Treasury yields rose across the curve, with the 30-year briefly returning to levels seen before Wednesday's Treasury buyback announcement, while oil prices continued to climb as US-Iran relations continue to show no signs of improvement.

The S&P 500 just triggered a bullish signal, barely.

(Bloomberg) -- A rebound in long-dated Treasuries ran out of steam and US stock futures struggled for direction as rising oil prices brought inflation risks back to the fore.

Major US stock indexes opened lower on Thursday. Rising government bond yields hurt investor sentiment significantly. Retail giant Walmart reported a rare sales miss,…