On July 3, Z went up with very low volume but then on next trading day, it went down $7 with heavy volume. Yesterday, Z went up slightly with VERY LOW volume - if history repeats itself, we should see a $7 decline today with heavy volume. Analysts are beginning to focus on stock price disparity by a factor of 3 between Z and other real estate websites that are growing revenues at the same rate (or higher) than Z. Given Z spent $35 mi on advertising to build up brand, the earning report in early August will show a loss, again, and CEO will justify losses by using the argument that they spent on advertising to have higher growth in the future. Z is a ponzie scheme and will have to face reality sooner or later, and that's why CEO and other insiders sold most of their shares at inflated prices. The government is also going after bubbles in the market - SEC halted trading in CYNK (it wouldn't be a surprise if SEC is looking into Z trading manipulation and also XEO's frequent TV appearances/company press releases to create momentum related to "pump-and-dump" by insiders). Yellen talked about bubble forming among small-cap Internet stocks.