Weekly Commentary: August 09, 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 rests on two macro inputs from the August 6 vintage: industrial production (INDPRO) growing at +1.1% year over year, which sits inside the 0.0% to 4.0% band the rule set reads as steady expansion, and a yield curve spread of +0.44, meaning longer-term rates sit above shorter-term rates. Together these are labeled as steady expansion rather than early recovery or late-cycle stress.
Technology (XLK) topped the composite at 79.0 and carried the only Buy signal this week. Its score came from a combination of maximum cycle fit (100.0), firm seasonality (66.9), and the strongest relative strength in the group (63.7, with three-month relative strength of +4.94%). Relative strength here measures how a sector is performing against the broad market. No other sector cleared the Buy threshold of 65.
Communications (XLC) drew a Watch flag: its cycle fit is high (100.0) but relative strength (28.9) has not confirmed, so the rule set holds it back from a Buy. Utilities (XLU) was the sole Avoid at 30.8, dragged down by the weakest relative strength on the board (9.8). Everything in between sat in Hold.
Things worth noticing
There are some cross-currents in the underlying columns. XLC shows the highest seasonality reading (71.8) but that carries a thin-sample label, meaning the seasonal average rests on relatively few historical observations and should be read with caution. Its three-month relative strength is also the most negative at -10.95%, which is what keeps it in Watch rather than Buy.
Notice the gap between price action and the headline signals. Healthcare (XLV) has the strongest recent relative strength move (+9.02% over three months) yet sits near the bottom at 41.9, because its cycle fit (35.0) is penalized in a mid-cycle read. Financials (XLF) shows a similar pattern: +6.16% three-month relative strength but a Hold. This illustrates how cycle-fit weighting can hold down sectors that are moving well on price alone.
Worth keeping in perspective: the backtest shows the strategy at +619.57% versus SPY at +626.89% since May 2011, so net of a 1 bps trading cost this rule set did not beat simply holding SPY. Buy-signal excess return was a thin +0.04%.
Methodology reminder
The composite is the weighted sum named above: seasonality 25%, cycle fit 40%, relative strength 35%. Lookahead bias in the backtest is controlled using FRED ALFRED vintages, so each historical week only sees the macro data that was actually published at that time. The backtest figures are a property of this specific rule set over this window, not a forecast of anything ahead.