When I started prop trading, I struggled with the shift from longer-term swing ideas, equities, and options into much shorter day-trading windows. Some prop firms fit me better than others. I made a lot of money with some, not so much with others. I have taken payouts from more than 10 firms, been banned from firms, lost money, and wasted time on others. Some exposed habits and rule conflicts I did not see clearly until after the fact.
The current portfolio tracking tools did not fit prop trading. I was tracking eval costs, account fees, payouts, tools, blown accounts, and net results across different providers in spreadsheets. Then came pivot tables, tax-time cleanup, and the same question over and over: am I actually making money here, and which parts of the process are helping?
I shared those spreadsheets with a few friends, and the shape of PNL Playbook became obvious. Prop traders do not always stay with one firm, and the real business picture lives across accounts, rules, payouts, expenses, and behavior. I wanted one place to see that clearly.