Momentum Strategy: Buy Strength, Sell Weakness

Overview

Momentum trading rests on the assumption that assets moving strongly in one direction keep doing so longer than a rational reaction would predict. The strategy ranks instruments by relative strength, buys the leaders, and exits when momentum fades — not when a reversal is confirmed. Winners run; losers are cut fast.

Setup

Instruments: stocks within a sector, currency crosses, crypto majors
Timeframe: daily for ranking, 1H for entries
Indicators: Rate of Change (ROC, 12), 20 EMA, ADX(14) for trend strength
Market regime: trending with ADX > 25

Rank candidates by 12-period ROC each session; only trade the top three (long) or bottom three (short).

Entry rules

Confirm ADX > 25 — momentum worth trading
Price must be above the 20 EMA for longs (below for shorts)
Enter on a pullback that holds above the prior swing low; never chase the extended high
ROC should still be positive and rising when you enter long

Stop loss

Stop below the most recent swing low (long) or above the swing high (short)
If the swing is too far away, fall back to 1.5 × ATR(14)
Exit immediately if ADX falls below 20 — momentum has died

Use the stop loss calculator to validate the distance.

Take profit

Trail the stop beneath the 20 EMA as momentum extends
Book partial profits at 2R, then run the remainder until price closes below the 20 EMA
Aim for ≥ 3R on the runners — momentum trades must pay for the inevitable losers

Check the risk-reward calculator before entry.

Risk management

Risk 1% of equity per trade
Position size = risk amount ÷ (entry − stop). Verify with the position size calculator
Cap total sector exposure at 3% — momentum clusters inside hot sectors
Cut position size by half when VIX spikes above 30, since momentum whipsaws during fear

When it fails

Momentum strategies bleed when leadership rotates sharply, such as after a sector shock. If the top-ranked names change daily, momentum is unstable — reduce risk or stand aside until a new, stable leader emerges.