Snap Inc shares rose 4.5 percent on Monday after a flood of Wall Street analyst published bullish research notes on the company.While Snap investors are enjoying fresh bullish commentary from firms such as Citigroup, Deutsche Bank, Credit Suisse, Goldman Sachs, Jefferies, Morgan Stanley, Cowen and RBC Capital Markets, other traders are skeptical of the firms’ motivation.Each of the eight banks who came out bullish on Snap on Monday were also underwriters for the company’s massive IPO. IPO underwriters are restricted from commenting on a stock until 25 days since its IPO date, which is why the huge wave of commentary all came out on Monday.Read more