# Biggest options open interest changes

OI settled 2026-09-29 vs 2026-09-28.

> 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.

150 of 212 archived US symbols compared. The other 62 lacked a consecutive settlement pair in the archive for these two sessions. 5 of those compared reported an identical book in both sessions.

Across the compared symbols: 71,204 contracts changed open interest, +6,016,139 added, -1,084,183 removed, net +4,931,956 contracts.

## Largest open interest increases (contracts)

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| TLT | 2026-10-16 | 80 | call | 69,172 | 135,120 | +65,948 |
| SPX | 2026-11-13 | 6,400 | put | 5 | 60,549 | +60,544 |
| SPY | 2026-10-23 | 745 | put | 1,038 | 61,466 | +60,428 |
| SPY | 2026-10-23 | 725 | put | 1,988 | 62,404 | +60,416 |
| SPX | 2026-11-13 | 6,300 | put | 60 | 58,815 | +58,755 |
| TLT | 2026-10-30 | 79 | put | 3,370 | 43,276 | +39,906 |
| QQQ | 2026-09-30 | 736 | put | 21,750 | 60,352 | +38,602 |
| SPY | 2026-10-09 | 780 | call | 7,994 | 43,624 | +35,630 |
| TLT | 2026-09-30 | 78 | call | 8,365 | 41,968 | +33,603 |
| SPY | 2026-10-09 | 725 | put | 46,452 | 78,584 | +32,132 |
| SPY | 2026-10-09 | 745 | put | 47,990 | 79,933 | +31,943 |
| TLT | 2026-09-30 | 79 | call | 33,859 | 65,690 | +31,831 |
| QQQ | 2026-12-18 | 690 | put | 29,114 | 60,803 | +31,689 |
| SPY | 2026-10-09 | 785 | call | 75,860 | 104,817 | +28,957 |
| TLT | 2026-10-02 | 80 | call | 27,483 | 55,747 | +28,264 |
| IWM | 2026-10-16 | 265 | put | 37,298 | 61,248 | +23,950 |
| BAC | 2026-10-02 | 54 | put | 4,581 | 27,387 | +22,806 |
| TLT | 2026-10-02 | 79 | call | 24,269 | 46,213 | +21,944 |
| QQQ | 2026-09-30 | 730 | put | 46,520 | 67,863 | +21,343 |
| SPY | 2026-10-16 | 729 | put | 18,649 | 39,041 | +20,392 |

## Largest open interest decreases (contracts)

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| XLF | 2027-03-19 | 61 | put | 33,566 | 3,822 | -29,744 |
| TLT | 2026-09-30 | 80 | put | 45,180 | 15,912 | -29,268 |
| TLT | 2028-01-21 | 100 | call | 420,965 | 392,492 | -28,473 |
| QQQ | 2026-09-30 | 726 | call | 35,553 | 9,021 | -26,532 |
| TLT | 2028-01-21 | 93 | call | 44,284 | 18,776 | -25,508 |
| QQQ | 2026-12-18 | 680 | put | 67,201 | 48,661 | -18,540 |
| XLF | 2026-10-16 | 56 | put | 150,393 | 134,625 | -15,768 |
| TLT | 2026-09-30 | 81 | put | 15,399 | 165 | -15,234 |
| SPY | 2026-10-16 | 732 | put | 72,155 | 58,210 | -13,945 |
| SPY | 2026-09-30 | 761 | put | 48,629 | 36,847 | -11,782 |
| IWM | 2026-09-30 | 285 | put | 41,457 | 30,281 | -11,176 |
| XLF | 2026-10-16 | 57 | put | 48,414 | 38,287 | -10,127 |
| IWM | 2026-09-30 | 290 | put | 14,688 | 4,581 | -10,107 |
| LYFT | 2027-03-19 | 13 | put | 31,436 | 21,436 | -10,000 |
| IWM | 2026-10-16 | 280 | put | 106,004 | 97,318 | -8,686 |
| QQQ | 2026-09-30 | 721 | call | 13,776 | 5,762 | -8,014 |
| SPX | 2026-10-02 | 8,000 | call | 18,025 | 10,086 | -7,939 |
| QQQ | 2026-09-30 | 715 | call | 10,628 | 3,048 | -7,580 |
| XLU | 2026-12-18 | 44 | call | 25,641 | 18,344 | -7,297 |
| QQQ | 2026-09-30 | 735 | call | 14,325 | 7,104 | -7,221 |

