You can view aggregated Theta and Total SPX (beta-weighted) Delta in your portfolio in IBKR Mobile.
To view these metrics in IBKR Mobile:
From the Portfolio dashboard, tap the "Details" (down) arrow to expand the panel and view all available metrics including SPX Delta and Theta.
To add/remove metrics:
- In iOS use the pencil icon to add/remove metrics.
- In Android, tap the three dots in the top right corner and then tap Manage Portfolio Metrics.
Theta measures time decay for your options and futures options positions. A positive theta indicates that, all else remaining the same, the account value may grow over time. It may also indicate greater risk to your portfolio when the underlying price swings and raises implied volatility (from being short gamma). The opposite is true for a negative Theta.
The beta-weighted SPX Delta can help you understand your exposure at a glance (relative to the SPX index). This may be helpful in deciding whether you want to hedge your portfolio by selling SPX Delta exposure or increase your portfolio's exposure by buying it.