BIIB · Fibonacci levels
Biogen Inc. - Fib retracement grid
Auto-computed from the 252-day swing window. Key anchors (0.382 / 0.5 / 0.618 / 0.786) match the curated Fib basket QuantAbundance tracks.
Last close
$248.35
52w high
$258.78
2026-10-28
52w low
$151.83
2025-11-07
Range
$106.95
70.4%
Retracements (high → low)
- 0.000$258.78+4.2% from last
- 0.236$233.54-6.0% from last
- 0.382KEY$217.93-12.3% from last
- 0.500KEY$205.31-17.3% from last
- 0.618KEY$192.68-22.4% from last
- 0.786KEY$174.72-29.6% from last
- 1.000$151.83-38.9% from last
Extensions (past high)
- 1.272$287.87+15.9% from last
- 1.414$303.06+22.0% from last
- 1.618$324.88+30.8% from last
- 2.000$365.73+47.3% from last
- 2.618$431.83+73.9% from last
Educational tools. Outputs are math, not advice. Verify against your broker before placing any order.