# Biggest options open interest changes

OI settled 2026-10-02 vs 2026-10-01.

> 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. 4 of those compared reported an identical book in both sessions.

Across the compared symbols: 73,805 contracts changed open interest, +6,763,626 added, -1,081,426 removed, net +5,682,200 contracts.

## Largest open interest increases (contracts)

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SPY | 2026-10-09 | 787 | call | 1,714 | 234,105 | +232,391 |
| XLK | 2026-10-09 | 135 | put | 501 | 78,527 | +78,026 |
| SPY | 2026-10-09 | 590 | put | 291 | 68,924 | +68,633 |
| TLT | 2026-12-18 | 80 | call | 59,252 | 116,761 | +57,509 |
| TLT | 2026-12-18 | 84 | call | 56,429 | 98,836 | +42,407 |
| IWM | 2026-10-23 | 277 | put | 954 | 33,605 | +32,651 |
| MSTR | 2026-10-09 | 95 | put | 4,442 | 36,356 | +31,914 |
| QQQ | 2026-12-18 | 850 | call | 8,699 | 38,961 | +30,262 |
| XLE | 2027-03-19 | 54 | put | 7,157 | 34,721 | +27,564 |
| TLT | 2026-12-18 | 73 | put | 133,522 | 159,778 | +26,256 |
| QQQ | 2026-10-16 | 480 | put | 516 | 26,689 | +26,173 |
| TSLA | 2026-10-16 | 200 | put | 3,943 | 29,669 | +25,726 |
| XLK | 2027-06-17 | 45 | put | 78 | 25,058 | +24,980 |
| QQQ | 2026-10-06 | 740 | put | 759 | 25,530 | +24,771 |
| WU | 2029-01-19 | 7 | call | 6,096 | 30,345 | +24,249 |
| XLF | 2026-11-20 | 53 | put | 30,090 | 52,779 | +22,689 |
| XLU | 2027-01-15 | 45 | call | 13,863 | 34,563 | +20,700 |
| TSLA | 2026-10-09 | 150 | put | 18,544 | 38,774 | +20,230 |
| TSLA | 2026-10-05 | 410 | call | 333 | 20,541 | +20,208 |
| TLT | 2026-11-20 | 84 | call | 25,808 | 46,012 | +20,204 |

## Largest open interest decreases (contracts)

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SPY | 2026-10-09 | 725 | put | 78,757 | 46,285 | -32,472 |
| TLT | 2026-10-16 | 84 | put | 41,488 | 11,474 | -30,014 |
| SPY | 2026-10-09 | 745 | put | 80,934 | 51,985 | -28,949 |
| IWM | 2026-10-16 | 268 | put | 51,477 | 24,986 | -26,491 |
| TLT | 2026-10-16 | 80 | call | 160,206 | 136,287 | -23,919 |
| XLE | 2026-12-18 | 52.5 | put | 38,006 | 16,967 | -21,039 |
| IWM | 2026-10-09 | 277 | put | 38,764 | 18,484 | -20,280 |
| SPY | 2026-10-16 | 734 | put | 35,627 | 15,621 | -20,006 |
| SPY | 2026-12-18 | 830 | call | 53,084 | 34,035 | -19,049 |
| TLT | 2027-09-17 | 86 | call | 77,170 | 58,892 | -18,278 |
| IWM | 2026-10-16 | 260 | put | 49,891 | 35,265 | -14,626 |
| TLT | 2026-10-16 | 83 | put | 13,293 | 2,207 | -11,086 |
| IWM | 2026-11-20 | 266 | put | 23,540 | 12,603 | -10,937 |
| XLF | 2026-10-16 | 56 | put | 135,326 | 125,311 | -10,015 |
| TLT | 2026-10-16 | 75 | put | 29,154 | 22,403 | -6,751 |
| QQQ | 2026-10-05 | 736 | put | 25,633 | 18,921 | -6,712 |
| QQQ | 2026-10-30 | 680 | put | 21,427 | 14,928 | -6,499 |
| TLT | 2027-01-15 | 70 | put | 89,292 | 83,215 | -6,077 |
| TLT | 2026-10-16 | 81 | call | 65,198 | 59,146 | -6,052 |
| SPY | 2026-10-09 | 780 | call | 50,715 | 44,701 | -6,014 |

