# Biggest options open interest changes

OI settled 2026-10-19 vs 2026-10-16.

Computed from the Oct 19 settlement.

> Open interest change, not trades; it does not say which side opened or closed.

Source: SquawkFlow's own nightly archive of 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. 3 of those compared reported an identical book in both sessions.

Across the compared symbols: 103,998 contracts changed open interest, +7,787,091 added, -1,436,895 removed, net +6,350,196 contracts.

## Largest open interest increases (contracts)

| Ticker | Call/Put | Change | Strike | Expiry | DTE at settle | Prior OI | Current OI | Settled |
|---|---|---|---|---|---|---|---|---|
| SPY | Put | +57,038 | 760 | 2026-10-30 | 11 | 73,154 | 130,192 | 2026-10-19 |
| SPY | Put | +50,648 | 745 | 2026-10-30 | 11 | 74,291 | 124,939 | 2026-10-19 |
| IWM | Put | +30,131 | 258 | 2026-11-20 | 32 | 32,252 | 62,383 | 2026-10-19 |
| EWZ | Put | +30,084 | 38 | 2026-10-30 | 11 | 98,943 | 129,027 | 2026-10-19 |
| GOOGL | Call | +27,069 | 367.5 | 2026-11-20 | 32 | 0 | 27,069 | 2026-10-19 |
| AMZN | Call | +25,862 | 320 | 2026-11-20 | 32 | 8,507 | 34,369 | 2026-10-19 |
| IWM | Put | +25,022 | 259 | 2026-10-30 | 11 | 1,436 | 26,458 | 2026-10-19 |
| AMZN | Call | +24,939 | 290 | 2026-11-20 | 32 | 26,699 | 51,638 | 2026-10-19 |
| EWY | Call | +24,189 | 185 | 2026-12-18 | 60 | 3,886 | 28,075 | 2026-10-19 |
| EWZ | Call | +24,136 | 48 | 2026-10-30 | 11 | 397 | 24,533 | 2026-10-19 |
| EWZ | Call | +23,702 | 46 | 2026-11-20 | 32 | 103,570 | 127,272 | 2026-10-19 |
| GOOGL | Call | +23,514 | 415 | 2026-11-20 | 32 | 4,582 | 28,096 | 2026-10-19 |
| EWZ | Call | +23,245 | 50 | 2026-12-18 | 60 | 439,343 | 462,588 | 2026-10-19 |
| NFLX | Put | +20,625 | 58 | 2026-11-13 | 25 | 290 | 20,915 | 2026-10-19 |
| EWZ | Put | +20,573 | 41 | 2026-11-20 | 32 | 11,460 | 32,033 | 2026-10-19 |
| QQQ | Put | +20,390 | 630 | 2026-10-23 | 4 | 1,338 | 21,728 | 2026-10-19 |
| EWZ | Call | +20,202 | 44 | 2026-10-30 | 11 | 9,437 | 29,639 | 2026-10-19 |
| EWZ | Put | +20,050 | 34 | 2026-10-30 | 11 | 240,638 | 260,688 | 2026-10-19 |
| KO | Call | +19,159 | 90 | 2026-11-20 | 32 | 9,364 | 28,523 | 2026-10-19 |
| EWZ | Put | +17,752 | 40 | 2026-10-23 | 4 | 10,719 | 28,471 | 2026-10-19 |

DTE at settle counts calendar days from the settlement date, not from today.

