Alphabet Inc. shares fell sharply following the high-profile departures of two top artificial intelligence pioneers to chief rivals, overshadowing Google DeepMind's newly announced cinematic research partnership with film studio A24. Nobel Prize laureate John Jumper left Google DeepMind for Anthropic, closely following Gemini co-lead Noam Shazeer’s sudden move to OpenAI. Alphabet Inc. (GOOG, GOOGL) shares plummeted more than 5% Monday, its worst one-day fall in over a year. Google DeepMind launched a multi-year creative partnership and financial investment with independent studio A24 to develop artist-guided filmmaking software. The long-term partnership embeds artificial intelligence researchers directly into the filmmaking process to build and refine new storytelling technologies. As part of the broad agreement, Google has also made a financial investment in A24. Financial details and the size of the stake were not immediately disclosed. Eli Collins, Vice President of Product at Google DeepMind, noted that the initiative will span multiple research and development projects over time.