> For the complete documentation index, see [llms.txt](https://docs.pacman.finance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pacman.finance/functionality/opac-strike.md).
# oPAC Strike
**oPAC** is a call option token for **PAC** that lets its holder purchase **PAC** at a discount to the market price. Unlike regular options, oPAC does not expire.
Here is an example of converting oPAC to PAC:
```
PAC Price: $0.78
ETH Price: $1600
Strike Price: $0.39
Discount: 30% + 20%
1 oPAC + 0.00024375 ETH = 1 PAC
After selling PAC, the user can get $0.78
Treasury Income: 1 oPAC + 0.00024375 ETH
User earns：$0.39
```
For more details read [oPAC](/tokenomics/opac.md).
---
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