Rubin 100 · Sector flow — FOUNDRY +3.11% / SUBSTRATE -5.58%
May 19, 2026 close: Foundry & Integration led +3.11%, Substrates & Interposers trailed -5.58% (mean 1d across sector constituents).
Rubin 100 sector-mean 1-day returns for May 19, 2026.
Top flow: FOUNDRY +3.11% · PACKAGING -1.30% · DEPETCH -1.51%.
Weakest flow: SUBSTRATE -5.58% · MATERIALS -5.25% · EDA -3.85%.
Ranking covers 16 sectors (min 3 constituents each).
→ closelook.net/indices/rubin/