You decide. 

The ratio of total US stock market valuation to GDP has been named “The Buffett Indicator” because Warren Buffett – the legendary CEO of Berkshire Hathaway (BRK.A)(BRK.B) – once called it “the best single measure of where valuations stand at any given moment.”

Essentially what it represents is the value of expected future economic activity discounted back to the present compared to the total value of current economic activity. In this sense, it is strikingly similar to the price to earnings ratio that is commonly used to value individual stocks. – Seeking Alpha