## Largest open interest decreases (contracts)

| Ticker | Call/Put | Change | Strike | Expiry | DTE at settle | Prior OI | Current OI | Settled |
|---|---|---|---|---|---|---|---|---|
| WMT | Call | -66,504 | 120 | 2026-11-20 | 32 | 120,749 | 54,245 | 2026-10-19 |
| WMT | Call | -56,735 | 125 | 2026-11-20 | 32 | 115,946 | 59,211 | 2026-10-19 |
| SPY | Put | -47,930 | 750 | 2026-10-30 | 11 | 115,566 | 67,636 | 2026-10-19 |
| SPY | Put | -41,027 | 735 | 2026-10-30 | 11 | 95,224 | 54,197 | 2026-10-19 |
| EWZ | Call | -29,898 | 41 | 2026-11-20 | 32 | 187,574 | 157,676 | 2026-10-19 |
| EWZ | Put | -29,356 | 41.5 | 2026-10-23 | 4 | 54,169 | 24,813 | 2026-10-19 |
| TLT | Put | -22,497 | 77 | 2026-11-20 | 32 | 119,721 | 97,224 | 2026-10-19 |
| AMZN | Call | -17,865 | 260 | 2026-11-20 | 32 | 36,179 | 18,314 | 2026-10-19 |
| SNAP | Call | -16,574 | 8 | 2026-12-18 | 60 | 39,119 | 22,545 | 2026-10-19 |
| AMZN | Call | -16,566 | 305 | 2026-11-20 | 32 | 32,416 | 15,850 | 2026-10-19 |
| XLF | Put | -15,934 | 53 | 2026-11-20 | 32 | 131,262 | 115,328 | 2026-10-19 |
| IWM | Put | -14,501 | 257 | 2026-11-20 | 32 | 44,947 | 30,446 | 2026-10-19 |
| QQQ | Put | -14,077 | 700 | 2026-10-30 | 11 | 103,867 | 89,790 | 2026-10-19 |
| XLE | Call | -12,213 | 62.5 | 2026-12-18 | 60 | 35,885 | 23,672 | 2026-10-19 |
| QQQ | Put | -12,145 | 675 | 2026-10-30 | 11 | 66,889 | 54,744 | 2026-10-19 |
| IWM | Put | -11,544 | 265 | 2026-10-30 | 11 | 46,966 | 35,422 | 2026-10-19 |
| QQQ | Call | -11,182 | 760 | 2026-11-20 | 32 | 43,370 | 32,188 | 2026-10-19 |
| XLE | Call | -10,966 | 70 | 2026-11-20 | 32 | 78,866 | 67,900 | 2026-10-19 |
| XLF | Call | -10,365 | 57 | 2026-11-20 | 32 | 32,243 | 21,878 | 2026-10-19 |
| ORCL | Call | -8,746 | 160 | 2026-10-23 | 4 | 28,198 | 19,452 | 2026-10-19 |

DTE at settle counts calendar days from the settlement date, not from today.

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

Increases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SPY | 2026-10-30 | 760 | put | 73,154 | 130,192 | +57,038 |
| SPY | 2026-10-30 | 745 | put | 74,291 | 124,939 | +50,648 |
| IWM | 2026-11-20 | 258 | put | 32,252 | 62,383 | +30,131 |
| IWM | 2026-10-30 | 259 | put | 1,436 | 26,458 | +25,022 |
| QQQ | 2026-10-23 | 630 | put | 1,338 | 21,728 | +20,390 |
| QQQ | 2027-02-19 | 450 | put | 570 | 16,130 | +15,560 |
| IWM | 2026-10-29 | 280 | call | 216 | 15,157 | +14,941 |
| QQQ | 2026-10-20 | 725 | call | 3,241 | 16,842 | +13,601 |
| SPY | 2026-10-23 | 762 | put | 1,898 | 15,333 | +13,435 |
| SPY | 2026-10-20 | 745 | put | 1,591 | 14,779 | +13,188 |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| SPY | 2026-10-30 | 750 | put | 115,566 | 67,636 | -47,930 |
| SPY | 2026-10-30 | 735 | put | 95,224 | 54,197 | -41,027 |
| IWM | 2026-11-20 | 257 | put | 44,947 | 30,446 | -14,501 |
| QQQ | 2026-10-30 | 700 | put | 103,867 | 89,790 | -14,077 |
| QQQ | 2026-10-30 | 675 | put | 66,889 | 54,744 | -12,145 |
| IWM | 2026-10-30 | 265 | put | 46,966 | 35,422 | -11,544 |
| QQQ | 2026-11-20 | 760 | call | 43,370 | 32,188 | -11,182 |
| QQQ | 2026-10-23 | 740 | call | 16,040 | 9,551 | -6,489 |
| QQQ | 2026-10-30 | 750 | call | 18,432 | 12,104 | -6,328 |
| QQQ | 2026-11-20 | 680 | put | 46,763 | 40,847 | -5,916 |

## Single stocks

Increases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| GOOGL | 2026-11-20 | 367.5 | call | 0 | 27,069 | +27,069 |
| AMZN | 2026-11-20 | 320 | call | 8,507 | 34,369 | +25,862 |
| AMZN | 2026-11-20 | 290 | call | 26,699 | 51,638 | +24,939 |
| GOOGL | 2026-11-20 | 415 | call | 4,582 | 28,096 | +23,514 |
| NFLX | 2026-11-13 | 58 | put | 290 | 20,915 | +20,625 |
| KO | 2026-11-20 | 90 | call | 9,364 | 28,523 | +19,159 |
| NVDA | 2027-01-15 | 235 | call | 24,781 | 40,402 | +15,621 |
| SPCX | 2026-10-23 | 170 | call | 5,848 | 21,371 | +15,523 |
| BAC | 2026-11-20 | 46 | put | 3,124 | 17,691 | +14,567 |
| PFE | 2026-10-23 | 29.5 | put | 660 | 14,967 | +14,307 |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| WMT | 2026-11-20 | 120 | call | 120,749 | 54,245 | -66,504 |
| WMT | 2026-11-20 | 125 | call | 115,946 | 59,211 | -56,735 |
| AMZN | 2026-11-20 | 260 | call | 36,179 | 18,314 | -17,865 |
| SNAP | 2026-12-18 | 8 | call | 39,119 | 22,545 | -16,574 |
| AMZN | 2026-11-20 | 305 | call | 32,416 | 15,850 | -16,566 |
| ORCL | 2026-10-23 | 160 | call | 28,198 | 19,452 | -8,746 |
| SPCX | 2026-10-30 | 190 | call | 42,264 | 35,730 | -6,534 |
| CLOV | 2026-10-23 | 4.5 | put | 12,263 | 6,270 | -5,993 |
| BAC | 2026-11-20 | 57.5 | put | 7,010 | 2,060 | -4,950 |
| SPCE | 2026-10-30 | 3 | call | 7,205 | 2,495 | -4,710 |

