On the New York Stock Exchange, a stock that trades in lots of 10, instead of the usual 100. That is, if one orders a lot of a Post 30 stock, one will buy or sell 10 shares. These stocks are traded on an area of the NYSE known as Post 30, which has given its name to the stock type.
Post 30 stock
A stock listed on the New York Stock Exchange that is traded in ten-share units. The name derives from the location at which these stocks are traded on the exchange floor.