Recently there has been news everywhere about the investigation of high-speed insider trading. People with a lot of money have been using high tech computers to buy stocks faster. (This is considered manipulating the stock market and cheating people out of their money by having them pay a higher price.)
best way i would explain it is: Its when you make a fake price/value for a stock. It can be inflated to look like its worth a lot more than it is and its super illegal - most people refer to this as market manipulation (same thing).
Market manipulation is a deliberate attempt to interfere with the free and fair operation of the market and create artificial, false or misleading appearances with respect to the price of, or market for, a security, commodity or currency. Market manipulation is prohibited in most countries, in particular, it is prohibited in the United States under Section 9(a)(2)[1] of the Securities Exchange Act of 1934, in Australia under Section 1041A of the Corporations Act 2001, and in Israel under Section 54(a) of the securities act of 1968. The Act defines market manipulation as transactions which create an artificial price or maintain an artificial price for a tradeable security. Market manipulation is also prohibited for wholesale electricity markets under Section 222 of the Federal Power Act[2] and wholesale natural gas markets under Section 4A of the Natural Gas Act.[3]
Putting out false information which would effect the price of a stock in the opposite way that true information would effect the price.
It could be info to make it go up falsely or down falsely.
