# Biggest options open interest changes

OI settled 2026-10-16 vs 2026-10-15.

Computed from the Oct 16 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. 14 of those compared reported an identical book in both sessions.

Across the compared symbols: 106,369 contracts changed open interest, +11,173,881 added, -1,543,250 removed, net +9,630,631 contracts.

## Largest open interest increases (contracts)

| Ticker | Call/Put | Change | Strike | Expiry | DTE at settle | Prior OI | Current OI | Settled |
|---|---|---|---|---|---|---|---|---|
| SPY | Put | +87,207 | 750 | 2026-10-30 | 14 | 28,359 | 115,566 | 2026-10-16 |
| SPY | Put | +81,040 | 735 | 2026-10-30 | 14 | 14,184 | 95,224 | 2026-10-16 |
| QQQ | Put | +55,157 | 675 | 2026-10-30 | 14 | 11,732 | 66,889 | 2026-10-16 |
| IWM | Put | +52,032 | 260 | 2026-10-30 | 14 | 27,217 | 79,249 | 2026-10-16 |
| IWM | Put | +46,733 | 250 | 2026-10-30 | 14 | 1,182 | 47,915 | 2026-10-16 |
| IWM | Put | +39,297 | 257 | 2026-11-20 | 35 | 5,650 | 44,947 | 2026-10-16 |
| EWY | Put | +37,009 | 100 | 2027-04-16 | 182 | 212 | 37,221 | 2026-10-16 |
| NU | Put | +35,365 | 13 | 2026-11-20 | 35 | 27,152 | 62,517 | 2026-10-16 |
| SPY | Put | +33,305 | 510 | 2026-10-30 | 14 | 3,002 | 36,307 | 2026-10-16 |
| TLT | Call | +32,950 | 80 | 2026-10-23 | 7 | 10,682 | 43,632 | 2026-10-16 |
| NVDA | Call | +32,877 | 220 | 2026-10-23 | 7 | 12,338 | 45,215 | 2026-10-16 |
| NVDA | Call | +32,624 | 222.5 | 2026-10-23 | 7 | 3,184 | 35,808 | 2026-10-16 |
| TLT | Put | +31,897 | 75 | 2026-11-20 | 35 | 78,246 | 110,143 | 2026-10-16 |
| NVDA | Call | +29,773 | 230 | 2026-10-23 | 7 | 17,632 | 47,405 | 2026-10-16 |
| SPY | Put | +29,176 | 515 | 2026-10-30 | 14 | 657 | 29,833 | 2026-10-16 |
| NVDA | Call | +28,017 | 227.5 | 2026-10-23 | 7 | 13,531 | 41,548 | 2026-10-16 |
| QQQ | Put | +27,707 | 690 | 2026-10-30 | 14 | 42,111 | 69,818 | 2026-10-16 |
| TLT | Put | +26,658 | 77 | 2026-11-20 | 35 | 93,063 | 119,721 | 2026-10-16 |
| TLT | Call | +25,926 | 80.5 | 2026-10-23 | 7 | 7,051 | 32,977 | 2026-10-16 |
| SPX | Put | +25,064 | 4,000 | 2027-12-17 | 427 | 51,087 | 76,151 | 2026-10-16 |

