US stocks lost $1.2 trillion in value for the week.
U.S. stocks are now worth about $800 billion less than in August.
For example, consider a mutual fund that holds ten 'large value' US stocks.
US stocks gave up gains yesterday after the Fed made clear it was not offering any new steps to help the economy.
U.S. stocks rose for the third session in a row on moderately higher volume.
US stocks reversed early losses after mortgage applications increased as a result of government cash injections.
With other places in the world to invest, investors may pull money from U.S. stocks.
US stocks endured their biggest loss since November 2008, the heart of the "sub-prime" storm.
Paper losses now on US stocks now total $8.4 trillion from the market highs of the previous year.
Markets U.S. stocks defied war fears and actually rose a little, just hours before shooting started.