Business Insider reports that US stocks are on course to close lower for a third consecutive week.<br />The S&P 500 has lost nearly 9% since early September's record high.<br />That decline was mainly driven by losses in the technology sector.<br />But Goldman Sachs, Wells Fargo and Deutsche Bank are upbeat the US stock market sell-off is mostly over.<br />Goldman Sachs kept its end-of year S&P 500 target to 3,600 by year end.
