"You’ll notice striking similarities between the peaks and troughs in the graph below." Correlation does not imply causation. On the micro level most stocks go

"You’ll notice striking similarities between the peaks and troughs in the graph below." Correlation does not imply causation. On the micro level most stocks go up and down together simply because overall market sentiment is a factor on all stock prices. It would have helped if the chart had included the S&P 500 Index.