Time-Decay Exit

Every minute a position is open without meaningful price movement is a minute of capital tied up in an opportunity that has not materialized. Day traders have a finite session — roughly 6.5 hours — and a finite number of quality setups within it. A position held for 90 minutes on a stalled trade is capital and attention unavailable for two or three other setups that may develop during that window. Time-decay exits formalize the recognition that holding time is expensive: a flat trade with no catalyst for movement is better closed in favor of fresh opportunity. Over a full month of trading, systematic time-decay exits can increase the number of productive setups entered and reduce the drag of stagnant positions on capital efficiency.

The optimal maximum hold time depends on strategy type and the typical time-to-target for your setups. Scalping strategies targeting small, fast moves should have hold times of 10 to 20 minutes. Momentum breakout trades that need room to develop typically use 60 to 90 minutes. VWAP reclaim or mean-reversion setups may justify 90 to 120 minutes. To calibrate empirically, analyze your historical winning trades and find the median time elapsed from entry to peak MFE. The max hold time should be approximately twice this median — allowing winners enough time to develop while cutting trades that far exceed the normal development window. Any trade still open at 2x the median time-to-peak is likely a failed setup, not a delayed winner.

Intraday liquidity and volatility are not uniform throughout the session. The first 90 minutes after market open (9:30 to 11:00 AM ET) and the last 60 minutes before close (3:00 to 4:00 PM ET) contain the most institutional activity and the cleanest directional moves. The midday period — roughly 11:30 AM to 2:00 PM ET — is often characterized by low volume, choppy price action, and spread widening on smaller-cap stocks. Positions entered in the morning that have not hit targets by midday are particularly good candidates for time-decay closure before the afternoon doldrums deepen. Holding morning momentum trades into midday hoping for continuation is one of the most common ways to turn a near-breakeven trade into a loss.

A mechanical time-decay exit applied without nuance will sometimes close winning trades that are simply developing slowly. To address this, Tradewink's time-decay exit includes an MFE traction override: if the position's MFE is actively expanding — the trade is still making new highs — the time exit is deferred until MFE momentum stalls. Only trades that are flat or declining relative to entry are exited at the time limit. This prevents the rule from closing trades in the process of succeeding while still cutting positions where the original thesis has clearly failed to develop. The MFE traction threshold and extension duration are configurable per-user.