Definition of open interest in English:

open interest

noun

Finance
  • [mass noun] The number of contracts or commitments outstanding in futures and options trading on an official exchange at any one time.

    • ‘Look at the futures open interest on December silver and it is over 74,000 contracts.’
    • ‘The gold open interest fell 901 contracts to 218, 161.’
    • ‘By ‘most’ I mean the largest possible proportion of open interest.’
    • ‘Today, the CBOE reported total option open interest of 58.7 million contracts, an increase of 9.7 million from year-end.’
    • ‘The gold open interest rose again, this time up 1549 contracts to 298, 149.’