Your trade desk. In your pocket.
bigMobile is a real trading app — not a watchlist with a buy button. Real-time Level 2, advanced charting, full account management, and Cobra’s locate stack on iOS and Android.
Mobile, but make it pro.
Most broker apps assume mobile means casual. bigMobile assumes you might be running real positions from an airport gate, and builds accordingly. Real-time streaming Level 2. Working orders. Multi-leg options. Locates. Scanners. The kind of app that earns its spot on your home screen.
Native iOS and Android apps
Full-featured native apps for iPhone, iPad, and Android phones and tablets. Optimized for each platform, not a stretched browser shell.
Real-time Level 2 market data
Stream live Level 2 (NASDAQ TotalView) and OTC Markets depth straight to your device. Same data feed as bigPRO and bigWeb.
Advanced charting
Multi-time-frame charting, technical studies, and drawing tools designed for a touch screen. Pinch, zoom, draw a trend line, drop an order.
Order management
Place, modify, and cancel orders with multi-stop and advanced order types. Manage open positions, working orders, and account balances in real time.
Locates on the go
Submit short locate requests, view active locates, and pull pre-borrows directly from the app. Same inventory as the desktop and web platforms.
Stocks and options
Trade stocks and listed options, including multi-leg options strategies, from your phone.
Real-time alerts & quotes
Streaming Level 1 and Level 2 quotes, push alerts, and real-time news on the symbols you watch.
Who bigMobile is for.
Active traders who travel and need a real app, not a toy
Anyone managing positions while away from their desk
Swing traders who don’t sit in front of monitors all session
Pros running bigPRO at the desk and bigMobile everywhere else
Platform Fees
$30/mo
*Waived when bundled with bigPRO
FAQ
Which devices does bigMobile run on?
iPhone, iPad, and iOS-running Apple devices through the iOS app. Android phones and tablets through the Android app. Both apps are full-featured — neither is a watered-down version.
How do I waive the platform fee?
The $30 platform fee is waived when bundled with bigPRO.
Can I trade options on bigMobile?
Yes. bigMobile supports stocks and listed options, including multi-leg options strategies.
Does bigMobile sync with bigPRO and bigWeb?
Yes. One account powers all three platforms. Positions, orders, balances, and locates stay in sync in real time.
Is mobile fast enough for active trading?
For order entry, position management, and risk control — yes. For high-frequency hotkey scalping, you’ll still want bigPRO at a real workstation. Most pros use bigMobile as a companion, not a replacement.