What is scalping?
Scalping means taking many very short positions to capture small price differences. Allowed by most prop firms, in practice it runs into minimum holding times and execution conditions.
The permission appears in almost every set of terms. It is the peripheral rules that decide whether the approach stays workable.
The constraints that block it
Four mechanisms limit scalping without ever prohibiting it outright.
The minimum holding time is the most direct: some firms require a position to stay open for at least thirty seconds, sometimes a minute. A scalper working on moves lasting a few seconds is mechanically excluded.
The volume cap limits cumulative lots per day or per instrument, which constrains a high-frequency approach.
Execution conditions matter just as much: on a simulated account, the spread applied and the latency are matters of the firm’s configuration. A strategy profitable by two points at a broker may no longer be at a prop firm whose spread is wider.
The consistency rule, finally, rarely works against scalpers — their gains are by nature spread across many trades.
What remains prohibited
The line falls at tick scalping and latency arbitrage: capturing a one or two tick difference across a very large number of orders exploits the infrastructure rather than the market. Those approaches are universally prohibited and detected.
The questions to ask before buying
Is there a minimum holding time, and exactly what is it? What average spread applies on the instruments you trade? Is there a cap on lots per day or per order?
Those three answers determine whether scalping is genuinely workable at this firm — far more than the “scalping allowed” line on the sales page.
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Related terms
- Challenge A challenge is the paid evaluation a prop firm sells. The trader must reach a profit target without crossing the imposed loss limits, on a simulated account. Passing it gives access to a funded account.
- Expert Advisor An Expert Advisor is a program that places orders automatically according to predefined rules. Prop firms generally allow them, except for strategies exploiting a technical flaw such as latency arbitrage.
- Slippage Slippage is the gap between the price requested and the price actually obtained on execution. On a prop firm account it depends on the company's infrastructure, and can trigger a drawdown breach.
- Spread The spread is the gap between an instrument's buy and sell price. On a prop firm account it comes from the firm's own configuration, and it is a recurring cost traders routinely underestimate.