A trader works on the floor at the New York Stock Exchange (NYSE) in New York City, New York, U.S., March 3, 2020.Andrew Kelly/ReutersBullish stock market investors hoping for a dovish Fed pivot shouldn't hold their breath.DataTrek Research highlighted that even if the Fed turns dovish, that's no guarantee the stock market will rally."Let's be careful with the idea that a change in Fed monetary policy alone can mark a turning point for the direction of stocks," DataTrek said.Investors hoping for a reversal in the stock market shouldn't expect a dovish pivot by the Federal Reserve to be the catalyst for a move higher, according to DataTrek Research.The firm told clients in a Wednesday note that while many investors would like to see the Fed pause its aggressive interest rate hikes, which included the first 75-basis-point increase since 1994, prior dovish pivots by the Fed didn't always translate into higher stock prices."Let's be careful with the idea that a change in Fed monetary policy alone can mark a turning point for the direction of stocks," DataTrek co-founder Nicholas Colas said.