | put | 1,475 | 6,626 | +5,151 | +349.2% |
| SPX | 2026-10-05 | 6,000 | put | 3,270 | 14,641 | +11,371 | +347.7% |
| BAC | 2026-10-09 | 54 | put | 3,358 | 14,938 | +11,580 | +344.8% |
| SPY | 2026-10-02 | 761 | call | 1,014 | 4,346 | +3,332 | +328.6% |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change | Change % |
|---|---|---|---|---|---|---|---|
| TLT | 2029-01-19 | 120 | put | 5,963 | 0 | -5,963 | -100% |
| TLT | 2026-10-16 | 89 | put | 3,958 | 0 | -3,958 | -100% |
| CSCO | 2026-10-16 | 82.5 | call | 2,331 | 1 | -2,330 | -100% |
| TLT | 2026-10-16 | 95 | put | 1,003 | 0 | -1,003 | -100% |
| AAPL | 2026-10-02 | 345 | put | 2,297 | 4 | -2,293 | -99.8% |
| TLT | 2026-10-16 | 87 | put | 6,598 | 33 | -6,565 | -99.5% |
| CSCO | 2026-10-16 | 97.5 | call | 1,777 | 10 | -1,767 | -99.4% |
| SOFI | 2026-10-02 | 18 | put | 2,408 | 17 | -2,391 | -99.3% |
| CSCO | 2026-10-16 | 85 | call | 2,574 | 20 | -2,554 | -99.2% |
| TLT | 2026-10-05 | 81 | put | 1,208 | 10 | -1,198 | -99.2% |
| KO | 2026-10-16 | 92.5 | put | 1,876 | 17 | -1,859 | -99.1% |
| TLT | 2026-10-16 | 86 | put | 12,795 | 129 | -12,666 | -99% |
| HOOD | 2026-10-02 | 123 | put | 1,828 | 21 | -1,807 | -98.9% |
| TLT | 2026-10-16 | 88 | put | 16,517 | 199 | -16,318 | -98.8% |
| TLT | 2026-10-02 | 81 | put | 4,350 | 61 | -4,289 | -98.6% |
| HOOD | 2026-10-02 | 125 | put | 1,440 | 22 | -1,418 | -98.5% |
| CSCO | 2026-10-16 | 92.5 | call | 1,122 | 21 | -1,101 | -98.1% |
| UBER | 2026-10-02 | 71 | put | 2,396 | 49 | -2,347 | -98% |
| TLT | 2026-10-02 | 80.5 | put | 1,701 | 34 | -1,667 | -98% |
| TSLA | 2026-10-02 | 390 | put | 1,230 | 32 | -1,198 | -97.4% |

## Top strikes, summed across expirations

| Symbol | Strike | Type | Change | Expirations summed |
|---|---|---|---|---|
| TLT | 86 | call | +85,130 | 23 |
| TLT | 73 | put | +81,354 | 22 |
| TLT | 80 | call | +60,297 | 31 |
| IWM | 260 | put | +50,768 | 21 |
| XLU | 41 | call | +37,105 | 13 |
| SPY | 755 | put | +35,703 | 26 |
| IWM | 268 | put | +33,228 | 15 |
| AMC | 3 | call | +32,913 | 13 |
| TLT | 78 | call | +31,831 | 30 |
| QQQ | 725 | put | +31,397 | 27 |
| SPX | 7,000 | put | +30,639 | 50 |
| TLT | 84 | put | -30,242 | 15 |
| SPY | 734 | put | +30,075 | 16 |
| TLT | 79 | call | +28,292 | 27 |
| TLT | 76 | put | +26,274 | 26 |
| IWM | 290 | call | +25,739 | 28 |
| QQQ | 736 | put | +24,935 | 18 |
| QQQ | 738 | put | +23,964 | 18 |
| QQQ | 740 | put | +23,829 | 27 |
| TLT | 83 | put | -23,496 | 21 |

## Symbols by net change

Largest net increases:

| Symbol | Net change | Calls | Puts |
|---|---|---|---|
| SPY | +808,999 | +376,093 | +432,906 |
| QQQ | +634,834 | +172,119 | +462,715 |
| SPX | +617,596 | +228,204 | +389,392 |
| TLT | +371,442 | +359,183 | +12,259 |
| IWM | +344,181 | +169,788 | +174,393 |
| AAPL | +163,569 | +102,799 | +60,770 |
| XLU | +130,008 | +101,827 | +28,181 |
| TSLA | +128,482 | +74,467 | +54,015 |
| XLF | +113,385 | +46,582 | +66,803 |
| AMZN | +103,287 | +63,773 | +39,514 |

Largest net decreases:

| Symbol | Net change | Calls | Puts |
|---|---|---|---|
| CSCO | -2,485 | -6,966 | +4,481 |
| SYK | -1,010 | +47 | -1,057 |
| EOG | -87 | +208 | -295 |
| XLV | -55 | +1,628 | -1,683 |
| MCO | -48 | -20 | -28 |
| BR | -32 | +8 | -40 |

## 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/2026-10-01