The bulls are in control, according to our survey of ETF proxies for the major asset classes. As detailed below, sellers appear to be in the minority these days. The leading exception is found in U.S. bonds broadly defined, where a standoff between the bulls and bears drags on. Otherwise, optimism has broken out across the major asset classes. We’re not complaining, but a party that reaches into virtually every corner of the capital and commodity markets raises questions about what comes next. Let’s just say that this is a good time for rebalancing your portfolio. Whenever you can adjust the asset mix on your terms, it’s a good day. But gift horses don’t last forever, at least not in ample quantities. On the other hand, momentum is strong and it’s usually a force to be reckoned with. In any case, let’s take a closer look at the party already in progress…