Here's what needs to happen for one of Wall Street's biggest bears to flip bullish and be won over by the stock market

• Bank of America's Michael Hartnett has been one of Wall Street's biggest bears over the past year.
• But in a Friday note, Hartnett outlined potential factors that could flip him from bearish to bullish.
• While Hartnett's not holding his breath, here's what he needs to see to turn bullish on stocks.

High inflation, a weakening consumer, and the threat of an economic recession are all factors that have shaped the bearish view of Bank of America's chief investment strategist, Michael Hartnett.

But in a Friday note, Hartnett highlighted what he needs to see to change his view and turn more bullish towards the stock market.