Recognizing a Bubble Does Not Mean You Can Time Its Collapse
Historical and quantitative evidence can help identify speculative conditions, but it cannot reliably determine a bubble's final height or duration. This makes bubble analysis useful for avoiding overvalued markets but dangerous as the sole basis for short selling.
- Bubbles have indeterminate duration.
- There is no dependable ceiling on speculative prices.
- Long-only investors can respond by avoiding the market.
- Short sellers face severe timing risk.
“you might be able to identify a bubble. And I don't think that's frankly that hard”
“But the timing on the downside is really difficult.”