FHAT Technical Note 066: Impulse Duration and Post-Peak Drawdowns After Weekly Moving-Average Breakouts in 3X ETFs

How long does momentum last after a weekly moving-average breakout—and how quickly does it fade? This bilingual technical note examines six 3X leveraged ETFs using 2010–2026 daily data, with detailed duration and drawdown comparisons for SOXL, SOXS, TQQQ, and SQQQ. Median impulse durations range from 3–4 trading days, while inverse ETFs reach a 20% post-peak drawdown sooner among completed events that reach the threshold. Methods, sample counts, limitations, and a SOXS case study are included. KeywordsFHAT; leveraged ETFs; inverse ETFs; weekly moving averages; breakout; impulse duration; post-peak drawdown; event study; risk management; SOXL; SOXS; TQQQ; SQQQ; UPRO; SPXU