Johan
Ex got M3 in the divorce, waiting for EU Model Y!
Pretty much 150 was a level of technical resistance. Those that believe in the charts (i.e. 99.9% of institutions) were waiting to see if it would break 150 before making a decision. The next level of resistance is more like $160, so expect that if we break through that, a whole new round of buyers will get interested.
I know, it is weird. You'd think that if you like a company at $160 then you should like it at $140 even more. But, these guys don't care about the company, they care about the stock. That's very different. When dealing with technical analysis, you'll often see the chart tells you to wait to buy something until you see how things play out.
I've found the best way to make money in the stock market is to believe in the fundamentals, but respect the technicals. That way you buy at $140 because you believe in the company, but you know to hedge as you approach that 160 level.
As has been pointed out many times before on this thread, it doesn't really matter if you truly believe in technical analyzis as a science (that the chart can tell you where the stock is headed, basically) or if you dismiss it as snake-oil pseudo-science. As long as enough traders use technical analyzis as a way to make buy or sell decisions, we have self fullfilling prophecies: TA says buy, so people buy, and voila, the price goes up just as predicted. It's a positive feed-back loop. As you can see I don't particularily believe in TA per se, but just like Citizen-T says you must respect the technicals, since others may act upon these indicators to a great degree.