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 |
|---|---|---|---|---|---|---|---|---|
| NVDA | Call | -70,096 | 295 | 2026-11-20 | 35 | 89,611 | 19,515 | 2026-10-16 |
| NVDA | Call | -69,594 | 245 | 2026-11-20 | 35 | 117,411 | 47,817 | 2026-10-16 |
| QQQ | Put | -63,733 | 715 | 2026-10-30 | 14 | 95,625 | 31,892 | 2026-10-16 |
| PLTR | Put | -23,227 | 140 | 2026-12-18 | 63 | 93,615 | 70,388 | 2026-10-16 |
| TLT | Call | -19,929 | 90 | 2026-12-18 | 63 | 307,978 | 288,049 | 2026-10-16 |
| QQQ | Put | -16,158 | 640 | 2026-10-30 | 14 | 43,237 | 27,079 | 2026-10-16 |
| SPX | Put | -13,719 | 3,800 | 2027-06-17 | 244 | 26,146 | 12,427 | 2026-10-16 |
| NIO | Put | -13,470 | 5 | 2026-11-20 | 35 | 25,622 | 12,152 | 2026-10-16 |
| GLD | Put | -12,007 | 335 | 2027-01-15 | 91 | 82,332 | 70,325 | 2026-10-16 |
| GLD | Put | -11,991 | 330 | 2027-01-15 | 91 | 75,813 | 63,822 | 2026-10-16 |
| SPX | Put | -10,566 | 7,650 | 2026-10-30 | 14 | 32,124 | 21,558 | 2026-10-16 |
| NIO | Call | -9,259 | 7 | 2027-01-15 | 91 | 208,514 | 199,255 | 2026-10-16 |
| TLT | Call | -8,951 | 87 | 2028-01-21 | 462 | 64,622 | 55,671 | 2026-10-16 |
| TLT | Call | -8,295 | 88 | 2027-02-19 | 126 | 10,607 | 2,312 | 2026-10-16 |
| IWM | Put | -7,629 | 262 | 2026-11-20 | 35 | 53,281 | 45,652 | 2026-10-16 |
| TLT | Call | -7,102 | 84 | 2026-12-18 | 63 | 107,576 | 100,474 | 2026-10-16 |
| QQQ | Call | -7,090 | 800 | 2026-12-18 | 63 | 53,878 | 46,788 | 2026-10-16 |
| TLT | Call | -6,613 | 82 | 2026-12-18 | 63 | 61,576 | 54,963 | 2026-10-16 |
| SPY | Put | -6,588 | 734 | 2026-11-20 | 35 | 22,198 | 15,610 | 2026-10-16 |
| TLT | Call | -6,048 | 91 | 2027-02-19 | 126 | 23,645 | 17,597 | 2026-10-16 |

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 | 750 | put | 28,359 | 115,566 | +87,207 |
| SPY | 2026-10-30 | 735 | put | 14,184 | 95,224 | +81,040 |
| QQQ | 2026-10-30 | 675 | put | 11,732 | 66,889 | +55,157 |
| IWM | 2026-10-30 | 260 | put | 27,217 | 79,249 | +52,032 |
| IWM | 2026-10-30 | 250 | put | 1,182 | 47,915 | +46,733 |
| IWM | 2026-11-20 | 257 | put | 5,650 | 44,947 | +39,297 |
| SPY | 2026-10-30 | 510 | put | 3,002 | 36,307 | +33,305 |
| SPY | 2026-10-30 | 515 | put | 657 | 29,833 | +29,176 |
| QQQ | 2026-10-30 | 690 | put | 42,111 | 69,818 | +27,707 |
| QQQ | 2026-11-20 | 705 | put | 10,324 | 34,872 | +24,548 |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| QQQ | 2026-10-30 | 715 | put | 95,625 | 31,892 | -63,733 |
| QQQ | 2026-10-30 | 640 | put | 43,237 | 27,079 | -16,158 |
| IWM | 2026-11-20 | 262 | put | 53,281 | 45,652 | -7,629 |
| QQQ | 2026-12-18 | 800 | call | 53,878 | 46,788 | -7,090 |
| SPY | 2026-11-20 | 734 | put | 22,198 | 15,610 | -6,588 |
| IWM | 2026-12-18 | 330 | call | 51,344 | 45,456 | -5,888 |
| SPY | 2026-10-30 | 742 | put | 12,999 | 7,142 | -5,857 |
| QQQ | 2026-10-23 | 750 | call | 17,332 | 11,757 | -5,575 |
| IWM | 2026-11-20 | 261 | put | 31,276 | 25,874 | -5,402 |
| QQQ | 2026-10-30 | 725 | put | 31,344 | 26,557 | -4,787 |

