Survivorship of a rebound
When should a strong up day be treated as the start of a reversal, and when is it just a bounce inside a falling trend?
In plain words
A rebound is a temporary bounce inside a broader downtrend that does not break the prior structure. Survivorship asks whether the up move survives the week — if the market still closes lower than it started despite strong single-day rallies, the rebound failed to reverse the larger decline.
Why it matters
Large up days can trigger short-covering or signal fresh buying, but they often occur within established downtrends without breaking key levels. Traders who interpret any strong rally as the start of a reversal may enter long positions at unfavourable points during continuing declines. Confirming a true reversal requires the rebound to hold gains over multiple days and eventually close above recent highs, not just produce a strong single-session rally.
In a real week: ETH, week of 30 May 2022
ETH opened the week of 30 May 2022 at 1813.64 and closed at 1806.23, a decline of 0.41%. On 30 May 2022, ETH recorded its best daily gain at +10.21%, reaching 2016.45 by 31 May 2022. Despite that strong single-day rally, the rebound failed to hold: ETH fell 6.38% on 01 June 2022, dropped to a weekly low of 1737.00 on 03 June 2022, and closed below its opening price. The strong up day did not lift the week's close above its opening price of 1813.64.
A common mistake
Interpreting any large daily gain as the beginning of a reversal. A single strong session, however impressive, provides no signal by itself if the broader price structure continues making lower highs and lower lows.