$NDX Open Interest
NASDAQ 100 ($NDX) had 215.43K open option contracts as of Nov 13, 2026: 95.34K calls and 120.1K puts. Open interest was little changed over the past four weeks, and is $NDX's highest level in 12 weeks. The put/call open interest ratio is 1.26, which signals bearish sentiment.
Open Interest by Strike
Showing results for $NDX, 2026-12-18(w), calls & puts
Open Interest Stats
Showing results for $NDX, 2026-12-18(w), calls & puts
| Call Open Interest Total | 399 |
|---|---|
| Put Open Interest Total | 5,182 |
| Open Interest Total | 5,581 |
| Put-Call Open Interest Ratio | 12.99 |
Highest Open Interest Options
Showing results for $NDX, 2026-12-18(w), calls & puts
Open Interest Total by Expiry
Showing results for $NDX, 2026-12-18(w), calls & puts. View all expiries
Open Interest History
Showing daily totals for $NDX, all expirations, calls & puts. View full history
$NDX Open Interest FAQ
What is open interest?
Open interest is the number of option contracts that are open and not yet closed, exercised, or expired. The Options Clearing Corporation calculates it once a day from the previous day's trades, and it is published before the market opens.
How much open interest does $NDX have?
$NDX had 215.43K open option contracts as of Nov 13, 2026. Over the past 30 days, open interest averaged 196.32K contracts.
Is $NDX open interest rising or falling?
Open interest was little changed over the past four weeks, and is $NDX's highest level in 12 weeks. It was 213.48K contracts on Oct 16, 2026. See the $NDX open interest history for a longer view.
What is the $NDX put/call open interest ratio?
The $NDX put/call open interest ratio was 1.26 as of Nov 13, 2026. Four weeks earlier it was 1.52.