Because markets are up 70-75% of the time. The psychology of buying is different the psychology of selling. Even Chanos threw in the towel on his short selling fund. He knows its a waste of time shorting against a wall of money pouring in.
The only guy left who seems to still be good at short selling is Carson Black from Muddy Waters especially his "gangsters using Square to send money" shade on SQ stock. I think right after it came I bought puts on it and the stock went down like another 30%. His call on the scammer from India Adnani was a great call too. I think the Adnani group of stocks crashed hard after his call. He reminds me of Chanos during the Enron/Worldcom/Tyco days.
I have been short TGT since its last report and it finally went back down but it was only because of the bad economic data in the last few days. Its tough out there for shorts.
I would not bother shorting when the major indexes are all trending up. You are bucking the trend here and it is like running towards the tsunami instead, of away from it. If the big institutions including, hedge funds are buying---you want to be buying too with them. Even weak stocks will be able to withstand selling pressure for a while, atleast in a bullish environment.
