The type of account being used to hold an investment doesn't change that stock's overall performance. But it can affect your taxes. Individual retirement accounts (IRAs) defer taxes on dividends and capital gains, and in the case of Roth IRAs, withdrawals are typically tax-free. If you're looking at all your investments inside and outside of retirement accounts holistically, these factors should impact which names you hold in an IRA and which ones you don't.
Source Fool.com