Rubin 100 · Sector flow — POWERSEMI +1.17% / MATERIALS -4.16%
October 21, 2026 close: Power Semiconductors led +1.17%, Advanced Materials trailed -4.16% (mean 1d across sector constituents).
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Rubin 100 sector-mean 1-day returns for October 21, 2026.
Top flow: POWERSEMI +1.17% · FOUNDRY +1.12% · S23 +0.73%.
Weakest flow: MATERIALS -4.16% · S21 -3.21% · PACKAGING -2.81%.
Ranking covers 22 sectors (min 3 constituents each).
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