3 ms·

This is why: the market can stay irrational longer than you can stay solvent. https://duckduckgo.com/?q=The+market+can+stay+irrational+longer+than+you+can+stay

• mathattack 13y ago
  It can be very hard to time, and you have to pay dividends/interest while shorting. Lots of pain for people who shorted tech in 1998. Or financials in 2005. No limit to your downside.