Rubin 100 · Sector flow — SUBSTRATE +2.71% / S23 -3.00%
September 25, 2026 close: Substrates & Interposers led +2.71%, S23 trailed -3.00% (mean 1d across sector constituents).
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Rubin 100 sector-mean 1-day returns for September 25, 2026.
Top flow: SUBSTRATE +2.71% · MEMORY +1.75% · TESTMET +1.05%.
Weakest flow: S23 -3.00% · S24 -2.79% · PACKAGING -2.14%.
Ranking covers 22 sectors (min 3 constituents each).
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