Research preview

The semiconductor sector has just ended an eight‑day slide, the longest streak since 2008, while Indian information‑technology equities posted their biggest weekly gain since the same year, up about 12 %. These divergent moves provide a live laboratory for applying high‑dimensional statistical tools to detect hidden drivers, avoid over‑fitting, and build robust cross‑sectional portfolios. Why the Divergence Matters for Data‑Driven Strategies A sudden reversal in one industry and a breakout in another can be the symptom of a common macro factor—such as global demand for digital infrastructure—or of sector‑specific news, like supply‑chain disruptions for chips versus strong earnings for Indian exporters....