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

Increases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SPY | 2026-10-09 | 787 | call | 1,714 | 234,105 | +232,391 |
| SPY | 2026-10-09 | 590 | put | 291 | 68,924 | +68,633 |
| IWM | 2026-10-23 | 277 | put | 954 | 33,605 | +32,651 |
| QQQ | 2026-12-18 | 850 | call | 8,699 | 38,961 | +30,262 |
| QQQ | 2026-10-16 | 480 | put | 516 | 26,689 | +26,173 |
| QQQ | 2026-10-06 | 740 | put | 759 | 25,530 | +24,771 |
| SPY | 2026-10-16 | 560 | put | 318 | 19,595 | +19,277 |
| IWM | 2026-11-20 | 268 | put | 8,002 | 25,610 | +17,608 |
| IWM | 2026-11-20 | 270 | put | 63,300 | 80,513 | +17,213 |
| SPY | 2026-10-16 | 739 | put | 3,348 | 20,361 | +17,013 |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SPY | 2026-10-09 | 725 | put | 78,757 | 46,285 | -32,472 |
| SPY | 2026-10-09 | 745 | put | 80,934 | 51,985 | -28,949 |
| IWM | 2026-10-16 | 268 | put | 51,477 | 24,986 | -26,491 |
| IWM | 2026-10-09 | 277 | put | 38,764 | 18,484 | -20,280 |
| SPY | 2026-10-16 | 734 | put | 35,627 | 15,621 | -20,006 |
| SPY | 2026-12-18 | 830 | call | 53,084 | 34,035 | -19,049 |
| IWM | 2026-10-16 | 260 | put | 49,891 | 35,265 | -14,626 |
| IWM | 2026-11-20 | 266 | put | 23,540 | 12,603 | -10,937 |
| QQQ | 2026-10-05 | 736 | put | 25,633 | 18,921 | -6,712 |
| QQQ | 2026-10-30 | 680 | put | 21,427 | 14,928 | -6,499 |

## Single stocks

Increases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| MSTR | 2026-10-09 | 95 | put | 4,442 | 36,356 | +31,914 |
| TSLA | 2026-10-16 | 200 | put | 3,943 | 29,669 | +25,726 |
| WU | 2029-01-19 | 7 | call | 6,096 | 30,345 | +24,249 |
| TSLA | 2026-10-09 | 150 | put | 18,544 | 38,774 | +20,230 |
| TSLA | 2026-10-05 | 410 | call | 333 | 20,541 | +20,208 |
| TSLA | 2026-10-09 | 230 | put | 1,182 | 19,988 | +18,806 |
| BAC | 2026-10-09 | 53 | put | 4,520 | 22,032 | +17,512 |
| AMC | 2026-10-23 | 2.5 | put | 1,335 | 18,794 | +17,459 |
| MSTR | 2026-10-09 | 175 | call | 1,960 | 19,361 | +17,401 |
| MSTR | 2026-10-09 | 167.5 | call | 975 | 18,079 | +17,104 |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| WFC | 2026-10-16 | 77.5 | put | 13,584 | 8,429 | -5,155 |
| AAPL | 2026-10-05 | 330 | call | 8,915 | 4,250 | -4,665 |
| C | 2026-10-16 | 132 | call | 5,842 | 1,710 | -4,132 |
| SNAP | 2027-01-15 | 6 | call | 36,519 | 32,964 | -3,555 |
| MSTR | 2026-10-23 | 172.5 | call | 5,753 | 2,535 | -3,218 |
| MSTR | 2026-10-16 | 95 | call | 41,670 | 38,524 | -3,146 |
| MU | 2026-10-16 | 1,300 | call | 17,742 | 14,832 | -2,910 |
| INTC | 2027-01-15 | 37 | put | 11,285 | 8,591 | -2,694 |
| MU | 2026-10-30 | 1,300 | call | 5,594 | 2,906 | -2,688 |
| U | 2026-10-16 | 46 | call | 74,224 | 71,710 | -2,514 |

## Calls vs puts

| Type | Added | Removed | Net |
|---|---|---|---|
| Calls | +3,284,369 | -478,102 | +2,806,267 |
| Puts | +3,479,257 | -603,324 | +2,875,933 |

