The total amount of coin supplied on the market of HLM coin is how much
HLM is a fork of SPR (Spreadcoin). When it starts on September, it will have the same amount of supply as SPR (aroung 8.6M). As it is In the future, it will grow up to around 21M.
A part of this total supply will be locked into MasterNodes, so the circulating supply will be much less. How much will be on the market, that is a very good question, nobody really knows.
HLM isn't a fork of Spreadcoin. HLM Blockchain will be based on Dash, though not forked from it. This is an airdrop where owning Spreadcoin allows you to claim HLM. So the total planned supply will be 20 million but the initial public circulation will depend on how much SPR is claimed. Bittrex holders may automatically get HLM but that's not concrete yet.
@vanwinkle6y Public and will most likely be announced in the next week. coins101 told me next week and that was last Friday.