以色列總理內塔尼亞胡：伊朗曾企圖暗殺我的一名家人。

The U.S. Securities and Exchange Commission is investigating AI hedge fund Situational Awareness after a near-collapse and has issued subpoenas to major Wall Street banks that provided leverage to the fund. The SEC requested trade timestamps, communications between the banks and lenders about borrowed funds, and ordered preservation of all materials related to the fund. Situational Awareness, founded by former OpenAI researcher Leopold Aschenbrunner, peaked at over $30bn AUM and had borrowed tens of billions of dollars to lever positions. Late last month, declines in popular AI stocks and rallies in legacy tech names it had shorted produced rapid losses that forced a "sell-off liquidation"; the fund sold most of its equity portfolio to Citadel at a discount. The SEC said the probe is in its early stages and does not imply enforcement; the fund is not accused of wrongdoing and says it will "fully cooperate with any regulatory request."

美銀圖表顯示，AI十大權重股已佔美國股市總市值約40%，接近1972年“漂亮50”的40%和2000年科技股泡沫時期的41%，但仍低於19世紀鐵路股的63%。 高集中度無法單獨證明泡沫即將破裂，卻意味着指數漲跌、被動資金表現和市場情緒越來越依賴少數公司。AI產業需求和盈利可以繼續增長，但只要業績增速、資本開支回報或估值消化速度低於預期，擁擠持倉就會放大調整。 注意，圖中日本1989年的44%採用全球股市佔比，其餘多數數據採用美國股市佔比，橫向比較存在口徑差異。