The three major US stock index futures rose Tuesday, with Nasdaq futures turning positive, Dow Jones futures up 0.35% and S&P 500 futures up 0.19%, according to BIT market data.The Move Follows a Weaker ADP PrintThe bid arrives after ADP private payrolls showed a 38,000 increase for August — the smallest gain since January, below the 48,000 expected and down from 44,000 the prior month.Weak labor data supports equities through the rate channel. Traders currently assign roughly 68% probability to a 25 basis point hike at the September 16 Fed meeting, up from about 36% before Chair Kevin Warsh's Jackson Hole address. Any data that compresses that figure relieves pressure on valuations.The Nasdaq turning positive from a negative open is the more specific signal. Tech carries the longest duration in the equity market and is therefore most sensitive to the discount rate — it moves first and furthest when rate expectations shift.The Backdrop It Is FightingThe gains come against a difficult macro setup. The US 10-year Treasury yield sits above 4.81% and the dollar index at 99.85, with global bond yields surging — Japan's 10-year reached 3% this week for the first time since 1996.Brent crude hovers just above $90 after US military action near the Strait of Hormuz, and Warsh specifically flagged commodity prices at Jackson Hole as bearing watching for upside inflation risk.Gold fell to $4,300 and Bitcoin below $77,000 in the same environment, both pressured by the rising opportunity cost of holding non-yielding assets.Friday's Payrolls Is the Real TestADP is a private estimate that diverges from the Bureau of Labor Statistics figure often enough to function as a directional hint rather than a forecast.The official August nonfarm payrolls report arrives Friday at 8:30 a.m. ET with consensus around 58,000. July printed −23,000, and May and June were revised down by a combined 103,000.Bloomberg Chief Economist Anna Wong has argued the August report may come in weak or negative, noting there is no precedent in modern Fed history for hiking after two consecutive negative payroll readings.