If I had bought BRKB
If I had bought BRKB
Dates within the last week use the minute candle — accurate to the minute of purchase.
Ready examples: $100 put into BRKB
a week ago+3.9%$100 → $104
a month ago+11.8%$100 → $112
three months ago+8.5%$100 → $108
since our history starts, May 18, 2026+15.3%$100 → $115
Dates within the last week use the minute candle — accurate to the minute of purchase.
A year of buying BRKB
Over the last 172 days BRKB closed between $471.77 (June 1, 2026) and $578.12 (November 4, 2026). One hundred dollars put in at the low would be worth $120 today; at the high, $98. The current price $566.40 is above 170 of those 172 daily closes, so a purchase on a random day of that stretch would be in profit 99% of the time — fees aside.
A typical day moves BRKB by 1.7%: a $1,000 position swings about $17 a day.
Low of the stretch$471.77 · $100 → $120
High of the stretch$578.12 · $100 → $98
Share of profitable dates99% · 170/172
The same calculation for neighbouring instruments
Calculators for other instruments in the “company stock” category.