Re : HL Question13 Jan 2021 12:47
Gimlet, HL act as brokers through 30 MM's but are NOT MM's themselves
When you cannot get a quote through HL, or any other non market making trading platform, for an AIM share, this is because AIM shares typically have just a few MM's ( whereas BP for example will have 20 odd ) and therefore it's easier for these shares to become illiquid.
Hope this helps
LOR