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+1.8%$100 → $102
a month ago-0.5%$100 → $99
since our history starts, July 30, 2026-0.5%$100 → $99
Dates within the last week use the minute candle — accurate to the minute of purchase.
A year of buying BRKB
Over the last 30 days BRKB closed between $497.37 (August 21, 2026) and $530.17 (August 9, 2026). One hundred dollars put in at the low would be worth $102 today; at the high, $95. The current price $506.23 is above 14 of those 30 daily closes, so a purchase on a random day of that stretch would be in profit 47% of the time — fees aside.
A typical day moves BRKB by 1.2%: a $1,000 position swings about $12 a day.
Low of the stretch$497.37 · $100 → $102
High of the stretch$530.17 · $100 → $95
Share of profitable dates47% · 14/30
The same calculation for neighbouring instruments
Calculators for other instruments in the “company stock” category.