## 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 | 787 | call | 1,714 | 234,105 | +232,391 | +13,558.4% |
| TSLA | 2026-10-09 | 230 | put | 1,182 | 19,988 | +18,806 | +1,591% |
| AMC | 2026-10-23 | 2.5 | put | 1,335 | 18,794 | +17,459 | +1,307.8% |
| TSLA | 2026-10-09 | 250 | put | 1,125 | 13,594 | +12,469 | +1,108.4% |
| SPX | 2026-10-05 | 7,150 | put | 1,268 | 14,399 | +13,131 | +1,035.6% |
| SPX | 2026-10-05 | 7,960 | call | 1,026 | 11,550 | +10,524 | +1,025.7% |
| SPY | 2026-11-20 | 733 | put | 1,116 | 11,942 | +10,826 | +970.1% |
| AMD | 2026-10-09 | 150 | put | 1,046 | 11,121 | +10,075 | +963.2% |
| AMZN | 2026-10-09 | 252.5 | call | 1,216 | 12,844 | +11,628 | +956.2% |
| QQQ | 2026-10-05 | 560 | put | 1,006 | 10,608 | +9,602 | +954.5% |
| TLT | 2026-10-05 | 77.5 | call | 1,336 | 13,928 | +12,592 | +942.5% |
| SPY | 2026-10-05 | 772 | call | 1,312 | 13,640 | +12,328 | +939.6% |
| CVX | 2026-10-09 | 220 | call | 1,150 | 11,606 | +10,456 | +909.2% |
| MSTR | 2026-10-09 | 175 | call | 1,960 | 19,361 | +17,401 | +887.8% |
| AMC | 2026-10-30 | 2.5 | put | 1,686 | 16,253 | +14,567 | +864% |
| TLT | 2028-01-21 | 78 | call | 2,368 | 22,505 | +20,137 | +850.4% |
| TLT | 2027-09-17 | 85 | call | 2,536 | 21,444 | +18,908 | +745.6% |
| MSTR | 2026-10-09 | 95 | put | 4,442 | 36,356 | +31,914 | +718.5% |
| SPY | 2026-10-05 | 767 | put | 1,195 | 9,449 | +8,254 | +690.7% |
| TSLA | 2026-10-16 | 200 | put | 3,943 | 29,669 | +25,726 | +652.4% |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change | Change % |
|---|---|---|---|---|---|---|---|
| ABT | 2026-10-16 | 103 | put | 1,021 | 122 | -899 | -88.1% |
| TLT | 2026-10-05 | 79.5 | put | 3,723 | 464 | -3,259 | -87.5% |
| TLT | 2026-10-16 | 83 | put | 13,293 | 2,207 | -11,086 | -83.4% |
| ABT | 2026-10-16 | 97 | put | 1,123 | 256 | -867 | -77.2% |
| TLT | 2026-10-16 | 85 | put | 3,325 | 829 | -2,496 | -75.1% |
| TLT | 2026-10-16 | 84 | put | 41,488 | 11,474 | -30,014 | -72.3% |
| C | 2026-10-16 | 132 | call | 5,842 | 1,710 | -4,132 | -70.7% |
| AMD | 2026-12-18 | 700 | put | 3,343 | 1,334 | -2,009 | -60.1% |
| IWM | 2026-10-07 | 281 | call | 2,196 | 923 | -1,273 | -58% |
| MRK | 2026-10-16 | 157.5 | call | 1,580 | 665 | -915 | -57.9% |
| COIN | 2027-12-17 | 300 | put | 1,524 | 646 | -878 | -57.6% |
| SPX | 2026-10-06 | 7,510 | put | 2,692 | 1,153 | -1,539 | -57.2% |
| BAC | 2027-12-17 | 57.5 | put | 1,501 | 648 | -853 | -56.8% |
| SPY | 2026-10-16 | 734 | put | 35,627 | 15,621 | -20,006 | -56.2% |
| MSTR | 2026-10-23 | 172.5 | call | 5,753 | 2,535 | -3,218 | -55.9% |
| XLE | 2026-12-18 | 52.5 | put | 38,006 | 16,967 | -21,039 | -55.4% |
| INTC | 2026-10-30 | 86 | put | 1,330 | 602 | -728 | -54.7% |
| LULU | 2026-10-09 | 102 | call | 2,199 | 1,018 | -1,181 | -53.7% |
| IWM | 2026-10-09 | 277 | put | 38,764 | 18,484 | -20,280 | -52.3% |
| AAPL | 2026-10-05 | 330 | call | 8,915 | 4,250 | -4,665 | -52.3% |

## Top strikes, summed across expirations

| Symbol | Strike | Type | Change | Expirations summed |
|---|---|---|---|---|
| SPY | 787 | call | +232,519 | 19 |
| XLK | 135 | put | +78,036 | 5 |
| SPY | 590 | put | +69,571 | 17 |
| TLT | 78 | call | +69,457 | 29 |
| TLT | 84 | call | +68,499 | 19 |
| AMC | 2.5 | put | +43,629 | 11 |
| QQQ | 740 | put | +41,571 | 29 |
| IWM | 270 | put | +41,202 | 23 |
| TLT | 80 | call | +36,693 | 30 |
| MSTR | 95 | put | +34,418 | 13 |
| QQQ | 850 | call | +32,494 | 19 |
| TLT | 77.5 | call | +30,968 | 9 |
| XLF | 53 | put | +30,381 | 20 |
| TLT | 84 | put | -30,188 | 15 |
| SPY | 745 | put | -28,191 | 25 |
| TLT | 73 | put | +27,926 | 17 |
| TSLA | 200 | put | +27,614 | 17 |
| XLE | 54 | put | +27,576 | 4 |
| SPY | 765 | put | +27,253 | 27 |
| TLT | 85 | call | +27,050 | 26 |

## Symbols by net change

Largest net increases:

| Symbol | Net change | Calls | Puts |
|---|---|---|---|
| SPY | +1,027,391 | +476,652 | +550,739 |
| SPX | +679,941 | +252,892 | +427,049 |
| QQQ | +643,563 | +214,866 | +428,697 |
| TLT | +371,302 | +329,883 | +41,419 |
| TSLA | +345,972 | +161,270 | +184,702 |
| MSTR | +244,908 | +145,560 | +99,348 |
| IWM | +241,346 | +70,294 | +171,052 |
| MU | +176,066 | +59,946 | +116,120 |
| INTC | +141,837 | +64,097 | +77,740 |
| AMD | +119,439 | +55,050 | +64,389 |

Largest net decreases:

| Symbol | Net change | Calls | Puts |
|---|---|---|---|
| U | -3,890 | -4,307 | +417 |

## 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/2026-10-02