Summary: The chip complex lost 5.9% and the index lost half a percent. The interesting part is what the option market did about Friday overnight.
MARKET REGIME: TRANSITIONING | VIX 17.10 | TERM STRUCTURE: CONTANGO | SKEW: ELEVATED (152.09) | FRONT-MONTH VIX FUTURES: 16.89
- Friday’s expiry refused to decay. The 18 September contract prices 100.90 points, or 1.32%, against 101.65 quoted yesterday morning. One session has come off the clock, so time alone would have left roughly 91. About 10 points of volatility premium went in overnight.
- The selling was narrow, not broad. A semiconductor gauge fell 5.9% and Nvidia 3.4%, while software rose 5.04% and healthcare 1.45%. The S&P 500 gave up 0.48% and its equal-weighted version added 0.04%.
- One session has used the week’s volatility budget. The VIX closed 17.10, above the 16.96 that Friday’s option chain set as the top of its range for the whole week.
Vol surface data: Saxo, Bloomberg, CBOE, as of 15 September 2026, approx. 07:18 CET. Past performance is not indicative of future results.