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

Increases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SPY | 2026-10-23 | 745 | put | 1,038 | 61,466 | +60,428 |
| SPY | 2026-10-23 | 725 | put | 1,988 | 62,404 | +60,416 |
| QQQ | 2026-09-30 | 736 | put | 21,750 | 60,352 | +38,602 |
| SPY | 2026-10-09 | 780 | call | 7,994 | 43,624 | +35,630 |
| SPY | 2026-10-09 | 725 | put | 46,452 | 78,584 | +32,132 |
| SPY | 2026-10-09 | 745 | put | 47,990 | 79,933 | +31,943 |
| QQQ | 2026-12-18 | 690 | put | 29,114 | 60,803 | +31,689 |
| SPY | 2026-10-09 | 785 | call | 75,860 | 104,817 | +28,957 |
| IWM | 2026-10-16 | 265 | put | 37,298 | 61,248 | +23,950 |
| QQQ | 2026-09-30 | 730 | put | 46,520 | 67,863 | +21,343 |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| QQQ | 2026-09-30 | 726 | call | 35,553 | 9,021 | -26,532 |
| QQQ | 2026-12-18 | 680 | put | 67,201 | 48,661 | -18,540 |
| SPY | 2026-10-16 | 732 | put | 72,155 | 58,210 | -13,945 |
| SPY | 2026-09-30 | 761 | put | 48,629 | 36,847 | -11,782 |
| IWM | 2026-09-30 | 285 | put | 41,457 | 30,281 | -11,176 |
| IWM | 2026-09-30 | 290 | put | 14,688 | 4,581 | -10,107 |
| IWM | 2026-10-16 | 280 | put | 106,004 | 97,318 | -8,686 |
| QQQ | 2026-09-30 | 721 | call | 13,776 | 5,762 | -8,014 |
| QQQ | 2026-09-30 | 715 | call | 10,628 | 3,048 | -7,580 |
| QQQ | 2026-09-30 | 735 | call | 14,325 | 7,104 | -7,221 |

## Single stocks

Increases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| BAC | 2026-10-02 | 54 | put | 4,581 | 27,387 | +22,806 |
| INTC | 2026-10-02 | 128 | call | 2,769 | 19,816 | +17,047 |
| AAPL | 2026-09-30 | 337.5 | call | 1,193 | 14,542 | +13,349 |
| WFC | 2026-10-02 | 80 | put | 9,023 | 21,511 | +12,488 |
| AAPL | 2026-09-30 | 335 | call | 1,968 | 11,968 | +10,000 |
| META | 2026-12-18 | 720 | put | 714 | 10,711 | +9,997 |
| RIVN | 2029-01-19 | 8 | put | 5,324 | 15,300 | +9,976 |
| CPNG | 2027-01-15 | 17 | call | 3,404 | 13,106 | +9,702 |
| SOFI | 2026-10-02 | 16 | call | 7,644 | 16,674 | +9,030 |
| MDT | 2026-10-16 | 90 | call | 5,348 | 13,228 | +7,880 |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| LYFT | 2027-03-19 | 13 | put | 31,436 | 21,436 | -10,000 |
| AMC | 2026-10-02 | 3 | put | 19,311 | 12,992 | -6,319 |
| AVGO | 2026-10-30 | 420 | call | 12,866 | 7,085 | -5,781 |
| META | 2028-01-21 | 1,020 | put | 10,045 | 4,554 | -5,491 |
| AAPL | 2026-10-02 | 350 | put | 5,424 | 514 | -4,910 |
| RIVN | 2028-01-21 | 12 | put | 31,931 | 27,080 | -4,851 |
| BAC | 2026-10-16 | 62.5 | put | 7,521 | 3,240 | -4,281 |
| TSLA | 2026-10-05 | 390 | call | 10,347 | 6,406 | -3,941 |
| MSTR | 2026-10-02 | 170 | call | 44,862 | 41,023 | -3,839 |
| TSLA | 2026-10-16 | 500 | call | 17,747 | 13,971 | -3,776 |

