2 sectors are rotating · 9 stable
Two of eleven S&P 500 sectors flipped relative-strength sign over the past 30 calendar days versus the same calendar window a year ago: Industrials (XLI) and Consumer Discretionary (XLY). Both rotated turning_negative — they led SPY in the May 2025 reopening tape and now lag it as the 2026 rally has narrowed onto Technology (XLK +19.8% in 30 days, RS +14.5pp). No sector turned positive this scan; leadership is concentrating, not rotating. The single most informative signal sits inside Industrials. The headline sector is down 0.8% with RS -6.1, but aerospace and defense ETFs ITA (+7.7%) and XAR (+11.1%) attracted roughly $642M of combined 10-day net money flow while XLI itself bled $4.1B. Institutional capital is paying up for defense exposure and selling broad cyclicals — the rotation inside the sector is sharper than the sector flip itself. In Discretionary, XLY's flow remains positive ($1.78B in) because mega-cap weights are still working, but the only pure-retail ETF in the top 5 (RTH) printed a net outflow on a -3.7% drawdown, revealing that breadth has decayed even where the cap-weighted return looks fine. Among the 9 stable sectors, XLK's RS leadership intensified from +3.7 to +14.5; Utilities, Energy, and Comm Services deteriorated further; Health Care narrowed its gap from -11.9 to -2.9 but remained on the wrong side of zero.
Industrials
XLIA year ago industrials were a leading cyclical, +8.8% versus SPY's +6.3% as 2025 reopening and infrastructure capex narratives bid the group. The 2026 read is the opposite — XLI is the only sector with five-handle SPY-relative lag (-6.1pp) and the broad fund just printed a $4.1B 10-day net outflow. But the rotation is bifurcated, not uniform: aerospace and defense ETFs ITA (+7.7%) and XAR (+11.1%) attracted roughly $642M of combined money flow on geopolitical/budget tailwinds. The implication is that allocators are paying up for defense beta while exiting broad cyclical exposure — machinery, transports, and electrical equipment are being de-rated even as defense rallies. The barbell explains why XLI's headline return is barely negative while its flow is sharply negative.