Because UBSS, NITE and then SALI all started bringing it down, right at lunchtime, as usual. Also you have some profit takers as we ran up so fast, but this latest dip...you could see what they wanted to do right around .161.
Its called intraday consolidation...it is unhealthy for a stock to so str8 up without consolidation. Dont buy a stock based on hype...buy it on fundamentals and what you are willing to lose. With spng...hard to lose....easy to grasp the fundamentals.