## Single stocks

Increases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| NU | 2026-11-20 | 13 | put | 27,152 | 62,517 | +35,365 |
| NVDA | 2026-10-23 | 220 | call | 12,338 | 45,215 | +32,877 |
| NVDA | 2026-10-23 | 222.5 | call | 3,184 | 35,808 | +32,624 |
| NVDA | 2026-10-23 | 230 | call | 17,632 | 47,405 | +29,773 |
| NVDA | 2026-10-23 | 227.5 | call | 13,531 | 41,548 | +28,017 |
| MSTR | 2026-10-23 | 148 | call | 174 | 23,820 | +23,646 |
| TSLA | 2026-10-23 | 130 | put | 1,545 | 24,561 | +23,016 |
| CMG | 2026-11-06 | 25 | put | 35,573 | 56,246 | +20,673 |
| MU | 2026-10-23 | 550 | put | 336 | 20,586 | +20,250 |
| AAPL | 2026-10-23 | 195 | put | 147 | 19,129 | +18,982 |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change |
|---|---|---|---|---|---|---|
| NVDA | 2026-11-20 | 295 | call | 89,611 | 19,515 | -70,096 |
| NVDA | 2026-11-20 | 245 | call | 117,411 | 47,817 | -69,594 |
| PLTR | 2026-12-18 | 140 | put | 93,615 | 70,388 | -23,227 |
| NIO | 2026-11-20 | 5 | put | 25,622 | 12,152 | -13,470 |
| NIO | 2027-01-15 | 7 | call | 208,514 | 199,255 | -9,259 |
| META | 2026-11-20 | 900 | call | 16,666 | 11,317 | -5,349 |
| AVGO | 2027-01-15 | 740 | call | 9,858 | 4,538 | -5,320 |
| ORCL | 2026-10-23 | 160 | call | 33,186 | 28,198 | -4,988 |
| NBIS | 2027-01-15 | 290 | call | 7,738 | 2,875 | -4,863 |
| NOW | 2027-06-17 | 85 | put | 8,860 | 4,279 | -4,581 |

## Calls vs puts

| Type | Added | Removed | Net |
|---|---|---|---|
| Calls | +4,970,519 | -797,016 | +4,173,503 |
| Puts | +6,203,362 | -746,234 | +5,457,128 |

## 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 | 250 | put | 1,182 | 47,915 | +46,733 | +3,953.7% |
| SPX | 2027-01-15 | 5,200 | put | 1,149 | 20,847 | +19,698 | +1,714.4% |
| SPY | 2026-10-30 | 739 | put | 1,007 | 16,499 | +15,492 | +1,538.4% |
| TSLA | 2026-10-23 | 130 | put | 1,545 | 24,561 | +23,016 | +1,489.7% |
| SPY | 2026-10-21 | 741 | put | 1,153 | 15,672 | +14,519 | +1,259.2% |
| SPY | 2026-10-30 | 510 | put | 3,002 | 36,307 | +33,305 | +1,109.4% |
| XLE | 2026-10-19 | 68 | call | 1,073 | 12,871 | +11,798 | +1,099.5% |
| SPX | 2026-10-19 | 7,650 | put | 1,253 | 14,790 | +13,537 | +1,080.4% |
| NVDA | 2026-10-23 | 160 | put | 1,389 | 15,676 | +14,287 | +1,028.6% |
| NVDA | 2026-10-23 | 222.5 | call | 3,184 | 35,808 | +32,624 | +1,024.6% |
| INTC | 2026-10-30 | 55 | put | 1,138 | 12,250 | +11,112 | +976.4% |
| PLTR | 2026-10-23 | 190 | call | 1,106 | 11,370 | +10,264 | +928% |
| PLTR | 2026-10-23 | 195 | call | 1,432 | 13,623 | +12,191 | +851.3% |
| SPY | 2026-10-23 | 744 | put | 1,107 | 10,268 | +9,161 | +827.6% |
| QQQ | 2026-10-19 | 690 | put | 1,318 | 11,432 | +10,114 | +767.4% |
| MSTR | 2026-10-23 | 70 | put | 1,511 | 12,552 | +11,041 | +730.7% |
| SPX | 2027-01-15 | 3,600 | put | 2,501 | 20,489 | +17,988 | +719.2% |
| IWM | 2026-10-19 | 270 | put | 1,832 | 14,861 | +13,029 | +711.2% |
| IWM | 2026-11-20 | 257 | put | 5,650 | 44,947 | +39,297 | +695.5% |
| SPX | 2026-12-18 | 8,425 | call | 1,110 | 8,480 | +7,370 | +664% |

