Someone mentioned Proprietary Trading.

Look it up in Wikipedia.

The process is likewise: Bank A says Company XYZ is a good buy, gives good valuation and TP. Bank A then uses its own $$$ to buy up the shares of Company XYZ and at the same time drives up the price. Investors will then take notice and ride the boat for Company XYZ sending the shares higher. Bank A then sells the shares, pockets a large profit and those who came in late are left with losses.

So....be careful when you trade this way.