DELL — factor decomposition (Technology)

How much of DELL's move over the window is systematic (market, XLK sector-excess, rate-excess via TLT) vs. idiosyncratic (stock-specific).

Return decomposition (log-return points, additive)

Market+40.79ppSector (excess)-0.00ppRate (excess)-0.00ppIdiosyncratic+79.34pp

Factor betas

Beta · Market (SPY)+1.98
Beta · Sector-excess (XLK)+1.67
Beta · Rate-excess (TLT)+0.43
R²0.26
Window2025-06-30 → 2026-07-31 (274 trading days)

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Moderate confidence: R² is 0.26 — these three factors explain some but not most of DELL's day-to-day variance. Treat the split below as directional.

Of DELL's +120.1pp move over this window, +79.3pp (66% of the total magnitude) is idiosyncratic — not explained by riding market, sector, or rate moves. The rest (+40.8pp) came from systematic exposure: market +40.8pp, sector -0.0pp, rate -0.0pp.

Generated 2026-08-01 18:46 UTC · factor-decomposition · simple 3-factor OLS (market, sector-excess, rate-excess, mutually orthogonalized) · log returns, additive over the window · a transparent estimate, not a commercial risk model — treat betas as directional, always check R² first.