Alphabet Loses $200B in Market Cap After Bloomberg Reports Gemini 3.5 Pro Delayed by Months

Alphabet shares fell 4.5% on July 16, wiping out about $200 billion in market capitalization, after Bloomberg reported that Google's Gemini 3.5 Pro AI model is months behind schedule due to coding performance issues. The delay follows the departure of key researchers Noam Shazeer and John Jumper from Google DeepMind, intensifying competitive pressure from OpenAI and Anthropic.

Alphabet Loses $200B in Market Cap After Bloomberg Reports Gemini 3.5 Pro Delayed by Months - Alphabet shares closed down roughly 4.5% on July 16, wiping out approximately $200 billion in market capitalization after Bloomberg reported Gemini 3.5 Pro is months behind schedule 1 https://ca.finance.yahoo.com/news/alphabet-stock-falls-report-gemini-185009759.html - The delay centers on coding performance shortcomings — a late-June update to training data with additional programming examples failed to meet internal expectations 3 https://www.businesstoday.in/technology/news/story/googles-gemini-3-5-pro-delayed-performance-falls-short-of-expectations-543524-2026-07-17 - The setback follows the departures of Transformer co-inventor Noam Shazeer to OpenAI and Nobel laureate John Jumper to Anthropic from Google DeepMind in June 4 https://fortune.com/2026/06/23/google-deepmind-ai-researcher-departures-raise-doubts-about-ability-to-win-the-ai-race-shazeer-jumper-eye-on-ai/ - OpenAI and Anthropic have widened their lead in AI coding capabilities, intensifying competitive pressure on Google 2 https://www.benzinga.com/markets/tech/26/07/60512118/alphabet-stock-sinks-on-reports-of-google-gemini-delays - Google said it is 'currently testing 3.5 Pro' with partners but provided no updated release timeline 3 https://www.businesstoday.in/technology/news/story/googles-gemini-3-5-pro-delayed-performance-falls-short-of-expectations-543524-2026-07-17 Alphabet shares sank roughly 4.5% on Thursday, erasing approximately $200 billion in market capitalization, after Bloomberg reported that the release of Google's most powerful AI model, Gemini 3.5 Pro, has slipped by several months. GOOGL closed near $354, down from an opening price of $373.20, marking one of the stock's steepest single-day declines this year 1 https://ca.finance.yahoo.com/news/alphabet-stock-falls-report-gemini-185009759.html 2 . The delay stems from the model's underperformance in coding — a commercially critical capability where rivals OpenAI and Anthropic have pulled ahead. Google updated its training data in late June with additional programming examples, but the improvements fell short of internal benchmarks, prompting the company to restart portions of its training process 3 . The stock drop compounds a difficult stretch for Google DeepMind. In mid-June, Transformer co-inventor Noam Shazeer left for OpenAI and Nobel Prize-winning researcher John Jumper departed for Anthropic within 48 hours of each other, a talent exodus that sent GOOGL down more than 5% at the time 4 https://fortune.com/2026/06/23/google-deepmind-ai-researcher-departures-raise-doubts-about-ability-to-win-the-ai-race-shazeer-jumper-eye-on-ai/ 5 . What Happened Google first announced Gemini 3.5 Pro at its I/O developer conference in May, saying the model was being used internally and would be available for a broader rollout the following month. That June launch date has now slipped indefinitely. Bloomberg reported July 16 that the model is months behind schedule, with no new public timeline announced 1 . The core issue is coding performance. Gemini 3.5 Pro's ability to write, understand, and debug software code lagged behind competitors — a significant gap given that AI-assisted coding has become one of the fastest-growing commercial applications of large language models. Google attempted to close the gap by enriching its training data with programming examples in late June, but the results did not meet expectations, and the company has since restarted its training process 3 . A Google spokesperson acknowledged the delay obliquely, telling reporters: 'We're shipping quickly across a wide range of models while keeping them highly cost-effective for customers. We're currently testing 3.5 Pro, an upgraded Flash model, and other models with partners, and we're productively engaged with the US government on model testing and broader frameworks' 2 . The Talent Drain The model delay arrives against a backdrop of high-profile