Mo. Rev. Stat. § 362.200: Money not to be employed in trade or commerce.

No corporation organized under any law of this state, whether general or special, as a bank or trust company, or to carry on a banking business, shall, except as otherwise permitted by law, employ its moneys, directly or indirectly, in trade or commerce, by buying and selling ordinary goods, chattels, wares and merchandise, or by owning or operating industrial plants; provided, that it may sell all kinds of property which may come into its possession as collateral security for loans, or in the ordinary collection of debts.