## Calls vs puts

| Type | Added | Removed | Net |
|---|---|---|---|
| Calls | +3,832,534 | -741,222 | +3,091,312 |
| Puts | +3,954,557 | -695,673 | +3,258,884 |

## 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 % |
|---|---|---|---|---|---|---|---|
| IWM | 2026-10-30 | 259 | put | 1,436 | 26,458 | +25,022 | +1,742.5% |
| QQQ | 2026-10-23 | 630 | put | 1,338 | 21,728 | +20,390 | +1,523.9% |
| SPX | 2026-10-20 | 7,450 | put | 1,084 | 14,764 | +13,680 | +1,262% |
| SPX | 2026-10-20 | 7,350 | put | 1,236 | 14,259 | +13,023 | +1,053.6% |
| TSLA | 2026-10-23 | 120 | put | 1,041 | 11,840 | +10,799 | +1,037.4% |
| SPY | 2026-10-23 | 560 | put | 1,145 | 10,785 | +9,640 | +841.9% |
| SPY | 2026-10-20 | 745 | put | 1,591 | 14,779 | +13,188 | +828.9% |
| XLP | 2026-11-20 | 81 | put | 1,214 | 10,115 | +8,901 | +733.2% |
| SPY | 2026-10-23 | 762 | put | 1,898 | 15,333 | +13,435 | +707.9% |
| SPY | 2026-10-20 | 771 | call | 1,340 | 10,802 | +9,462 | +706.1% |
| SPY | 2026-10-20 | 758 | put | 1,039 | 8,313 | +7,274 | +700.1% |
| QQQ | 2026-10-20 | 715 | put | 1,333 | 10,260 | +8,927 | +669.7% |
| EWY | 2026-12-18 | 185 | call | 3,886 | 28,075 | +24,189 | +622.5% |
| SPY | 2026-10-20 | 765 | put | 1,491 | 10,247 | +8,756 | +587.3% |
| QQQ | 2026-10-20 | 720 | put | 1,015 | 6,482 | +5,467 | +538.6% |
| SPY | 2026-10-23 | 665 | put | 1,104 | 6,914 | +5,810 | +526.3% |
| GOOGL | 2026-11-20 | 415 | call | 4,582 | 28,096 | +23,514 | +513.2% |
| SPX | 2026-10-20 | 7,500 | put | 1,165 | 6,767 | +5,602 | +480.9% |
| BAC | 2026-11-20 | 46 | put | 3,124 | 17,691 | +14,567 | +466.3% |
| ABT | 2028-01-21 | 90 | put | 1,061 | 6,000 | +4,939 | +465.5% |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change | Change % |
|---|---|---|---|---|---|---|---|
| NVDA | 2026-10-23 | 240 | put | 2,653 | 31 | -2,622 | -98.8% |
| SPY | 2026-10-20 | 776 | put | 1,465 | 30 | -1,435 | -98% |
| CRWD | 2026-10-23 | 270 | put | 1,907 | 41 | -1,866 | -97.9% |
| INTC | 2026-10-23 | 115 | put | 1,244 | 61 | -1,183 | -95.1% |
| NVDA | 2026-10-23 | 237.5 | put | 1,342 | 165 | -1,177 | -87.7% |
| QQQ | 2026-10-23 | 745 | put | 1,892 | 242 | -1,650 | -87.2% |
| SPX | 2026-11-06 | 6,700 | put | 3,644 | 728 | -2,916 | -80% |
| RIVN | 2026-10-23 | 15 | put | 1,423 | 305 | -1,118 | -78.6% |
| IWM | 2026-10-26 | 278 | call | 2,628 | 581 | -2,047 | -77.9% |
| SPX | 2026-10-22 | 7,775 | put | 4,126 | 957 | -3,169 | -76.8% |
| BAC | 2026-11-20 | 57.5 | put | 7,010 | 2,060 | -4,950 | -70.6% |
| SPX | 2026-10-22 | 7,800 | put | 4,480 | 1,327 | -3,153 | -70.4% |
| SPY | 2026-10-20 | 775 | put | 1,236 | 368 | -868 | -70.2% |
| SPCE | 2026-10-30 | 3 | call | 7,205 | 2,495 | -4,710 | -65.4% |
| ORCL | 2026-11-20 | 190 | put | 2,115 | 740 | -1,375 | -65% |
| NBIS | 2026-10-23 | 220 | put | 3,393 | 1,191 | -2,202 | -64.9% |
| SLV | 2026-10-23 | 58 | put | 3,433 | 1,247 | -2,186 | -63.7% |
| EWY | 2026-11-06 | 200 | call | 1,459 | 561 | -898 | -61.5% |
| SPCX | 2026-12-18 | 60 | put | 4,607 | 1,925 | -2,682 | -58.2% |
| SPX | 2026-10-22 | 7,750 | put | 4,168 | 1,798 | -2,370 | -56.9% |

