SPY, QQQ and IWM are all sitting in a negative gamma regime right now.

Everyone checks IV rank before selling premium. Almost nobody checks what regime dealers are in, and it costs nothing to look. Positive gamma, they're buying dips and selling rallies to stay flat. Their hedging works against volatility, so realized moves get damped. That's the friendly regime for a short strangle. Theta just quietly does its thing because the market's own hedging flow is on your side. Negative gamma is the opposite. They're selling into weakness and buying into strength, so the hedging pushes the same direction the move is already going. Same strangle, same credit collected, completely different risk. This is how a week that looked dead turns into a gap that tests both legs. Where things sat at Friday's close: * SPY — negative. Spot 769.45, flip up at 788.97. About 19 points of room, all of it in the amplifying zone. * QQQ — negative, but barely. 717.50 against a 720 flip. Close enough that a normal day could flip the regime itself, which is its own kind of risk. * IWM — negative. 295.46 against 297.54. For contrast, NVDA was reading positive. So single names don't automatically sit in the same regime as the index — same strategy, different backdrop entirely. And to be clear, this isn't a direction call. Negative gamma doesn't mean down. It means whichever way it goes, it goes harder.