📊 웹불의 레벨2 데이터, 실제로 쓸만한가요?

I've used Webull's Level 2 (Nasdaq TotalView) for a while now. NBBO is basically your standard Level 1 data. It shows you the single best bid and ask price across all 16 exchanges. It's what most people mean when they talk about the "current price."

Level 2 is different because it shows the depth of the book. You don't just see the best price; you see the 50 best bids and asks and the volume behind them. I find it most useful for spotting "walls" of big orders that might act as support or resistance. Without it, you're only seeing the tip of the iceberg. If you're day trading, the extra $2.99 a month is worth it for the clarity.

Webull's Level 2 is fine for retail but it's not true NBBO—there's latency and it doesn't aggregate all exchanges in real-time. If you're scalping sub-second moves it matters; otherwise for swing/intraday structure plays, the difference is negligible.