Rsi threshold buy sell

Buy marks dips where the RSI balance falls below -0.5; sell marks rallies above +0.5.

Over the last rsi_window bars this sums the price rises and falls, weights each move by log(volume + 1) when the volume input is connected, and returns (gains minus losses) over (gains plus losses), a value between -1 and +1 called the balance. Buy marks bars where the balance is below lower; sell marks bars where it is above upper. Each marker only records that a threshold was crossed, because the indicator itself checks no reversal and waits for no turn in price.

How to read it

Markers sit on the candles; this indicator has no pane of its own.
A buy marker means recent falls outweighed rises by more than three to one (balance below -0.5). A sell marker means rises outweighed falls by more than three to one (balance above +0.5).
On SPY one-minute bars in September 2026 at default settings, each side marked about 8% of bars and started about 22 separate runs a day, so these markers are common, not rare.
With confirm_days at 1, every bar of a run is marked: read a run as one stretch of sustained pressure, not as many signals. The first rsi_window bars never mark while the window fills.

What it outputs

Buy: balance below lower: Marks each bar where the balance is below lower (default -0.5): recent falls clearly outweighed rises. A dip marker, not a breakout.
Sell: balance above upper: Marks each bar where the balance is above upper (default +0.5): recent rises clearly outweighed falls. A rally marker, not a reversal call.

When it fires

Buy fires on bars where the balance is below lower: recent falls outweighed rises by over three to one at defaults. Sell fires above upper, where rises outweighed falls the same way. Each marks a stretch of extreme pressure, not a turn in price.

Settings

rsi_window: How many recent bars the balance is measured over. Shorter (around 7) reacts within minutes and marks more often; longer (60 or more) moves slowly and marks fewer, longer runs. Nothing marks until this many bars have loaded.
lower: The buy level. Lowering it (toward -1) needs a deeper sell-off, so fewer buy markers; raising it toward 0 marks more dips. The slider goes to 51, but the balance stays within -1 to +1.
upper: The sell level. Raising it (toward +1) needs a stronger rally, so fewer sell markers; lowering it toward 0 marks more rallies. The slider goes to 51, but the balance stays within -1 to +1.
confirm_days: How many consecutive bars the condition must hold before marking. At 1 every bar of a run is marked; at N only the Nth bar of each run of N or more is, giving fewer, later markers that skip one-bar flickers.

Pitfalls

Buy marks weakness, not strength: in a steady downtrend the balance can stay below lower for a long stretch, so buy markers keep coming as price falls.
Nothing enforces lower below upper. If lower ends up above upper, both sides mark most bars, and the two sliders can contradict each other.
The balance stays between -1 and +1, so a lower below -1 or an upper above +1 never marks. The sliders run to 51, so those values are easy to reach by accident.