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Market note AH ·

Rubin 100 · Sector rotation — S21 → THERMAL

Rubin sector rotation: S21 → THERMAL leads at 0.66%.

AI-generated — produced automatically by Closelooknet’s systems under this site’s editorial policy.

Rubin 100 constituent 5-day return ranking shows a rank-1 sector flip on October 12, 2026: Thermal Management (THERMAL) moved to the top at 0.66%, displacing S21 (S21), which printed 2.13% when last leading and now sits at rank 4.
Top-3 by mean 5-day return: 1. Thermal Management 0.66% · 2. S19 0.26% · 3. Gases, Chemicals & Consumables 0.12%. Highest constituent in the new leader: 3653.TW at 4.22%.
→ closelook.net/indices/rubin/