Alan Ellman's Selling Cash-Secured Puts Quotes

“Open Interest (OI): An even better indicator for option liquidity is open interest. This is the number of outstanding options of that type which currently have not been closed out or exercised. This statistic is cumulative and gives us an accurate idea of investor interest in that particular contract. Like Vol, a higher OI means greater liquidity which generally results in better pricing for our buy/sell trades.”
― Barbara Karnes, Alan Ellman's Selling Cash-Secured Puts: Investing to Generate Monthly Cash Flow