If a company or ETF (exchange-traded fund) isn't listed it's usually because it doesn't meet DriveWealth's listing criteria).
The general rules that DriveWealth use to assess what shares to offer are:
The company or ETF is listed on the NYSE or Nasdaq
For companies, the market capitalisation should be greater than $300 million USD, with an average value of $1 million USD and 100,000 shares traded per day
For ETFs, the net assets should be greater than $300 million USD
Leveraged funds aren’t offered by default and requests to add them will be reviewed on a case-by-case basis