QuantGrid: Replicate your trades across every broker account you use

Hey Product Hunt 👋 QuantGrid started because we kept managing the same trade across multiple broker accounts by hand - placing it once, then racing to place it again (correctly sized) on every other account before the price moved. One missed leg and the accounts drift out of sync. QuantGrid watches a parent account's orders and mirrors them to any number of linked accounts, in milliseconds, with a per-account quantity multiplier. It works across 11 Indian brokers - Zerodha, Angel One, FYERS, Upstox, Groww, Dhan, Kotak Neo, Motilal Oswal, Nuvama, ICICI Direct and Tradejini - and the parent and its followers don't have to be on the same broker: symbols, product types and lot sizes get translated automatically. A few things we cared about getting right: - Nothing is missed silently - continuous order-book polling is the source of record, the WebSocket is just there to shave latency - Every broker account gets its own dedicated static IP, since most of these APIs require a whitelisted address and that's normally the most annoying part of setup - Every replicated order is protected against duplicates and shows up in a full, exportable audit trail One thing worth being upfront about: QuantGrid isn't registered with SEBI and doesn't give trading advice, tips or recommendations of any kind. It's infrastructure - it only ever executes the replication rules you configure, on accounts you connect. Would love feedback, especially from anyone running accounts across more than one broker.