What REALLY Happens When You Buy a Stock?

Video Description

Every time you tap “Buy” on a stock app, you're triggering a real-time pipeline of backend systems: APIs, message queues, matching engines, and sometimes—algorithms competing in microseconds. In this video, we break down how stock brokers and HFT work — explained with real-world system design. ✅ How stock brokers ingest and route your orders ✅ What the “best execution” rule really means ✅ How matching engines maintain order books and execute trades ✅ How High-Frequency Trading (HFT) firms use ultra-low latency systems to dominate the market Whether you're a curious investor or a backend engineer, this explainer connects real-world trading with system design. #StockTrading #HighFrequencyTrading #SystemDesign #StockBrokerArchitecture #FinTech https://www.linkedin.com/in/bytemonk/ 👍 Like, 🔔 Subscribe, and explore more tech explained simply! Timestamps: 0:00 – Hook: What Happens When You Tap "Buy" 0:40 – How a Stock Broker Processes Your Order 1:45 – What is a Matching Engine? Order Books & Trade Execution 2:58 – How Matching Engines Scale with In-Memory Architectures 5:33 – High-Frequency Trading (HFT) 6:33 – Outro: What’s Coming in the Next Deep Dive https://www.youtube.com/playlist?list=PLJq-63ZRPdBt423WbyAD1YZO0Ljo1pzvY https://www.youtube.com/playlist?list=PLJq-63ZRPdBssWTtcUlbngD_O5HaxXu6k https://www.youtube.com/playlist?list=PLJq-63ZRPdBu38EjXRXzyPat3sYMHbIWU https://www.youtube.com/playlist?list=PLJq-63ZRPdBuo5zjv9bPNLIks4tfd0Pui https://www.youtube.com/playlist?list=PLJq-63ZRPdBsPWE24vdpmgeRFMRQyjvvj https://www.youtube.com/playlist?list=PLJq-63ZRPdBslxJd-ZT12BNBDqGZgFo58 AWS Certification: AWS Certified Cloud Practioner: https://youtu.be/wF1pldkQrOY AWS Certified Solution Architect Associate: https://youtu.be/GzomXNLFgkk AWS Certified Solution Architect Professional: https://youtu.be/KFZrBxSA9tI