Amgen closed at $478.48 on Nov 4, up 3.73% — matching its 52-week closing high. Volume of 4.6M shares was 1.75× its 20-day average (above normal).
Split-adjusted performance: +18.8% over one month, +44.5% over six months, +61.5% over one year.
In the quarter ended Jun 30, 2026, revenue was $10.05B, up 9.5% from a year earlier, with a net margin of 23.6%.
Short interest was 13.4M shares at the Oct 15 settlement, down 4.6% from the prior report (2.5% of float, 5.0 days to cover).