High-Stakes Trading: Teslas Volume Leads Amid Mixed Market Moves and Insider Strategies

1. Tesla (Nasdaq: TSLA)
Tesla dipped mildly by -2.25%, with the trading volume of 30.11B. Ross Gerber, former long-term investor, has turned bearish on Tesla, selling more shares in Q1. Tesla's planning to launch paid robotaxi services in Texas next month and expand to California later in the year.

2. Nvidia (Nasdaq: NVDA)
Nvidia gained mildly by 0.13%, with the trading volume of 26.05B. NVIDIA is expanding its presence in Shanghai, renting office space and hiring talent, while launching GB300 chipset in Q3 with NVLink authorization. It partners in Taiwan and Europe for AI advancements amid US-China tech tensions.

3. Unitedhealth Group Incorporated (NYSE: UNH)
Unitedhealth Group Incorporated surged by 8.21%, with the trading volume of 19.34B. UnitedHealth Group faced a downgrade in stock rating by Bank of America due to expected executive turmoil impacting 2025 performance projections. Truist Securities also lowered UnitedHealth Group's target price to $360.

4. Microsoft (Nasdaq: MSFT)
Microsoft gained mildly by 1.01%, with the trading volume of 9.76B. Microsoft is reportedly developing an x64 emulator to enable Xbox games to run on PCs and plans to introduce a large screen mode similar to Steam. Microsoft has also open-sourced its WSL and launched GitHub's Copilot AI for automated programming.

5. Apple (Nasdaq: AAPL)
Apple dipped mildly by -1.17%, with the trading volume of 9.58B. Apple collaborates with Fudan University to launch StreamBridge Video-LLMs framework for AI video understanding. Foxconn invests $1.5 billion to boost iPhone production in India. Apple tests AI chatbot with capabilities akin to ChatGPT.

6. Palantir Technologies (NYSE: PLTR)
Palantir Technologies dipped mildly by -2.46%, with the trading volume of 9.13B. Palantir Technologies faced a recent downturn due to the US credit rating downgrade impacting market sentiment. Prominent investors like George Soros and Ray Dalio are making strategic investment decisions.

7. Amazon (Nasdaq: AMZN)
Amazon.Com gained mildly by 0.28%, with the trading volume of 7.05B. Amazon (AMZN) disclosed three insider trades on May 19, 2025, with executive Herrington Douglas J selling 3,284 shares on May 15, 2025. Additionally, Audible, Amazon's audiobook brand, announced plans to use AI for narration and translation amidst industry debates.

8. Meta Platforms (Nasdaq: META)
Meta Platforms gained mildly by 0.01%, with the trading volume of 6.12B. Meta disclosed 24 insider trades on May 19, 2025. Executive Bosworth Andrew sold 11,000 shares on May 16, 2025. Additionally, Meta faces criticism over inadequate content moderation, becoming vulnerable to scams. Its $400 billion metaverse project faces significant cutbacks.

9. Microstrategy Incorporated (Nasdaq: MSTR)
Microstrategy Incorporated gained solidly by 3.41%, with the trading volume of 5.23B. On May 19, 2025, Microstrategy disclosed three insider transactions. Director Patten Jarrod M purchased 2,100 shares on May 16, while the company bought 7,390 Bitcoin worth $7.649 billion.

10. Alphabet (Nasdaq: GOOGL)
Alphabet gained mildly by 0.21%, with the trading volume of 5.04B. Waymo has been authorized to expand its autonomous taxi operations in the San Francisco Bay Area. Google admitted potentially needing publisher permissions for its AI search system as it showcased AI advancements at I/O 2025.