GLOSSARY // Day Trading

Scalping

Scalping targets many small gains — a few cents to a fraction of a percent per trade — with hold times measured in seconds to minutes. A scalper might take 30-100 trades in a session, exploiting micro-moves that longer-timeframe traders ignore entirely.

At that frequency the cost structure is the strategy. A scalper netting 8 cents per winner cannot survive a 5-cent spread or sloppy fills, so the style demands liquid names, direct-access routing, hotkeys, and commission plans built for volume. It is also where the PDT rule bites hardest: the trade count that defines the style requires either $25,000+ in a margin account or workarounds like a cash account with settled-funds limits.

worked example

A scalper trades a liquid large cap oscillating in a $184.20-$184.60 range, buying the bottom of the band and selling 15-25 cents higher with 2,000-share size. Across 40 round trips: 26 winners averaging +$0.18, 14 losers averaging -$0.09 — roughly $6,800 gross on the day, with execution costs deciding how much survives.

Put it to work

Related terms

Educational only — not financial advice. Definitions simplified for clarity; markets are messier than definitions.