HFT Rule
A firm restriction on ultra-fast, ultra-frequent trading — designed to keep evaluations reflecting real trading skill, and easy to stay clear of once you know where the line is.
An HFT rule limits high-frequency trading behavior on a firm’s accounts: trades measured in seconds, hundreds of round-trips a day, latency-driven entries, or automated strategies whose entire edge is reaction speed rather than market read.
The reason is straightforward, and it isn’t hostility to fast traders. Firms need an evaluation to measure something that transfers — a repeatable read on the market that will keep working when real money is behind it. A strategy whose profit comes from being 20 milliseconds ahead of a simulated fill doesn’t transfer, so firms fence it off. Understanding that logic tells you exactly which side of the line you’re on.
What HFT rules typically look at:
- Minimum hold time. Positions closed within a very short window may be flagged or excluded from profit calculations.
- Trade count. An unusually high number of round-turns per day or per account.
- Order-to-fill behavior. Heavy order placement and cancellation without meaningful execution.
- Latency-dependent automation. Strategies whose profitability depends on speed of reaction to a quote or a data release.
The good news: normal scalping is not HFT. A trader taking 8–15 intraday trades in MNQ, holding each for a few minutes, working a defined setup — that’s a scalper, and scalping is welcome at the great majority of futures prop firms. The rule targets a specific extreme, not speed itself.
If your strategy is fast, do two things. First, read the firm’s prohibited-strategies page and note any explicit minimum hold time or trade-count language. Second, log your own average hold time and daily trade count for a week — if you’re nowhere near the stated limits, trade with total confidence.
Knowing the boundary is the skill. Read prohibited strategies at prop firms, then compare firm policies in our directory and pick one that fits your speed.