You can invest in blue-chip stocks directly or indirectly. Just like any other stock investment, you can purchase blue-chip stocks directly using your brokerage account. You can also consider getting exposure to blue-chip stocks by investing in mutual funds or exchange-traded funds (ETFs) that specifically invest in blue-chip stocks. The 30 stocks in the Dow Jones Industrial Average (DJIA) are considered synonymous with blue chips, so you could purchase mutual funds or ETFs that track the DJIA.