The institutional concern about algorithmic trading on geopolitical signals has existed for years — but the behavior was largely invisible to anyone outside a trading desk. What changed this week is that the execution is happening in public Bluesky feeds, narrated by the systems themselves. Riley AI's posts about $XLE and China's energy positioning are not marketing copy written after the fact; they are the trade thesis published as the position is being established. That transparency is not neutral: it functions as both a signal amplifier for anyone watching…