US market fell before the market on Tuesday, focusing on Microsoft s annual developer conference "Build"

Microsoft has now become a leader in the field of artificial intelligence tools. This is partly due to its huge investment in ChatGPT developer OpenAI. Microsoft hopes that after integrating artificial intelligence into its products, various systems in the workplace can be more efficient and bring enough returns to the group to make up for the tens of billions of dollars invested in servers and data centers.

Tuesday (May 20) Focus: Major index futures in the U.S. Wall Street stock market fell on Tuesday (May 20). At the time of 7:00, the Standard & Poole 500 futures fell slightly by 10.90 points or 0.18%, to 5952.70 points; the Nasdaq 100 futures, mainly tech stocks, fell by 61.80 points or 0.29%, to 21,385.20 points; the heavyweight Dow Jones Index futures rose slightly by 12.90 points, to 42,804.80 points. Market investors seem to be disinterested in the downgrade of the U.S. credit rating, so U.S. stocks remained slightly higher at the close of overnight (Monday). This is also the sixth consecutive trading day between the Standard and Poole 500. The Standard & Poor 500 index rose slightly by 5.22 points overnight to close at 5963.60 points. The Dow Jones Index rose 137.33 points and closed at 42792.07 points. The Nasdaq 100 index also rose slightly by 0.09%, or 19.12 points, closing at 21,447.05 points. The U.S. stock market traded overnight, with the total trading volume of the exchange being 19.41 billion shares, which is more than the average trading volume of 17.34 billion shares in the past 20 days.

At the annual developer conference, Microsoft also launched a series of products that provide developers and enterprises with insight into generative artificial intelligence and build artificial intelligence modules. These include a ranking of the best-performing models, a tool that automatically helps developers choose the right model for a specific task, and a new product that allows enterprises to build their own AI models using internal data.

Judging from many of the announcements released at the conference, Microsoft's main force is focusing on developing tools that help users take action. Although Microsoft does not currently have an Anthropic AI model, it says that the ubiquitous Windows operating system of personal computers, as well as other Microsoft products, will support Anthropic's Model Context Protocol. This is a set of standards built by Microsoft to manage the interaction methods of artificial intelligence systems.

Software giant Microsoft announced at the annual developer conference "Build", officially held overnight, that the group will add the model of the world's richest man, the xAI artificial intelligence startup, to its artificial intelligence platform.

Pre-market trading focus:

Microsoft said Musk's artificial intelligence team launched the Grok 3 and Grok 3 mini earlier this year, which will be launched on Microsoft's Azure AI Foundry platform. So far, the group's Azure cloud service customers have already used more than 1,900 AI models, including those of the group's close partners OpenAI, Meta Platforms and DeepSeek. The addition of the xAI model will further expand the selection range of Microsoft customers.

Musk also attended the conference keynote speech by Microsoft CEO Satya Nadella. Musk said he hopes developers can provide feedback on the Grok AI model. "We have made mistakes in the past and will make them in the future, and we are eager to correct them quickly," he said. (Reuters) Microsoft Corporation

Microsoft and its biggest competitors in the sales of computer computing power, including Amazon and Google, are now competing for putting more AI applications into the platforms they each build and deploy. This has also made the struggle for various latest artificial intelligence models a fiercely competitive battlefield.

The U.S. insurance leader's share price fell to its lowest point in five years as the U.S. Department of Justice investigated possible health insurance fraud last week, coupled with a sudden change in its leadership. But according to regulatory filings filed with the U.S. Securities and Exchange Commission (SEC) last Friday (16th), insiders of United Health Group are now starting to buy their own shares at a low price. Its CEO Stephen Hemsley bought 86,700 shares of its own shares at an average of $288.57; Chief Financial Officer John Rex also bought more than 17,000 shares, and director Kristen Gil increased his holdings by 3,700 shares. Other directors such as John Noseworthy and Tim Flynn also bought stocks last week. United Health Group rose 2.76% before the market trading tonight, and was reported at $324.60. Nvidia shares fell 0.24% before trading tonight, with a deadline of $135.24. Nvidia will open its AI server platform to competitors, the company's CEO, said overnight. But he also warned that the U.S. government's move to restrict the export of chips to China could cost the company $15 billion in revenue. The market is currently rumored that chip giant Nvidia is in late negotiations to invest in quantum startup PsiQuantum. This news has caused many quantum stocks to rise before the market tonight. At the time of press time, Arqit Quantum stock price rose 3.54%, Quantum Computing rose 6.09%, Quantum Corp rose 2.86%, and D-Wave Quantum also rose 6.54%. Next on Tuesday, we will take a look at the announcement at the annual developer conference of software giant Microsoft Corporation, "Build". The stock fell by 0.40% before trading tonight, and was reported at $457.04. Pre-market active stocks are in sequence: Nvidia, Tesla, United Health Group, Plug Power and Palantir Technologies. At the time of press time, except for the decline in Nvidia's stock price, the stock prices of the other four active stocks all rose. (NASDAQ: MSFT)