Flat Close Masks Brutal Internals: $200M Put Sweep Barrage Defines the Session

Tuesday looked like a nothing day on the surface — SPY closed exactly flat, IWM flat, QQQ down a rounding error. But underneath, the market absorbed over $200 million in aggressive 0DTE put sweeps across SPY and QQQ strikes clustered between 703 and 737, while NYSE breadth cratered to a 0.41 advance/decline ratio with 1,128 more decliners than advancers. MSFT shed roughly 13 points intraday, opening at 429.90 and closing near session lows at 416.51 — a violent 3% drawdown from a single name that injected real selling pressure into mega-cap tech.

The flat closes are deceiving. SPY swung 6.12 points from low to high. QQQ traded an 11.24-point range. IWM reached as high as 275.07 before giving back all gains to close at 272.97. The put wall held as a lid, the session internals read distinctly bearish, and the close leaves all three names sitting inside negative GEX territory heading into Wednesday. The setup for the next session is not as calm as the closing prints suggest.