The memory of your decisions. And their numerical truth.
Every investor tells themselves stories: that they saw the rise coming, that this losing position was a reasonable bet. BOOK exists for one reason: to replace memory, which flatters, with the ledger, which decides.
The journal of your decisions
Included in every plan, including Free
Every order is recorded and qualified: open, add, trim or close; when, at what price, with what fees. For every sale, the realised P&L, calculated at average cost. Orders are grouped by month, with their totals, over the period you choose.
Great merchants kept a ledger before they kept a fortune. Keep yours.
Real performance — TWR
From the Early Pro plan
Your broker shows a performance that mixes your deposits with your choices. The terminal calculates TWR (time-weighted return), the measure professionals use precisely because it separates the quality of decisions from the effect of contributions. It is calculated over the order history available to the terminal, and annualised once that history covers at least a year. It is your real performance: sometimes it pleases, sometimes it corrects; either way, it is true.
Beyond ratios, discipline
Ratios measure your situation. BOOK measures what your decisions produced. Together they close the loop: what you have, what you decide, what it yields.