That's profits and lock-up sellers. Any pullback represents a buying opportunity for investors (not a trader).
can't break 20, short it now
Home Quotes SSNI After Hours Trading
Silver Spring Networks, Inc. After Hours Trading
*Delayed - data as of 11/01/2013 16:14
Read more: http://www.nasdaq.com/symbol/ssni/after-hours#ixzz2jULuizZl