If you look at the trading pattern, there is a long term upward cycle, versus intraday stop runs to flush out weak longs. The chart pattern for the last 5 days looks very bullish, and the market is being 'trained' to buy the dips and is being rewarded from whoever is following this.
The risk is that, that minor dip might turn into a inflection point in the cycle, were it turns down in the intermediate term. The world is flush with cash, and that cash is looking to get parked in politically stable securities. Bonds and US equities will enjoy inflows, its hard to fight the liquidity. These liquidity cycles can last years and pyramid onto themselves.