BrainStock allocates a public $10,000 across its own Bull Board calls and holds them. This is the live book — every open position marked to its real current price, updating while you watch. No do-overs, no hiding.
The book equal-weights each day's Bull Board calls, no leverage. Open positions are marked to the latest available close; "live book value" carries realized equity forward and applies the open book's current mark. Educational — not financial advice.