# Barriers

- [Up-and-In Call Option](/docs/ithaca-app/trading/stories/barriers/up-and-in-call-option.md)
- [Up-and-Out Call Option](/docs/ithaca-app/trading/stories/barriers/up-and-out-call-option.md)
- [Down-and-In Put Option](/docs/ithaca-app/trading/stories/barriers/down-and-in-put-option.md)
- [Down-and-Out Put Option](/docs/ithaca-app/trading/stories/barriers/down-and-out-put-option.md)