First-hour opening-range construction as a refusal problem

Construction means writing the full script

The construction task is to convert a day-trading method into a fully specified mechanical procedure for S&P 500 futures. A mechanical-trading-system is a complete script for entries, reverses, stops, and no-trade days that can be followed or backtested without new discretion.

The system is framed as trend-following while adding rules meant to drop many trades during nontrending sessions. Those refusal rules are not a later overlay. They are part of the same procedure as the first-hour map.

Stamp the first-hour-extremes

The directional premise is that the session high or low is estimated to form in the first hour about 60 percent of the time, so a later breach of that extreme is treated as the day’s direction. A breakout-system is the directional procedure that treats a cleared extreme as the session bias and states the matching reverse and exit.

First-hour-extremes are the session high and low stamped at 9:30 a.m. Eastern Time. They exclude any gap from the prior close and serve as that day’s opening range.

Offset breakouts reverse instead of flattening

An opening-range-breakout is a signal that fires only after price clears a stated offset beyond the first-hour high or low. Buy and sell orders sit 20 points beyond those extremes. Positions may be held overnight.

A hit on the opposite side is a sell-and-reverse. The current side closes and the opposite side opens at the same trigger, rather than going flat.

Anticipated-range levels carry timed-reversal

An anticipated-range is a projected session extreme formed by adding or subtracting a recent average daily range from the opposite first-hour extreme. Those levels equal the opposite first-hour extreme plus or minus the 10-day average daily range.

A 20-point approach plus a 15-minute hold governs whether to reverse. That hold is the timed-reversal: a reverse allowed only after price has held a stated interval at or through an anticipated-range level.

After that reverse, a further 140-point adverse move allows one more reverse, after which a protective stop ends new activity for the rest of the session. Both anticipated-range ends may trigger on the same day, except that a reverse appearing with less than 45 minutes left in the session is treated as a special case.

Width filters and stand-aside days refuse new entries

If the first-hour range is within 50 points of the 10-day average range, first-hour breakout entries are disabled and only anticipated-range rules apply. That is the range-width-filter: it cancels first-hour breakout entries when the opening range is already nearly as wide as the recent average daily range.

If the first-hour range exceeds that average, new entries are skipped while open risk is left to stops. That session is a stand-aside-day: it forbids new entries while an existing position remains subject only to stops.

Protective stops close the procedure

Protective layers include a 300-point money-management stop, a trailing stop that arms after 220 points of open profit and is placed 49 percent from the position extreme, and a $1,500 stop when both the first-hour and 10-day ranges are large. Those stops belong in the same mechanical-trading-system as the entries, reverses, and no-trade days.