Here's the predominant algo at work the past few days. Newswires have to be kept open now these days more then ever.
The markets been doing knee jerk reactions down 20 points quickly when news comes out, then those initial sellers start covering when news stops lingering.
The covering continues till another spate of news comes out, then bam another 20 points.
So basically, if the news is over for the time being the predominant risk is up. Means more people are short then long, since nonreactionary movement gives clues to the underlying global position bias risks.
If you get multiple salvos of news througout the session, the sentiment becomes locked. And the next session starts new again with covering taking place.
Taking all this together, it means capitalization is being recycled. If your a 10 billion dollar hedge fund, and you are short maximum amount for that derivatives that your models will allow, your forced to cover to raise capitalization, to short at the next cyclical high.
Edit: ECB just added liquidity, geeze, atleast the ECB is proactive instead of our stoic FED.
Take a day without news, and see what the market does, if the market moves up, shows you the underlying trend risks.