I posted this yesterday. It's only the University of Michigan Business School. What would they know.
Figure 1 displays the breakdown of manipulation types. 84.51% of manipulation cases involve the inflation of stock prices while less than 1% of cases involve the deflation of stock prices.
This is a good one. If you are not into the math go to page 24. I highly recommend you read this
This research employs moderated postings unique to the Australian HotCopper online message forum. Improving upon prior literature such as Das and Sisk (2005), Chemmanur and Yan (2009) and Brown and Cliff (2004), HotCopper moderated postings allow us to proxy for manipulative behaviour directly. This is a unique opportunity available to us
Stock ramping through forums occurs when a ramper recommends a stock and highlights its huge potential to rise in share price in the very near future. The ramper buys a large quantity of a stock, and posts information to influence the masses into buying the stock with the aim to drive up the share price. By implying that readers of these posts are in possession of privileged information - such as insider knowledge of an impending takeover offer - rampers seek to persuade the gullible into purchasing a particular stock. If a significant enough number of easily-led individuals invest in the touted stock, a ramper can “ramp up” the share price so that he or she could sell their shares at a quick profit.
