A rule known as T+1 will go into effect on Tuesday, changing the way stocks, bonds, ETFs, and more are traded.

Buying or selling a stock is about to get a lot snappier starting next Tuesday. But that doesn’t mean it’ll get smoother – and some financial firms are preparing to handle any possible bumpiness.

U.S. trading moves to a shorter settlement on Tuesday, which regulators hope will reduce risk and improve efficiency in the world's largest markets, but is expected to temporarily increase transaction failure for investors.