A volume-gated moving-average trend combination

A state engine and a permission gate

The procedure is specified as a combination: a price moving average supplies the trend-state switch, and a volume condition is added so signals are not taken from price averages alone.

A moving-average-crossover is a close through a moving average of price used as the switch that declares or reverses trend state. Volume-confirmation is an entry filter that permits a new position only when session volume exceeds a recent average, treating elevated activity as participation rather than as a price target.

The trend-following premise

Trend-following is a directional procedure that assumes an established price trend is likely to persist and that stays aligned with that state until a later rule says the state has ended.

The premise treats a close above a moving average as a long state and a close below it as a short state, on the assumption that the force behind an established move tends to persist. Two assumptions are made explicit: underlying market forces tend to trend, and a moving average both marks when a trend is established and recognizes when that trend has ended.

The always-in-market baseline

Always-in-market is a ruleset in which a close through the average both exits the current side and immediately opens the opposite side, so the system never stands aside.

The baseline implementation entered long after a cross and close above a 20-session average, reversed short after a close below that average, and therefore remained continuously long or short.

Why a volume gate was added

Used in isolation, the 20-session close-through-average rule was judged unable to separate a minor fluctuation from the start of a new trend.

Volume above its recent average was treated as evidence that new information had reached participants and that the associated price move was more likely the beginning of a trend.

The abstention version

The combined entry required a close through the 20-session price average and that session’s volume above the average volume of the prior 10 sessions. Exits remained a close back through the price average alone.

After the volume filter was added, the system was no longer always in the market: a new position opened only when the crossover and the volume threshold occurred together. Abstention is the idle state created when the price average is crossed without volume confirmation, so no new position is opened.

Two design lessons

The write-up framed two design lessons: a trend-following engine can be paired with a volume, momentum, or open-interest filter, and simple older tools can still be written as one complete procedure.