US stock futures remained mostly stable on Wednesday, following another surge in technology stocks during the prior session. On Tuesday, the S&P 500 experienced a 0.72% increase, while the Nasdaq Composite rose by 1.61%, celebrating its fifth consecutive session of gains. Conversely, the Dow Jones Industrial Average declined by 0.64%, primarily due to a significant drop in UnitedHealth's stock. The S&P 500 has now returned to positive territory for the year, supported by reduced US-China trade tensions and favorable inflation data, which enhanced investor confidence. Nvidia's stock climbed by 5.6% following the announcement of a major AI chip agreement with Saudi Arabia, which in turn boosted related stocks such as AMD and Broadcom, both of which rose by more than 4%. Additionally, Coinbase saw a 24% increase after its inclusion in the S&P 500 index. Elsewhere, the social trading platform eToro set its initial public offering price at $52 per share.