The Simple Trade Copier V3 is a NinjaTrader 8 indicator that replicates trades from a single master account to up to 20 follower accounts in real-time. It lives in the ChartTrader panel as a pair of buttons (COPY OFF/COPYING and RESET) with a compact status line showing the master, follower count, and copy mode. Execution-based copying ensures follower orders only fire after confirmed fills on the master, and everything copies as market orders for immediate execution. Key Improvements in V3

New RESET / Position Sync button. This is the biggest functional addition. The V2 copier only forwarded new executions — if a follower got out of sync (missed fill, disconnect, manual intervention, late enable), there was no way to realign it short of manually flattening. V3's RESET button disables copying, clears tracking state, then walks every relevant instrument and compares each follower's position to the master's. It will open, close, reverse, or resize follower positions as needed to match. The button turns orange and displays "SYNCING" during the operation, then restores itself via a DispatcherTimer.

Overall, V3 is a solid upgrade: the RESET button alone addresses the single biggest real-world pain point with V2 (drift recovery), and the queue-based processing makes it meaningfully more robust under fast-market conditions.​