In a relatively quiet session on Tuesday, Wall Street continued its upward momentum, with major indices poised for their fourth straight positive session. The S&P 500, Nasdaq 100, and Dow Jones all posted modest gains, driven by a lack of significant economic data and minimal updates on earnings from large-cap companies.

During midday trading in New York, the S&P 500 saw a 0.2% increase, mirroring similar gains in the tech-heavy Nasdaq 100 and the Dow Jones. Additionally, small-cap stocks represented by the iShares Russell 2000 ETF performed notably well, rising 0.8%.

On the fixed income front, Treasury yields observed a slight decline across various maturities, with a 6 basis point drop. The 10-year benchmark yield decreased to 4.4%, marking a fifth consecutive day of declines. This led to a continued rally in bonds, with the iShares 20+ Year Treasury Bond ETF recording a 1.1% increase.

In corporate news, chipmaker Palantir Technologies Inc. witnessed a significant drop of over 13% in its shares following weaker-than-expected guidance. At the same time, Walt Disney Co saw a sharp decline of over 10%, setting it on track for its worst performance day since November 2022.

In the cryptocurrency and precious metals markets, Bitcoin remained stable at $63,800, while both gold and silver saw a 0.5% decline.

In terms of sector performance, the Real Estate Select Sector SPDR Fund outperformed, rising 1.1%, followed by the Materials Select Sector SPDR Fund, which saw a 1% increase. On the other hand, the Consumer Discretionary Sector SPDR Fund lagged behind, showing a 0.3% decrease.

Among individual stocks, Rivian Automotive Inc. climbed over 5% amid rumors of a potential partnership with Apple Inc. Simon Property Group Inc. also recorded a notable increase of over 3% following the company's upbeat results for the previous quarter. However, Lucid Group Inc. fell over 14% after posting mixed quarterly results.

Other stocks that reacted to earnings included GlobalFoundries Inc., which rose over 8%, and Vertex Pharmaceuticals Inc., which saw a decline of over 10%. Duke Energy Corp. witnessed a 1% increase, while Transdigm Group Inc. fell 2%. DBA Sempra, Kenvue Inc., Rockwell Automation Inc., Microchip Technology Inc., Williams Companies Inc., Fidelity National Information Services, and Axon Enterprise Inc. also experienced varying degrees of stock movement.

Looking ahead, several companies are set to report their earnings after the market's close, including Arista Networks, Inc., Coupang, Inc., Electronic Arts Inc., GoPro, Inc., iRobot Corporation, Luminar Technologies, Inc., Match Group, Inc., Occidental Petroleum Corporation, Reddit, Rivian Automotive, Inc., Twilio Inc., Wynn Resorts, Limited, RingCentral, Inc., and Lyft, Inc.

Overall, despite the declines in Disney and Palantir shares, the US stock market continued its upward trend, fueled by positive sentiment and anticipation over upcoming earnings releases.