Analyst upgrades typically lead to a positive short-term reaction in the stock market as they suggest a better-than-previously-expected performance and outlook for the company. The increase in price target further strengthens investor confidence, suggesting that the stock is undervalued at its current price. Given that the upgrade is from a reputable firm, B of A Securities, it is likely to be taken seriously by the market, leading to a short-term increase in the stock price of ZoomInfo Technologies.