If I had bought BIIB
If I had bought BIIB
Dates within the last week use the minute candle — accurate to the minute of purchase.
Ready examples: $100 put into BIIB
a week ago+1.0%$100 → $101
a month ago+0.1%$100 → $100
since our history starts, August 5, 2026+3.7%$100 → $104
Dates within the last week use the minute candle — accurate to the minute of purchase.
A year of buying BIIB
Over the last 48 days BIIB closed between $203.48 (August 11, 2026) and $223.96 (September 7, 2026). One hundred dollars put in at the low would be worth $107 today; at the high, $97. The current price $216.77 is above 27 of those 48 daily closes, so a purchase on a random day of that stretch would be in profit 56% of the time — fees aside.
A typical day moves BIIB by 3.7%: a $1,000 position swings about $37 a day.
Low of the stretch$203.48 · $100 → $107
High of the stretch$223.96 · $100 → $97
Share of profitable dates56% · 27/48
The same calculation for neighbouring instruments
Calculators for other instruments in the “company stock” category.