The "Fed balance sheet" measures the total assets held by the U.S. Federal Reserve, mainly government bonds and mortgage-backed securities. When the balance sheet grows (the Fed buys assets), it adds money to the financial system, which often boosts crypto and Bitcoin prices; when it shrinks (the Fed sells assets), it pulls money out, usually putting downward pressure on crypto prices.
Calendar Fed balance sheet
Fed balance sheet
History, bitcoin reaction and upcoming dates
How bitcoin, the S&P 500 and Nasdaq reacted
Percentage change from the start of the selected period.

