Gap Up + Lack Of Volume = Sell-Off

A nice gap up was followed by a base around 138.50-138.55 (SPY). An hour later, price moved higher, but on low volume. After a small pullback, the highs were attacked once more, but without success (no volume). After that, the trend reversed and in the afternoon we headed down to the morning lows and beyond. Price bounced right underneath them. but after 20 minutes we went towards new intraday lows. Very choppy close near the lows, but still above yesterday's close for most indices (except for Nasdaq).

Tech was far weaker than anything else today. Nasdaq was the only index turning red while others (and mainly small caps) were comfortably green.
Today was an 'inside day', not moving outside yesterday's range. We'll have to wait for next week, maybe we'll get a decisive move up or down.

5m-chart SPY:

Daily charts DIA, SPY, QQQ and IWM:

Euro, oil, metals
While oil and copper moved up pretty good, gold and silver traded sideways.
The euro is back at the 1.32-level. 1.30 is becoming a decent support-level since February of this year.