Stocks trade on multiple markets, but the listing venue has a unique responsibility to:
There is no single metric to measure market quality. Corporate issuers should consider various metrics when evaluating performance, including liquidity, the tightness of the bid-ask spread, the duration and size of the quote at the best prices, and other factors. See NYSE’s results below.
* Calculated using Enhanced Quoted Spread (EQS). EQS methodology is described here.
Source: NYSE Internal Database and Consolidated Tape Statistics, March 31, 2020
Data includes top 10 exchanges in all categories.
Includes NYSE Listed Securities only.