Decreases:

| Symbol | Expiry | Strike | Type | Prior OI | Current OI | Change | Change % |
|---|---|---|---|---|---|---|---|
| SPY | 2026-10-19 | 779 | put | 1,074 | 7 | -1,067 | -99.3% |
| SPY | 2026-10-19 | 778 | put | 1,858 | 15 | -1,843 | -99.2% |
| QQQ | 2026-11-20 | 780 | put | 1,097 | 12 | -1,085 | -98.9% |
| QQQ | 2027-02-19 | 820 | put | 3,178 | 72 | -3,106 | -97.7% |
| SPY | 2026-10-19 | 780 | put | 1,494 | 34 | -1,460 | -97.7% |
| QQQ | 2026-10-23 | 753 | put | 1,350 | 33 | -1,317 | -97.6% |
| SPY | 2026-10-19 | 777 | put | 2,160 | 59 | -2,101 | -97.3% |
| SPY | 2026-10-20 | 777 | put | 1,397 | 52 | -1,345 | -96.3% |
| SPY | 2026-10-23 | 785 | put | 1,748 | 133 | -1,615 | -92.4% |
| NU | 2027-03-19 | 12 | call | 2,371 | 274 | -2,097 | -88.4% |
| NVDA | 2026-11-20 | 295 | call | 89,611 | 19,515 | -70,096 | -78.2% |
| TLT | 2027-02-19 | 88 | call | 10,607 | 2,312 | -8,295 | -78.2% |
| IWM | 2026-11-20 | 295 | put | 1,076 | 235 | -841 | -78.2% |
| WFC | 2026-10-23 | 79 | call | 4,157 | 958 | -3,199 | -77% |
| SPY | 2026-10-19 | 775 | put | 2,118 | 488 | -1,630 | -77% |
| SPY | 2026-10-19 | 776 | put | 1,507 | 382 | -1,125 | -74.7% |
| SPX | 2026-11-20 | 7,705 | call | 1,791 | 469 | -1,322 | -73.8% |
| INTC | 2026-10-23 | 120 | put | 1,304 | 402 | -902 | -69.2% |
| GRAB | 2026-10-23 | 3.5 | put | 1,000 | 310 | -690 | -69% |
| QQQ | 2026-10-30 | 715 | put | 95,625 | 31,892 | -63,733 | -66.6% |

## Top strikes, summed across expirations

| Symbol | Strike | Type | Change | Expirations summed |
|---|---|---|---|---|
| SPY | 750 | put | +105,858 | 31 |
| SPY | 735 | put | +89,159 | 27 |
| IWM | 260 | put | +85,923 | 24 |
| QQQ | 675 | put | +74,412 | 25 |
| NVDA | 245 | call | -70,196 | 23 |
| NVDA | 295 | call | -70,014 | 16 |
| IWM | 250 | put | +69,236 | 26 |
| SPX | 7,000 | put | +57,582 | 47 |
| NVDA | 220 | call | +56,555 | 24 |
| NVDA | 230 | call | +53,584 | 24 |
| QQQ | 715 | put | -53,479 | 26 |
| QQQ | 690 | put | +52,778 | 26 |
| QQQ | 700 | put | +51,645 | 30 |
| SPX | 7,000 | call | +48,874 | 22 |
| QQQ | 705 | put | +46,054 | 25 |
| SPY | 510 | put | +40,679 | 13 |
| NVDA | 222.5 | call | +40,028 | 6 |
| IWM | 257 | put | +39,396 | 8 |
| TLT | 75 | put | +37,888 | 19 |
| TLT | 80.5 | call | +37,712 | 8 |

## Symbols by net change

Largest net increases:

| Symbol | Net change | Calls | Puts |
|---|---|---|---|
| SPY | +1,481,187 | +460,708 | +1,020,479 |
| SPX | +1,098,855 | +351,924 | +746,931 |
| QQQ | +999,666 | +434,689 | +564,977 |
| IWM | +549,720 | +142,885 | +406,835 |
| NVDA | +442,152 | +139,179 | +302,973 |
| TSLA | +325,998 | +176,743 | +149,255 |
| SPCX | +245,418 | +88,340 | +157,078 |
| AAPL | +229,121 | +92,788 | +136,333 |
| INTC | +224,031 | +120,734 | +103,297 |
| MU | +201,101 | +69,358 | +131,743 |

Largest net decreases:

| Symbol | Net change | Calls | Puts |
|---|---|---|---|
| NIO | -16,639 | -5,024 | -11,615 |
| FIS | -421 | -437 | +16 |
| PNC | -177 | +102 | -279 |
| TFC | -78 | +83 | -161 |

## 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/2026-10-16