Bitcoin has risen more than 5% in the previous 24 hours, breaking beyond $47,500 for first time in three months. Bitcoin, it turns out, has been following the Stock-to-Flow model created by popular crypto analyst PlanB to a tee. PlanB made his prognosis for months following August in June 2021, when BTC was under pressure and trading below $35,000. By the end of December 2021, BTC price is expected to reach $135,000.