Answer: ADRs.
Explanation:
ADRs or American Depository notes are a way for American investors to buy stock in foreign companies without the companies having to list themselves in any American exchange. It works by an American depository bank issuing the ADR which would have a varying number of shares in a foreign company with the minimum being 1 share. Investors can then buy these ADRs. These ADRs also trade on stock exchanges as well.