Cost Basis 與 Short Leash 使用情況與統計

Track the cost basis when using any options strategy and instantly see a complete profit analysis with theoretical option prices, break-evens, and more! Cost Basis offers a monthly and annual subscription. A monthly charge will be applied to your iTunes account. Subscriptions will automatically renew unless canceled within 24-hours before the end of the current period. You can cancel anytime with your iTunes account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/