## Calls vs puts

| Type | Added | Removed | Net |
|---|---|---|---|
| Calls | +3,015,604 | -467,062 | +2,548,542 |
| Puts | +3,000,535 | -617,121 | +2,383,414 |

## 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 | 2026-10-23 | 745 | put | 1,038 | 61,466 | +60,428 | +5,821.6% |
| SPY | 2026-10-23 | 725 | put | 1,988 | 62,404 | +60,416 | +3,039% |
| TLT | 2026-11-06 | 78 | put | 1,006 | 16,525 | +15,519 | +1,542.6% |
| TLT | 2026-10-30 | 79 | put | 3,370 | 43,276 | +39,906 | +1,184.2% |
| AAPL | 2026-09-30 | 337.5 | call | 1,193 | 14,542 | +13,349 | +1,118.9% |
| SPX | 2026-10-09 | 6,800 | put | 1,153 | 13,672 | +12,519 | +1,085.8% |
| RIVN | 2026-10-30 | 16 | call | 1,061 | 8,137 | +7,076 | +666.9% |
| QQQ | 2026-09-30 | 605 | put | 1,579 | 11,802 | +10,223 | +647.4% |
| TLT | 2026-12-18 | 73 | put | 2,598 | 19,340 | +16,742 | +644.4% |
| INTC | 2026-10-02 | 128 | call | 2,769 | 19,816 | +17,047 | +615.6% |
| META | 2026-09-30 | 680 | put | 1,227 | 8,510 | +7,283 | +593.6% |
| XLE | 2026-11-20 | 50 | put | 1,930 | 12,967 | +11,037 | +571.9% |
| SPX | 2026-10-30 | 6,875 | put | 1,524 | 9,370 | +7,846 | +514.8% |
| AAPL | 2026-09-30 | 335 | call | 1,968 | 11,968 | +10,000 | +508.1% |
| BAC | 2026-10-02 | 54 | put | 4,581 | 27,387 | +22,806 | +497.8% |
| SPX | 2026-10-02 | 7,490 | put | 1,317 | 7,471 | +6,154 | +467.3% |
| QQQ | 2026-09-30 | 748 | call | 1,907 | 10,519 | +8,612 | +451.6% |
| SPY | 2026-10-09 | 780 | call | 7,994 | 43,624 | +35,630 | +445.7% |
| SPX | 2026-10-02 | 7,480 | put | 1,319 | 7,150 | +5,831 | +442.1% |
| SPY | 2026-10-09 | 790 | call | 3,697 | 19,851 | +16,154 | +436.9% |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change | Change % |
|---|---|---|---|---|---|---|---|
| IWM | 2027-12-17 | 350 | put | 1,500 | 0 | -1,500 | -100% |
| TSLA | 2026-10-16 | 450 | put | 3,360 | 5 | -3,355 | -99.9% |
| AAPL | 2026-10-02 | 347.5 | put | 1,741 | 1 | -1,740 | -99.9% |
| XLF | 2026-09-30 | 56 | put | 6,901 | 31 | -6,870 | -99.6% |
| BAC | 2026-10-02 | 59 | put | 2,887 | 15 | -2,872 | -99.5% |
| TLT | 2026-09-30 | 81 | put | 15,399 | 165 | -15,234 | -98.9% |
| SPY | 2026-09-30 | 776 | put | 1,142 | 26 | -1,116 | -97.7% |
| IWM | 2026-10-16 | 299 | put | 2,304 | 61 | -2,243 | -97.4% |
| AAPL | 2026-10-02 | 350 | put | 5,424 | 514 | -4,910 | -90.5% |
| AAPL | 2026-09-30 | 340 | put | 2,842 | 292 | -2,550 | -89.7% |
| XLF | 2027-03-19 | 61 | put | 33,566 | 3,822 | -29,744 | -88.6% |
| SPY | 2026-09-30 | 775 | put | 7,378 | 1,421 | -5,957 | -80.7% |
| TSLA | 2026-09-30 | 380 | put | 1,056 | 233 | -823 | -77.9% |
| IWM | 2026-10-16 | 300 | put | 4,875 | 1,183 | -3,692 | -75.7% |
| QQQ | 2026-09-30 | 726 | call | 35,553 | 9,021 | -26,532 | -74.6% |
| QQQ | 2026-09-30 | 715 | call | 10,628 | 3,048 | -7,580 | -71.3% |
| IWM | 2026-09-30 | 290 | put | 14,688 | 4,581 | -10,107 | -68.8% |
| TLT | 2026-09-30 | 80 | put | 45,180 | 15,912 | -29,268 | -64.8% |
| AMZN | 2028-01-21 | 350 | put | 5,076 | 1,904 | -3,172 | -62.5% |
| SPY | 2026-09-30 | 774 | put | 1,253 | 508 | -745 | -59.5% |

