Stocks are closing sharply lower in another dizzying day on Wall Street, putting the market on track for its worst month since early 2009, the AP reports. Indexes swung in a huge range Monday. The Dow Jones Industrial Average rose as much as 352 points and sank as much as 566. After weeks of rocky trading, the S&P 500 is nearly 10% below the peak it reached in late September. Most of the losses came after Bloomberg reported that the US could announce tariffs on all remaining Chinese imports by December. Boeing sank 6.6% after one of its airplanes was involved in a devastating crash. The S&P 500 fell 17 points, or 0.7%, to 2,641. The Dow gave up 245 points, or 1%, to 24,442. The Nasdaq fell 116 points, or 1.6%, to 7,050. (More stock market stories.)