departures from Google DeepMind that have shaken investor confidence. In mid-June, Noam Shazeer — co-author of the foundational 2017 'Attention Is All You Need' Transformer paper and creator of Google's LaMDA chatbot — left to join OpenAI. Within 48 hours, John Jumper, who shared the 2024 Nobel Prize in Chemistry with DeepMind CEO Demis Hassabis for developing AlphaFold, departed for Anthropic 4 https://fortune.com/2026/06/23/google-deepmind-ai-researcher-departures-raise-doubts-about-ability-to-win-the-ai-race-shazeer-jumper-eye-on-ai/ 5 . Shazeer had previously criticized Google as 'too bureaucratic, slow-moving, and risk-averse.' He had left Google once before to co-found Character.ai, only to be rehired in 2024. Current and former employees have described DeepMind's culture as burdened by organizational size and slow to commercialize innovations 5 . The twin departures sent GOOGL shares down more than 5% on June 23. Combined with the July 16 sell-off, the two events have wiped out more than $400 billion in shareholder value within a month 4 . Competitive Pressure The Gemini delay widens an already uncomfortable gap between Google and its primary AI rivals. OpenAI recently released GPT 5.6 Sol, which the company said is 54% more token-efficient on agentic coding tasks than its predecessor. Anthropic, meanwhile, has released its Claude Fable 5 and Mythos 5 models following government safety reviews 3 . Multiple teams across Google — spanning DeepMind, Cloud, Android, and Search — are simultaneously developing AI coding tools, a structure that has contributed to overlapping efforts, shifting priorities, and slower execution, according to the Bloomberg report. Google's current models now rank outside the top five on several major AI benchmarks 2 https://www.benzinga.com/markets/tech/26/07/60512118/alphabet-stock-sinks-on-reports-of-google-gemini-delays 5 . The organizational complexity stands in contrast to the more vertically integrated structures at OpenAI and Anthropic, where model development and product releases are more tightly coupled. For Google, the challenge is compounded by the need to integrate AI capabilities across its sprawling product ecosystem — from Search and Maps to YouTube and Google Cloud 2 . Market Reaction and What's Next GOOGL opened at $373.20 on July 16, briefly touched $375.27, then collapsed through the session to close near $354 — a decline of approximately 4.5% and a loss of roughly $200 billion in market capitalization 1 https://ca.finance.yahoo.com/news/alphabet-stock-falls-report-gemini-185009759.html 2 . Alphabet reports second-quarter earnings later this month, where CEO Sundar Pichai will face questions about the model delay, the talent exodus, and how Google plans to regain competitive footing in AI. The company has not provided a revised timeline for Gemini 3.5 Pro's public release 3 . Despite the turbulence, some institutional investors remain bullish. Warren Buffett's Berkshire Hathaway has maintained its position in GOOGL, and Google's core advertising business continues to generate substantial free cash flow. But the AI narrative — which helped drive Alphabet's market cap above $4.5 trillion earlier this year — has shifted from tailwind to headwind 6 . Companies mentioned Further sources 1 Alphabet stock falls on report of Gemini AI model delays — Yahoo Finance ↗ https://ca.finance.yahoo.com/news/alphabet-stock-falls-report-gemini-185009759.html 2 Alphabet Stock Sinks on Reports of Google Gemini Delays — Benzinga ↗ https://www.benzinga.com/markets/tech/26/07/60512118/alphabet-stock-sinks-on-reports-of-google-gemini-delays 3 Google's Gemini 3.5 Pro delayed; Performance falls short of expectations — Busi… ↗ https://www.businesstoday.in/technology/news/story/googles-gemini-3-5-pro-delayed-performance-falls-short-of-expectations-543524-2026-07-17 4 As top talent leaves Google DeepMind, some question if the lab can remain at th… ↗ https://fortune.com/2026/06/23/google-deepmind-ai-researcher-departures-raise-doubts-about-ability-to-win-the-ai-race-shazeer-jumper-eye-on-ai/ 5 Google DeepMind loses star power — Axios ↗ https://www.axios.com/2026/06/23/ai-lab-agi-google-deepmind-departures 6 GOOGL Stock Falls 5% As Google's Flagship AI Model Reportedly Runs Behind Sched… ↗ https://finance.yahoo.com/technology/ai/articles/googl-stock-falls-5-google-204409196.html The stories that matter, in one email. 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