How much was spent on quantitative easing 1?

Quantitative Easing 1 (QE1), initiated by the Federal Reserve in late 2008 in response to the financial crisis, involved the purchase of approximately $1.75 trillion in mortgage-backed securities and Treasury securities. The program aimed to lower interest rates and stimulate the economy. QE1 officially ended in March 2010, having significantly expanded the Fed's balance sheet during its implementation.