If you've ever looked at a stock price chart and felt a bit overwhelmed by all the lines, bars, and colors, you're definitely ...

To many chart readers ... upswing in the stock market — but not so fast. The S&P 500 is approaching key resistance levels that could unleash a wave of selling and increase volatility in the near term.

There's a lot of noise in the stock market ... from the S&P 500 chart is that even after the S&P 500's 16% decline, the long-term uptrend "remains intact," evidenced by the index bouncing off ...