Memory stocks SanDisk (SNDK) and Western Digital (WDC) topped current quarter estimates but both stocks dipped sharply on their earnings reports. Alex Coffey joins the Market on Close earnings coverage to examine these moves, saying it is could be a "buy the rumor, sell the news" type of event. He says Western Digital is "saying all the right things" in its earnings press release, but notes the conference call could reveal more insights. Meanwhile, Reddit (RDDT) topped its numbers and Alex points to the revenue per user as an example of good growth.