## Top strikes, summed across expirations

| Symbol | Strike | Type | Change | Expirations summed |
|---|---|---|---|---|
| SPY | 760 | put | +68,542 | 29 |
| WMT | 120 | call | -64,641 | 11 |
| SPY | 745 | put | +63,517 | 23 |
| WMT | 125 | call | -54,143 | 13 |
| EWZ | 38 | put | +44,034 | 8 |
| EWZ | 50 | call | +39,835 | 9 |
| SPY | 750 | put | -35,955 | 27 |
| EWZ | 44 | call | +35,180 | 7 |
| EWZ | 48 | call | +34,579 | 8 |
| SPY | 735 | put | -30,836 | 25 |
| IWM | 258 | put | +30,644 | 8 |
| IWM | 259 | put | +30,520 | 7 |
| AMZN | 290 | call | +29,740 | 21 |
| EWZ | 41 | call | -29,328 | 7 |
| EWZ | 41.5 | put | -29,016 | 3 |
| EWZ | 46 | call | +28,495 | 8 |
| AMZN | 320 | call | +27,757 | 17 |
| SPY | 762 | put | +27,422 | 16 |
| GOOGL | 367.5 | call | +27,372 | 6 |
| QQQ | 725 | call | +27,292 | 28 |

## Symbols by net change

Largest net increases:

| Symbol | Net change | Calls | Puts |
|---|---|---|---|
| SPY | +643,531 | +201,655 | +441,876 |
| SPX | +634,258 | +251,725 | +382,533 |
| QQQ | +545,835 | +157,774 | +388,061 |
| EWZ | +335,566 | +172,726 | +162,840 |
| NVDA | +323,698 | +173,981 | +149,717 |
| IWM | +266,536 | +116,480 | +150,056 |
| SPCX | +172,123 | +103,434 | +68,689 |
| AMZN | +159,643 | +113,590 | +46,053 |
| TSLA | +151,796 | +81,618 | +70,178 |
| NFLX | +132,173 | +54,242 | +77,931 |

Largest net decreases:

| Symbol | Net change | Calls | Puts |
|---|---|---|---|
| WMT | -97,745 | -106,128 | +8,383 |
| SNAP | -2,022 | -5,044 | +3,022 |
| EWJ | -1,208 | +95 | -1,303 |
| XLRE | -524 | +209 | -733 |
| MQ | -5 | -6 | +1 |

## Archive

- https://squawkflow.com/oi-changes/2026-10-29.md (2026-10-29 vs 2026-10-28, 212 symbols)
- https://squawkflow.com/oi-changes/2026-10-28.md (2026-10-28 vs 2026-10-27, 212 symbols)
- https://squawkflow.com/oi-changes/2026-10-27.md (2026-10-27 vs 2026-10-26, 212 symbols)
- https://squawkflow.com/oi-changes/2026-10-26.md (2026-10-26 vs 2026-10-23, 212 symbols)
- https://squawkflow.com/oi-changes/2026-10-23.md (2026-10-23 vs 2026-10-22, 212 symbols)
- https://squawkflow.com/oi-changes/2026-10-22.md (2026-10-22 vs 2026-10-21, 212 symbols)
- https://squawkflow.com/oi-changes/2026-10-21.md (2026-10-21 vs 2026-10-20, 212 symbols)
- https://squawkflow.com/oi-changes/2026-10-20.md (2026-10-20 vs 2026-10-19, 212 symbols)
- https://squawkflow.com/oi-changes/2026-10-19.md (2026-10-19 vs 2026-10-16, 212 symbols)
- https://squawkflow.com/oi-changes/2026-10-16.md (2026-10-16 vs 2026-10-15, 212 symbols)

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

Canonical: https://squawkflow.com/oi-changes/2026-10-19