How to read this ranking
52-Week Gain is the column the table is ordered by: the percentage change from the split-adjusted close one year ago to the latest close. Because the prices are split-adjusted, a split inside the window contributes nothing to the figure, and a company that split three-for-one shows the return its holders actually earned rather than a two-thirds fall.
Start Close is the split-adjusted close a year back that the gain is measured from, dated. Price is the latest close, the same close the gain is measured to, and Market Cap describes the company as it is today. A gain of several hundred percent takes far less buying on a small company than on a large one, so small companies can reach the top more easily, but large companies appear there too.
The board admits companies above $100 million in market capitalization listed on NYSE, Nasdaq and NYSE American, with no liquidity test and no price minimum. It leaves out preferred shares and other non-common equity, price histories with a gap of more than 30 days, symbols held for a data review, and symbols this site does not publish. A company needs a close a full year back to be measured at all, which is why a recent listing is absent here while it appears on the year-to-date board. Country and Sector come from each company's own record and are what to check first when a symbol near the top is unfamiliar.