Look at a chart of the S&P 500 from 1920 to 2008 and you'll notice something rather curious: the stock market has gone parabolic ever since the financial crisis. What made this period so unique? Tremendously low interest rates coupled with quantitative easing dissuaded capital from financing the real economy and instead encouraged herding and levering up in the financial economy for returns. At ever dip, it was an op…
That's because you are using a linear graph instead of a logarithmic graph.
If you have $100 and it double you have $200, if you have $10,000 and it doubles you have $20,000. Both of those are the same chance, but if you use a linear graph it looks parabolic.
Do yourself a favor and NEVER use a linear graph of the stockmarket.