Weekly Commentary: September 13, 2026
⚠️ Not financial advice. This is auto-generated each week by Anthropic's Claude (an AI model). Brian Beals is not a registered investment advisor, and Anthropic's Claude is not licensed to provide personalized financial advice. The screener is a research and methodology demo, not a recommendation system. Past performance does not predict future results. Do your own research before making any investment decisions.
By Brian Beals. Methodology and code: github.com/brianbeals/sector-rotation-screener. Commentary generated by Anthropic's Claude (claude-opus-4-8).
What the screen said this week
The screen classified the current environment as mid-cycle. That call comes from industrial production (INDPRO) growing +1.1% year over year, which sits inside the 0.0% to 4.0% band the rule set treats as steady expansion, combined with a positive yield curve reading of +0.39. In plain terms, the macro inputs point to ongoing but unremarkable growth rather than an early rebound or a late-cycle stretch.
Technology (XLK) and Communications (XLC) topped the composite at 73.1 and 67.9, the only two sectors flagged Buy under this rule set. Both were driven primarily by a maximum cycle fit score of 100, meaning the rules consider these sectors well aligned with the mid-cycle phase. Their relative strength (RS), a measure of price performance versus the broad market, was moderate at 60.3 and 56.5. Notably, both carried negative 3-month relative returns (-1.31% and -3.17%), so the Buy label here rests more on cycle fit than on recent price leadership.
No sectors met the Watch criteria this week (cycle fit at or above 80 with RS below 45). Six sectors landed in Avoid territory (composite at or below 40): Real Estate, Industrials, Healthcare, Consumer Staples, and Materials, largely on weak seasonality or low relative strength.
Things worth noticing
Energy (XLE) is an interesting case. It posted the strongest relative strength in the table at 75.7, with a +11.00% 3-month relative return, yet only scored a Hold. Its cycle fit of 50.0 held the composite down to 58.8. This is the reverse of the top two names: strong price action, middling cycle alignment.
The two Buy sectors show the opposite pattern, top cycle fit paired with negative recent relative returns. That divergence between what the cycle model favors and what price has been doing is worth flagging rather than resolving.
Communications carries a "thin sample" note on its seasonality input (32.4). Thin sample means fewer historical observations feed that seasonal figure, so it deserves less weight than a fuller series would.
Methodology reminder
The composite is a weighted sum: Seasonality 25%, Cycle Fit 40%, and Relative Strength 35%. Lookahead bias in the backtest is controlled using FRED ALFRED vintage data, meaning each historical point uses only the macro figures that were actually available at that time. The backtest result since May 2011 is a property of this specific rule set, not a forecast.