I don't know what you mean. You want a list? I don't have one, but I'm sure you can find one. If you mean a tradeable index so you can invest in market makers.

I don't know what you mean. You want a list? I don't have one, but I'm sure you can find one. If you mean a tradeable index so you can invest in market makers... I doubt it. Their entire business is making money for themselves, and likely don't need or want public shareholders that they have to report to.