Bank of America (BofA) has issued a warning that the rally in the biggest US tech stocks is at risk of fading further if the US economy continues to cool. According to BofA strategist Michael Hartnett, the global economy is currently 'ill,' and the dominance of major tech stocks, often referred to as the 'Magnificent 7,' could be threatened by a single poor payroll report. Hartnett emphasized that we are 'one bad payroll away' from seeing a significant impact on monopolistic and oligopolistic dominance in the tech sector. This sentiment reflects growing concerns over the sustainability of the current market conditions amid economic uncertainty. Additionally, BofA described the current market as a 'buffalo' market.