If I had bought XBI
If I had bought XBI
Dates within the last week use the minute candle — accurate to the minute of purchase.
Ready examples: $100 put into XBI
a week ago+3.5%$100 → $103
a month ago+10.4%$100 → $110
since our history starts, July 15, 2026+5.7%$100 → $106
Dates within the last week use the minute candle — accurate to the minute of purchase.
A year of buying XBI
Over the last 41 days XBI closed between $144.64 (August 1, 2026) and $169.67 (August 19, 2026). One hundred dollars put in at the low would be worth $115 today; at the high, $98. The current price $165.76 is above 39 of those 41 daily closes, so a purchase on a random day of that stretch would be in profit 95% of the time — fees aside.
A typical day moves XBI by 2.4%: a $1,000 position swings about $24 a day.
Low of the stretch$144.64 · $100 → $115
High of the stretch$169.67 · $100 → $98
Share of profitable dates95% · 39/41
The same calculation for neighbouring instruments
Calculators for other instruments in the “exchange-traded fund” category.