Here's my response from the HN discussion a year ago [0]:<p>-----<p>If Mark Cuban thinks the market is now all about exotic derivatives rather than buying stock in companies you believe in, he's listening to the wrong people. Commission-based brokers talk about exotic derivatives; Warren Buffet still talks about buy-and-hold.<p>The biggest wins and losses in day trading will come from exotic derivatives simply by their nature: they're highly leveraged bets. Those firms that create the vehicles to make those bets aren't "hackers", they're "Vegas". You ask for a bet against the housing market or for cattle, they set up a structure to let you make that bet, and you play the odds -- and you might beat the other betters in the market over the short term, but it's the house (taking its percentage off the top) that always wins long term. Mark Cuban is right to be uncomfortable playing that game.<p>Meanwhile, people like Warren Buffet continue to look for healthy companies that are underpriced and buy into them for the long term. Day-to-day the market might be driven by short-term bets, but over the course of 3 decades it's still driven by the fundamental health of companies. If anything, those who care about <i>"the performance of specific companies and their returns"</i> benefit from the fact that occasionally, as a result of day traders' bets, healthy companies' stocks get sold at bargain prices.<p>If you try to play Vegas' game, you'll probably get burned. But if you stand back, watch the game, and buy when their game creates a bargain price on good long-term stocks, you stand to get very solid returns.
-----<p>[0] <a href="http://news.ycombinator.com/item?id=1332422" rel="nofollow">http://news.ycombinator.com/item?id=1332422</a>