A pro-grade platform that lives in your browser.
bigWeb gives you direct-access routing, real-time Level 2, and Cobra’s full locate stack — without installing a thing. Trade from any computer, anywhere, in any modern browser.
No download. No drama. No compromise.
bigWeb is a serious browser-based trading platform. Whether you trade from an office desktop, a laptop on the road, or a borrowed machine at your in-laws’ kitchen table, bigWeb logs in clean and behaves the same everywhere. And it’s free.
Runs in any modern browser
Chrome, Safari, Edge, Firefox — Windows, macOS, ChromeOS, Linux. If it loads a website, it runs bigWeb. No installer, no admin rights, no IT ticket.
Multi-monitor support
Pop windows out of the browser and stretch them across monitors. You don’t lose screen real estate just because you’re on the web.
Real-time market data
Basic Market Data (Level 1) and Advanced Market Data Package + OTC/Pink Sheets (Level 1 and 2) are available. View our fee schedule for a full breakdown of market data fees.
Advanced charting
Charting on bigWeb is powered by Tradingview, a robust charting platform preferred by thousands of traders.
Locates & short selling
Pull short locates, pre-borrows, and direct non-easy-to-borrow locates straight from the platform. Same inventory as bigPRO.
Real-time scanner & news
Find movers and stay on top of catalysts without alt-tabbing between five tabs.
Stocks and options
Trade stocks and listed options from a single, unified interface.
Who bigWeb is for.
Active traders who don’t want to be locked to one machine
Mac users who’d rather not run Boot Camp or buy a dedicated Windows machine
Travelers, remote workers, and anyone who trades from multiple locations
Newer traders who want pro-grade tools without a software install
Pros who use bigPRO at the desk and want a clean fallback in the browser
Platform Fees
Free
FAQ
Is bigWeb really free?
Yes. There’s no platform fee for bigWeb. You only pay for optional market data add-ons and any trades you place. Stock trades priced at $1 or higher are commission-free from 7:00 AM ET to 8:00 PM ET.
How does bigWeb compare to bigPRO?
bigWeb covers most of what active traders need: direct-access routing, Level 2, locates, charting, and scanning. bigPRO adds full hotkey support, unlimited custom windows, and the deepest layout flexibility — built for traders running multi-monitor setups all day.
Does bigWeb work on a Mac?
Yes. bigWeb runs natively in Safari and Chrome on macOS — no Boot Camp, no virtualization, no Windows machine required. It’s the cleanest Mac-native path into a Big Trades platform.
Can I use bigWeb and the mobile app together?
Yes. Your account is shared across bigWeb, bigPRO, and bigMobile. Positions and orders sync in real time.
What happens if my browser crashes mid-trade?
Your account state lives on our servers, not in the browser tab. Open orders, positions, and working tickets persist. Log back in and pick up where you left off.