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Step Index, explained

Step Index behaves like nothing else covered in these guides. No volatility percentage, no drift, no spike — every tick moves by a fixed amount in one direction or the other, which makes it a genuinely different kind of market to build a bot for.

What it actually is

Each tick, the price moves by a fixed increment of 0.1, up or down. There's no percentage volatility setting the way there is on Volatility indices, and no engineered drift or spike the way there is on Boom & Crash. The step size is the only thing that varies from tick to tick, and it doesn't vary at all.

Why grid-style traders like it

A fixed increment makes outcomes measurable in exact units instead of percentages. "The price moved 10 steps" means the same thing regardless of the current price level, which is precisely what a percentage-based market can't offer — a 1% move is a different amount of price depending on where you start. That's why Step Index shows up so often in grid and range-based systems: the unit of movement never changes shape.

Trading it with a bot

Rise/Fall over a fixed number of ticks is the direct way to trade the mechanic — a duration of N ticks bounds the maximum possible movement to N steps, which is a more calculable range than you get on a percentage-based market. Digit contracts are technically available here too, but see the note below before assuming anything about their odds.

Digit contracts here — verify before you assume. The uniform, independent last-digit behaviour this site has actually checked with a chi-square test is verified specifically on the standard volatility indices (R_10 through R_100). Step Index is built on a different mechanic — a fixed increment rather than a continuous random walk — so we haven't made the same claim here. Run the digit analysis tool on Step Index yourself before trading digit contracts on it.

Run it in Binary Pro

  1. Open the Bot Builder and select Step Index from the symbol list.
  2. Choose Rise/Fall as the trade type, set your duration in ticks, stake, and thresholds.
  3. Test on a demo account first — run the digit analysis tool alongside it if you're trading digits rather than direction.

Related: synthetic indices explained · Jump Index explained · test a strategy before running it live

Illustrative figures are rounded. Risk disclosure.

Build and run it yourself

Binary Pro is free to use, runs in the browser, and works on a Deriv demo account.

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