Baskets
Registered for trading, issuance isn't paused, its books are reconciled, no asset is excluded, and every asset's pool has liquidity, so a buy or sell in one step normally works. A pool that holds only one side can still refuse a buy. You can redeem shares of any basket for its assets.Baskets with no shares yet, so nothing backs them. They are left out of the list unless you include them; a search always finds them.