The trends are extended on quite a few charts. The action in the US markets is being artificially inflated and supported by monetization and liquidity so it *could* continue on for some time, even until the November election. It is being fueled by the expectation of a large quantitative easing by the Fed shortly thereafter. That QE, when it arrives, is likely to be sold if it is not significant enough to meet expectations.
I am more cautious on short term positions here, and have had some short hedges on in the overnight, but deftly. It is important not to exhaust yourself expecting a trend change before it is ready to happen, and one cannot anticipate exogenous events by definition. Still, the time is ripe for one to have a significant effect should it occur.
The long term trends are all intact, but we have reached a position where we might be looking for intermediate tops and consolidations. The Fed is not infallible or omnipotent, but rather determined and capable within its limits. The combination of government and the monied interests is powerful and ruthless. Manage your money tightly and wait for the market to reveal its intentions if you are trading.