Wiktionary
alt. (present participle of day trade English) vb. (present participle of day trade English)
Wikipedia
Day trading is speculation in securities, specifically buying and selling financial instruments within the same trading day. Strictly, day trading is trading only within a day, such that all positions are closed before the market closes for the trading day. Many traders may not be so strict or may have day trading as one component of an overall strategy. Traders who participate in day trading are called day traders. Traders who trade in this capacity with the motive of profit are therefore speculators.
Some of the more commonly day-traded financial instruments are stocks, options, currencies, and a host of futures contracts such as equity index futures, interest rate futures, currency futures and commodity futures.
Day trading was once an activity that was exclusive to financial firms and professional speculators. Many day traders are bank or investment firm employees working as specialists in equity investment and fund management. However, with the advent of electronic trading and margin trading, day trading has become more common.
Usage examples of "day trading".
And this day trading is the opposite of that -- all they're doing is moving money around the board, and it multiplies but it's not even real, and nothing comes from it.
The two friends spent the rest of that day trading tales, with Drizzt, who had gone into so different a world, doing most of the talking.