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Looking at Options Liquidity: what makes some stocks so attractive for options traders?
The penny pilot program has a dramatic effect on increasing options liquidity. Bids can be posted at .01 penny increments instead of .05 increments. A lot of money is lost dealing with .05 increments. Issues are added to the penny pilot program based on existing liquidity in both the stock and the options market, but the utility of the penny pilot program outweighs the discretionary liquidity judgement that the CBOE makes to list issues in that program. The reason the CBOE doesn't list all stocks in the penny pilot program is because they believe that their data vendors cannot handle all of the market data. But they have been saying this since 2006 and storage and bandwidth technology has greatly improved since then.