US Futures Flat Ahead of Walmart Earnings as Treasury Expands Debt Buybacks

SentiSense · Published Aug 19, 2026, 4:07 PM ET · Updated Aug 20, 2026, 9:56 AM ET

U.S. stock futures were largely unchanged on August 20, with a modest Nasdaq tilt higher as traders processed rising oil prices and a rebound in long‑end Treasury yields. Walmart's earnings release and economic data were awaited, while the Treasury announced it will double the size of its debt buyback program to at least $4 billion, targeting 10‑ to 30‑year bonds. These developments together shaped a cautious market tone.

U.S. equity futures were roughly flat on the morning of August 20, with a slight Nasdaq tilt higher, as traders balanced firmer oil against a bid returning to the long end of the Treasury curve. WTI traded near $86.80 and Brent around $93.90, lifted by Middle East tensions and President Trump's announced economic pressure campaign on Iran, while the 10-year yield sat around 4.65% to 4.67% and the 30-year near 5.22% ahead of WMT's earnings and the day's data.

The more consequential item was fiscal plumbing. The Treasury disclosed an expansion of its debt buyback operations, raising the maximum operation size from $2 billion to at least $4 billion and concentrating purchases in the 10- to 20-year and 20- to 30-year sectors, with operations scheduled from September 9 through November 4. The move follows what CNBC described as a buyers' strike in that part of the curve since late June. Yields fell on the news, with the 10-year down six basis points to 4.647% and the 30-year down nine basis points to 5.196%.

That combination sets up a genuine tug of war. Higher crude supports energy names and feeds through to headline inflation, which argues for higher long-end yields, while a larger official bid for long paper works in the opposite direction. Equity valuations, particularly for the long-duration megacap complex that drives the Nasdaq, sit directly on the outcome of that contest.

Walmart's print later in the session carried the consumer read, and it landed mixed: a revenue and EPS beat alongside the slowest U.S. comparable sales growth in more than six years.

What to watch: whether the expanded buyback holds long-end yields down once the September 9 operations actually begin, the persistence of the oil bid if Middle East headlines cool, and whether long-duration equity leadership reasserts itself as term premium compresses.