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 QuantAbundancia tracks.
Last close
$218.50
52w high
$226.00
2026-05-14
52w low
$131.52
2025-08-29
Range
$94.480
71.8%
Retracements (high → low)
- 0.000$226.00+3.4% from last
- 0.236$203.70-6.8% from last
- 0.382KEY$189.91-13.1% from last
- 0.500KEY$178.76-18.2% from last
- 0.618KEY$167.61-23.3% from last
- 0.786KEY$151.74-30.6% from last
- 1.000$131.52-39.8% from last
Extensions (past high)
- 1.272$251.70+15.2% from last
- 1.414$265.11+21.3% from last
- 1.618$284.39+30.2% from last
- 2.000$320.48+46.7% from last
- 2.618$378.87+73.4% from last
Educational tools. Outputs are math, not advice. Verify against your broker before placing any order.