I get the impression so far that spikes in the S&P are inversely correlated to spikes in the EUR/USD like the one at 12:45 Is this the general rule of thumb for spike moves ?
Research it, you would be pleasantly surprised how much correlation the markets carry within themselves. Because, hey, they all operate in the same universe, right? You'll notice the "Market" is one breathing beast, you just have to find his lungs, so to speak