All three major market indices ended Monday's trading session with a decline over -7% as investors fear the future economic impact of the growing COVID-19 epidemic. At market open, the S&P 500 dropped more than -7% in a few minutes, triggering the market to halt for 15 minutes to help prevent a panic filled sell-off. Monday marked the largest one-ay point loss for the Dow Jones in history, and the largest single-session percentage hit since the 2008 financial crisis.

Here's how the stock market closed to start another turbulent week:

S&P 500 Index (SPY  ): -7.59% or -225.67 points to 2,746.70

Dow Jones Industrial Average (DIA  ): -7.79% or -2,013.76 points to 23,851.02

Nasdaq Composite Index (QQQ  ): -7.29% or -624.94 points to 7,950.68

In Major Stock News, oil company stocks took a harsh dive during Monday's sell off, with Diamondback Energy (FANG  ) leading the decline. Other decliners include Apache Corporation (APA  ), Marathon Oil (MRO  ), Exxon (XOM  ) and Chevron (CVX  ). Big bank stocks--JPMorgan (JPM  ), Goldman Sachs (GS  ), Citigroup (C  ) and Bank of America (BAC  )--also took a hit amid the bond yields ongoing descent. The coronavirus's usual targets--American Airlines (AAL  ), Carnival (CCL  ), Delta (DAL  ), JetBlue (JBLU  ), Norwegian Cruise Line (NCLH  ), Royal Caribbean (RCL  ) and Southwest (LUV  )--all took another large hit from Monday's sell-off. Major cruise line stocks are now down by more than 50% in 2020 so far. Twitter (TWTR  ) shares rose on Monday after the social media platform made a deal with investment firms Silver Lake and Elliott Management that does not mention changes in Jack Dorsey's role as CEO.

In Stock Sector News, sector performance ended Monday's trading session with plunging new lows. The declines were as follows: Energy -20.08%, Financials -10.91%, Materials -9.26%, Industrials -9.20%, Information Technology -7.56%, Real Estate -7.15%, Communication Services -6.21%, Consumer Discretionary -6.18%, Utilities -5.64%, Health Care -5.19% and Consumer Staples -4.41%.

Lastly, in Commodity and Currency News, crude oil barrel prices have tanked below 20% as tensions between Russia and Saudi Arabia escalated further on Monday. This recent sell-off of crude oil began last week when OPEC failed to reach a decision on oil production cuts, causing what appears to be the beginning of a price war between Russia and Saudi Arabia. West Texas Intermediate (USO  ) and Brent Crude (BNO  ) both dropped around -25%, bringing barrel prices between $30-$35, or their worst day since 1991. Gold (GLD  ) prices also took a hit, with the metal's ounce price declining over -1% to cost around $1,670. Finally, the U.S. Dollar (UUP  ) also lowered on Monday, with the DXY Index slumping almost -0.50%.