US futures edged fractionally higher to start the week with small-caps outperforming as last week's rally, when euphoric investors bought stocks after Fed Chair Jerome Powell’s dovish tilt at Jackson Hole, fizzled. As of 8:00am ET, S&P 500 futures gained 0.1% while and Nasdaq 100 futures turned red after both indexes notched gains of more than 1% on Friday when Powell’s J-Hole speech cemented the case for an interest-rate cut next month; the debate has now shifted to the size of the cut and what that would say about the state of…