BTC Price Today: Bitcoin broke above $85,000 on September 21. The surge came after the coin logged its first weekly close above its 50-week moving average in 45 weeks. That single technical move changed the market mood instantly.
On September 20, Bitcoin closed the week at $81,159. Traders treat the 50-week average as a clear boundary line between bull and bear markets. Crossing above it gave algorithms and trend followers a direct signal to buy.