Paper trading only: fills are estimated from free Yahoo Finance bars and will differ from real executions. Balance = starting capital + net P&L of closed trades (after charges) + mark-to-market of open positions. The projection resamples your own closed trades at random (bootstrap). It is not a forecast: it shows the range of outcomes if future trades resemble past ones, and it is unreliable on a small sample. News tags come from Google News headlines matched by keyword and can miss or misread a story. For education and tooling only, not financial advice. Most people who day trade lose money.