The stock market isn't magic, its traders will arrive at some sort of consensus position reflected in prices, through reading the global media like the rest of

The stock market isn't magic, its traders will arrive at some sort of consensus position reflected in prices, through reading the global media like the rest of us, about how serious the intentions are around the deal, but that doesn't mean they know how the governments of, say, Brazil, the UK, Saudi Arabia, Poland, Indonesia, Spain, Ireland, or India are going to react to it over the next few years. A reality of concerted action could just as well emerge over five years as policies come into place. Following the money, i.e. stock prices of oil companies, will be an accurate way of judging how successful an agreement like this is in altering the global investment markets, but only after time. On Monday, you're not going to get much more than the immediate impression.