e.g. A custom tailored interest-rate swap[1] to hedge very specific circumstances between two parties. Or if you like cool names, maybe a gigantic Bermudan swap

e.g. A custom tailored interest-rate swap[1] to hedge very specific circumstances between two parties. Or if you like cool names, maybe a gigantic Bermudan swaption[2]. Or maybe two traders want to take opposite ends of bizarre 10 leg option with unlisted strike prices... [1]: https://en.wikipedia.org/wiki/Interest_rate_swap#Extended_description https://en.wikipedia.org/wiki/Interest_rate_swap#Extended_de... [2]: https://en.wikipedia.org/wiki/Swaption https://en.wikipedia.org/wiki/Swaption