Strategy type

• Single instrument — one instrument. Only Asset selection and Summary are required, because a single holding has nothing to weigh against.
• Multiple instruments — a basket you choose. Allocation (how capital is split) and Rebalance (how often) become required beside Asset selection and Summary.
• Screener — a screener chooses the holdings each period. Its required chapters match Multiple instruments, but Asset selection holds one screener instead of a basket; a second qualifying screener or a rejecting pool needs Full setup, and a strategy that does carry them is never trimmed — it reads back as Full setup.
• Full setup — every setting from scratch. Every chapter is required, Risk and exits included, and its Asset selection offers all three views. If you want every control at once, work in All at once, where every card sits on one page.

The full table of required chapters: Build a strategy step by step.

The strategy type pins the Asset selection view — the one place where it limits what a strategy can do. There are three: a Basket you pick by hand, a Screen built from rules, and Compose, which holds a basket and the Qualify and Reject screener pools.

Max positions is not a control wherever you pick instruments by hand — on Single instrument, Multiple instruments and Full setup's Basket the number of positions is the number you picked. It is a control only where a screener chooses: on Screen and in Compose. See asset-selection modes.

Single instrument, Multiple instruments and Full setup. Screener starts from Starter, because a Screener strategy cannot exist without a screener and the Free plan includes no screeners inside strategies. Its tile stays in the picker, marked with its plan in the top-right corner, and choosing it opens a short plan dialog instead of starting the build — "Strategies with screeners are available from Starter" — "A screener picks the strategy's instruments at each rebalance. On Free you can still use it on its own, on the Screener page." The Type menu of an existing strategy works the same way.

A Full setup strategy on Free starts on Basket; its Screen and Compose open as a switched-off preview — see screener attach. A strategy that already holds a screener on Free is not changed, but its backtest does not start until you remove the screener, change its type, or move to Starter — see plan compliance.

You have five stocks and want to see how holding all five would have done. That is Multiple instruments: it wants 2 or more instruments, so five qualifies, and it gives you the Allocation chapter to decide how capital is split. Single instrument would stop you with "Pick exactly 1 instrument."

If you later want a screener to choose the holdings each period instead, switch the type to Screener. The confirmation warns that your five instruments will be removed, because a Screener strategy has no basket to keep them in — and they stay until you save, so you can back out.