"Appreciated stock" refers to a type of investment that has increased in value over time. It means that the stock you own has become more valuable than when you initially bought it. Full definition
Much of the reason for his low taxes stems from charitable giving, including donating appreciated stock. (alephblog.com)
As highlighted above, one strategy is to make a gift of appreciated stock. (regentatlantic.com)
Taxes: If your company is a C corporation, you run the risk of facing double taxation on appreciated stock held upon the liquidation of your company. (inc.com)