Bitcoin Halving Comparison Across Cycles:
Halving 2016:
Before the Halving event, BTC dropped by 29.36%, and post-Halving, it dropped another 28%. (Prior to that, BTC had risen by ~335%.)
BTC continued sideways for about 100 days before breaking out and experiencing significant upward momentum thereafter.
Halving 2020:
Before the Halving event, BTC corrected by 19.5% from its recent peak.
Sideways movement for nearly 3 months following the event.
Therefore, after 2 Halving events, it's difficult to conclude how much BTC will "sell the news" by. The fluctuations during the Halving periods also have a high degree of randomness.
The most certain conclusions drawn from the two Halving events are:
1️⃣ BTC will cool down and move sideways for a period of about 2-3 months.
2️⃣ BTC will continue its strong upward trend and reach its peak within approximately 5xx days thereafter.