Threshold RSI and stochastic setups with next-bar stops

What the two oscillators measure

Relative strength index is a 0-to-100 oscillator of recent upward versus downward price change in the same series. The reading is 50 when those moves are equal, above 50 when upward change dominates, and below 50 when downward change dominates. A common lookback is 14, with 3, 9, and 25 also cited as alternatives.

The stochastic oscillator is a 0-to-100 two-line comparison of the latest close with a prior price range. The primary line, percent-k, sits at 50 at the range midpoint and is usually plotted with a smoothed companion, percent-d. The stochastic lookback is commonly taken from the 5-to-21 range.

Conventional RSI oversold and overbought bands used in the procedure are 30 and 70. Conventional stochastic bands are 20 and 80. Each band is a threshold that marks an extreme on the bounded oscillator.

A threshold is a presignal area

Crossing into a threshold zone is treated as a presignal, not an order. The zone beyond the threshold is a presignal area: a later band-cross may be near, but a trade is not yet authorized.

The oscillator can remain beyond the band for a long stretch. Buying or selling on occupancy alone is a distinct error from waiting for a later confirmed exit from that zone.

A rule-based entry has two parts

A complete rule-based entry is written as two parts. The setup is the oscillator condition that must be true before an entry order is even eligible. It only arms the trade.

The next-bar stop is a buy or sell stop placed one increment beyond the current high or low and active on the following bar, so price must already be moving in the intended direction. That stop must be hit before a fill.

RSI setup and next-bar stops

One RSI long rule uses a cross above 30 as setup and a buy-stop one increment above the current high on the next bar. The matching short rule uses a cross below 70 and a sell-stop one increment below the current low.

An RSI long exit that waits for a later cross below 70 can fail to fire if the oscillator never reaches the upper band after entry. A protective stop is treated as a required companion to the oscillator rule.

Stochastic setups that use the same stop

A stochastic long setup can require percent-d below 20 with percent-k crossing above it. A short setup can require percent-d above 80 with percent-k crossing below it. Each still uses the same next-bar stop entry.

Other stochastic rules include a percent-k cross of 20 or 80, or percent-k versus percent-d crosses that need not occur inside the bands. The threshold-plus-cross version was then evaluated on a multi-year daily sample, and the write-up invites retesting with other bands and lookbacks.

If the opposite band never prints

Editorial: the object of evaluation is the two-gate pair, not the oscillator print alone. If the opposite band never prints, an exit that waits for that later cross never fires. That is why the protective stop is written as a companion, and why the procedure is incomplete without it.