Welcome to Bull Street Buzz — Sunday, June 28th 2026, 6:51am — Prime Day ends tonight. These deals are still worth buying. - SFGATE — Apple seeks to buy memory chips from blacklisted Chinese company - Financial Times — U.S. government gives Anthropic green light for limited re-release of Mythos 5 - NBC News — OpenAI releases powerful new GPT-5.6 model under restrictions - Axios