August nonfarm payrolls came in at 162,000, three times the expected number. The market immediately priced the probability of a September rate hike at about 60%, and Microsoft fell 2% that day.

At that very moment, reports surfaced that CEO Nadella sold 86,525 shares, cashing out $43.39 million—this has not been officially confirmed, and no one knows whether it was a planned 10b5-1 transaction. Meanwhile, Morgan Stanley reiterated its "overweight" rating, citing Microsoft’s restructuring of its business in the AI era.

On one side, the CEO may be taking profits at the top; on the other, institutions remain bullish. On one side, interest rates are pressuring valuations; on the other, the AI narrative still has its believers. The real "judge" in this story is the August CPI to be released on September 11. If inflation continues to come in hotter than expected, Microsoft will keep being sold off as a long-duration asset; if it cools, AI capex and cloud demand may once again become the main storyline.

The question is: when insider selling and institutional buying happen at the same time, whose positioning do you trust more?