## Top strikes, summed across expirations

| Symbol | Strike | Type | Change | Expirations summed |
|---|---|---|---|---|
| TLT | 80 | call | +156,754 | 29 |
| SPY | 745 | put | +113,403 | 26 |
| SPY | 725 | put | +110,601 | 27 |
| TLT | 79 | call | +90,024 | 27 |
| TLT | 78 | call | +72,747 | 29 |
| SPX | 6,300 | put | +72,683 | 25 |
| SPX | 6,400 | put | +62,015 | 30 |
| SPX | 7,000 | put | +51,705 | 50 |
| IWM | 265 | put | +48,618 | 22 |
| TLT | 80 | put | -46,856 | 27 |
| SPX | 8,000 | put | +45,907 | 24 |
| SPX | 7,000 | call | +44,176 | 18 |
| QQQ | 690 | put | +41,378 | 23 |
| SPX | 8,000 | call | +41,061 | 50 |
| TLT | 79 | put | +40,486 | 26 |
| QQQ | 736 | put | +40,106 | 17 |
| SPY | 780 | call | +37,677 | 27 |
| TLT | 78 | put | +37,185 | 28 |
| TLT | 77 | put | +33,895 | 26 |
| TLT | 73 | put | +30,503 | 21 |

## Symbols by net change

Largest net increases:

| Symbol | Net change | Calls | Puts |
|---|---|---|---|
| SPX | +892,902 | +326,018 | +566,884 |
| SPY | +836,067 | +345,554 | +490,513 |
| TLT | +600,791 | +437,388 | +163,403 |
| QQQ | +425,438 | +116,831 | +308,607 |
| IWM | +211,827 | +107,057 | +104,770 |
| AAPL | +171,773 | +124,752 | +47,021 |
| TSLA | +169,320 | +105,357 | +63,963 |
| META | +148,792 | +95,575 | +53,217 |
| INTC | +123,932 | +83,566 | +40,366 |
| XLU | +118,356 | +62,991 | +55,365 |

Largest net decreases:

| Symbol | Net change | Calls | Puts |
|---|---|---|---|
| LYFT | -5,363 | +3,113 | -8,476 |
| ZM | -768 | -1,324 | +556 |
| KMI | -324 | +454 | -778 |
| CFG | -36 | -61 | +25 |

## 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/2026-09-29