Google DeepMind lost four senior leaders in ten weeks: Gemini co-lead Noam Shazeer left for OpenAI June 17, AlphaFold creator John Jumper left for Anthropic June 19, chief scientist Jeff Dean departed after 27 years August 5, and Demis Hassabis moved from CEO to Chairman the same day, ceding day-to-day control to Koray Kavukcuoglu.

Gemini 3.5 Pro missed its ship date three times, is reported months behind schedule on weak coding benchmarks, and remains limited-preview only; Alphabet shares fell 4% on the July 16 report. Google shipped 3.6 Flash, 3.5 Flash-Lite, and 3.7 Flash instead — the workhorse tier advances while the flagship stalls.

Q2 2026 shows the conversion accelerating: Cloud revenue $24.8B, up 82% year-over-year from 48% growth a quarter earlier; Cloud operating income $8.8B against $2.8B a year prior; backlog $514B, up from $460B in Q1 and $106B a year ago. Berkshire raised its Alphabet stake 45% in the quarter, beyond the separate $10B equity commitment.

Alphabet's market cap has fallen from the $4.8T high cited in the standing thesis to $4.22T in mid-August and $4.14T by September 11 — a 14% re-rating even as Cloud economics improved, signaling the broader AI-capex cycle is repricing hyperscaler multiples ahead of, not behind, execution risk.