Scalping
Very short-term trading: dozens of trades a day for fractions of a percent.
Scalpers open/close in seconds-minutes, taking 0.1-0.5% per trade. Needs low fees (Binance/Bybit VIP), high leverage, focus. Profit from volume - 50 trades x 0.3% = 15%/day at zero net exposure. Truth: 95% of scalpers lose to fees. Algo bots dominate.
In plain words
You catch 0.2-0.5% from hundreds of micro-moves a day. In practice 95% of manual scalpers lose to fees.
Example
BTC scalp bot: 1,200 trades/day, avg 0.04 BTC profit, fees 0.045 BTC = loss.
Also known as: scalp