What does the SML in our bar owner's name mean?

Hi fellow members at the bar. I just joined today.

Prior to joining here, I was a member of 3 crypto focussed BBS communities 

One of the communities was a small (S)  sized one. Another was a middle (M) sized one. The third was a large (L)  one.

I wonder what the SML in our bar owner, @CryptoSML, name means.

Does it means that he holds various cryptocurrencies including Small, Medium, and Large cryptocurrencies?

Just curious.

Boss, would you like to explain