Stocks Have Worst Day Since br 1987 'Black Monday' Crash The S&P 500 ended down br nine and a half percent on Thursday. The drop is the most substantial br daily loss since the stock market crash in 1987. A brief rally from opening losses br followed the Fed announcement of a br $1.5 trillion loan injection for banks. But stocks continued their sell-offbr shortly after the announcement. The massive loss means that br the S&P 500 joins the Dowbr well into bear market territory. A bear market refers to a br 20 percent loss or more from a recent peak. Economists point to br President Donald Trump's hazy plans br to alleviate financial turmoil due to the coronavirus br pandemic as fuel for the sell-off. Carl Tannenbaum, via 'The New York Times' According to analysts, br a bear market indicates a more than br 80 percent chance of an economic recession.