How are you going to hoard "at no risk"? You're trying to corner the market for a given stock in an index pushing it's price way up and thus exposing yourself t

How are you going to hoard "at no risk"? You're trying to corner the market for a given stock in an index pushing it's price way up and thus exposing yourself to the price crashing down and wiping you out. Meanwhile the passives are routinely buying and selling index funds depending on their need to save or raise cash so the net inflows into that stock are positive or negative depending on that. And that stock is only a small part of the total portfolio. Depending on how their specific timing works out your scheme is a net positive or negative but it never wipes them out. Your risk is way worse, particularly if you need to leverage to buy the whole position. Even if your play was to corner the market completely and own almost the full company the end result would be it being removed from the index for there not being enough float around. Then all the index funds dump what they had of it, and you lose your shirt.