CNBC's Jim Cramer said the range of stocks investors should consider buying is narrowing after the Federal Reserve raised its federal funds rate by 25 basis points to 3.75% to 4%, saying buyers are now officially fighting the Fed. Breakout Capital founder and chief investment officer Ruchir Sharma separately warned that a sustained 10-year Treasury yield above 5% could weigh on stocks, particularly artificial intelligence companies, by increasing the discount rate applied to future profits. The benchmark yield touched 5%, reached a 19-year high and later fell five basis points to 4.94% on Thursday. Sharma said historical data shows the stock-bond relationship becomes positive above 5% and equity prices decline above 5.25%, while policymakers indicated another rate increase could come later this year.