Why is BSX down today?
BSX is down 1.6% — inside the β-adjusted expected range. This is normal market-driven volatility.
Intraday Relative Performance
Historical Context · 252 trading days
BSX moves this much or more on 164 of the last 252 trading days — it's within its usual noise.
Expected vs Actual
BSX's move lines up with what the market alone predicts.
Key Drivers
No high-relevance news found in the latest tick.
Editorial Analysis
"BSX's move today falls within the normal range given its sector's move — no anomaly detected."
BSX moved up 0.00% today. Its sector ETF (XLV) moved +0.00%, and BSX's beta to that sector is 0.39, implying an expected move of about 0.00%. The realized move sits within that expected band, so today's volatility shows no sign of being driven by company-specific news.
Days like this are the typical case for BSX: most of the variance is sector-driven, not idiosyncratic. We classify a move as company-specific only when the beta-adjusted residual exceeds 1.5 standard deviations — today's residual is below that line. The takeaway is structural: BSX is moving with its peers, not against them.
Related Sector Movers
No related movers available for this ticker yet.