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Daily session record

Thursday, 24 September 2026

Session of Thursday, 24 September 2026

Convexa versus SPY

Performance shown reflects the actual historical results of the private Convexa strategy for the periods stated. SPY is provided solely as a comparative benchmark and has a materially different risk profile. Past performance is not indicative of future results. Performance Methodology →

24 September 2026

Editor’s Note

Yesterday’s session was relatively calm, with no meaningful directional move in the underlying market. Volatility initially declined, briefly suggesting some normalization after the previous sessions. That move proved temporary. Volatility subsequently reversed higher and continued to rise into the close.

The most notable feature was that both tails of the volatility surface became more expensive at the same time. Risk premium increased in both the downside and upside wings, suggesting that the market was assigning a higher price to protection against a larger move in either direction rather than expressing a clear directional view.

Editor’s Note reflects the author’s market perspective at the time of publication and should be read as commentary, not investment advice.

Market

Session of 24 September 2026
Technical Analysis

The September 24 session finished almost unchanged at the index level, but the calm headline concealed continued weakness beneath the surface. The S&P 500 slipped 0.02% to 7,704.13, the Nasdaq-100 gained 0.03% to 30,478.86, the Nasdaq Composite rose 0.01% to 26,939.37, and the Russell 2000 declined 0.11% to 2,835.57.

The S&P 500 remains above its principal trend references, but only narrowly. At the close it stood approximately 0.52% above its 10-day moving average, 0.42% above its 20-day average and 0.95% above its 50-day average. The long-term cushion remains larger, at approximately 6.99% above the 200-day average.

Breadth remained materially weaker than the capitalization-weighted index. Among current S&P 500 members, approximately 32.5% were above their 10-day averages, 25.4% above their 50-day averages, 36.5% above their 100-day averages and 45.0% above their 200-day averages. Across the broader U.S. common-stock universe, the corresponding readings were 30.6%, 27.2%, 34.5% and 41.1%.

Breadth momentum remained negative. The broad-universe McClellan Oscillator closed near −34.25, declining S&P 500 stocks outnumbered advancers by roughly 1.9 to 1, and new lows continued to exceed new highs. Volatility also rose despite the nearly flat index close, with VIX at 15.67 and VXN at 21.24.

Main technical conclusion: the primary index trend remains intact, but participation continues to deteriorate. The market is holding above major moving averages while an unusually small share of stocks confirms that strength, leaving the short- and medium-term structure fragile.

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Fundamental Analysis

The September 24 fundamental backdrop remained difficult for equities even though the major indexes finished almost unchanged. The U.S. economy continued to show resilience: initial unemployment claims fell to 197,000, while August new-home sales rose 6.4% to an annualized 684,000, well above expectations.

The problem remained the rates-and-inflation channel. The 10-year Treasury yield climbed to 5.196%, its highest level since 2007, while the 30-year yield rose to 5.4816%, its highest since 2004. Brent crude advanced another 3.4% to $106.60, and WTI rose 2.7% to $94.61, reinforcing the inflation risk.

The U.S.–China summit reduced one immediate source of trade risk by extending the tariff truce for two months. However, the extension postponed rather than resolved the central disputes over tariffs, purchases, rare earths and technology restrictions.

Credit remains the main counterweight. The HYG/LQD ratio rose to 0.7551, a tight risk-on reading, while broad high-yield option-adjusted spreads remained low. Lower-quality CCC credit remains much weaker, preserving an important quality divergence.

Main fundamental conclusion: the U.S. growth backdrop remains resilient, but stronger activity, higher oil prices and a renewed rise in Treasury yields are keeping financial conditions restrictive. The immediate recession signal remains limited; the dominant risk is persistent inflation and higher-for-longer policy rates.

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Volatility

Regime. Volatility continued to expand on September 24 even though the major equity indexes finished almost unchanged. VIX rose 3.23% to 15.67, VIX9D increased 3.49% to 13.93, VVIX gained 2.22% to 90.57, and VXN rose 2.31% to 21.24.

Short versus long volatility. VIX3M increased to 18.43 and VIX6M to 20.35. The curve remained in clear contango — 15.67 below 18.43 below 20.35 — so the market continued to price more risk into the medium-term horizon than into the immediate window.

Nasdaq surface. QQQ finished almost unchanged at 741.10, down approximately 0.01%, while VXN rose to 21.24. Twenty-session realized QQQ volatility is approximately 16.2%, leaving the broad Nasdaq implied-volatility proxy roughly 5.0 volatility points above recent realized movement. The January 2027 surface retained pronounced downside skew, while the far-upside call wing remained firm rather than collapsing.

Principal warning. The important feature of the session was the divergence between almost unchanged underlying prices and higher implied volatility. The term structure remains orderly and SKEW was virtually unchanged at 146.04, so this is not a crisis signal; it is a continued accumulation of volatility risk premium.

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Methodology