1. What's Happening This Week Triple Witching Close: Indexes closed higher, the semiconductor index +2.78%, Bitcoin broke above $80,000, WTI crude -1.81%, gold closed at 4,415. β Oil prices are the key variable determining the rate path: a substantive pullback in oil would set the stage for global asset strength. Buybacks Enter a Pause Period: 10% of S&P 500 weighting has suspended buybacks, rising to 61% by 9/30, with most windows not reopening until 11/1. β The market's largest "real-money buyer" will be absent for the next five weeks. Nasdaq 100 Quarterly Rebalance: SpaceX weighting rises to 2.82%, with PANW, ANET, SNDK, and DELL added; the S&P 500 adds BE and ILMN. β Forced passive fund flows create deterministic buying around the effective date. Anthropic IPO Delayed: From Oct