Fidelity Investments launched three multifactor exchange-traded funds on Thursday, boosting the company’s bet on factor investing as it expands its ETF lineup.

All three products follow indexes developed in-house that track companies that Fidelity’s research analysts believe have attractive valuations, high-quality profiles, positive momentum signals and lower volatility than broader market indexes.

The Fidelity Small-Mid Factor ETF (FSMD) comprises small- and mid-cap U.S. companies, and charges a net expense ratio of 0.29 percent.

Its top holdings include Garmin Ltd., a maker of GPS navigation and wearable tech products; Markettaxess Holdings Inc., a fixed-income electronic trading platform; and FactSet Research Systems Inc., a financial data and software company.

The Fidelity Targeted International Factor ETF (FDEV) has a net expense ratio of 0.39 percent and invests in mid- and large-cap developed international companies.

Japan (19 percent), the U.K. (13 percent) and the U.S. (8 percent) are the largest country weights.

The Fidelity Targeted Emerging Markets Factor ETF (FDEM) comprises mid- and large-cap companies in the emerging markets and carries a net expense ratio of 0.45 percent. As of press time no information was available on the portfolio’s country and regional exposure.

Fidelity entered the ETF space with one product in 2003, and it began adding to that with a series of launches since 2014. It now has 28 ETFs with combined assets of $12.7 billion, according to Thirteen of these funds are factor-based.

Fidelity’s entire ETF lineup can be bought commission-free on Fidelity’s online brokerage platform. Earlier this month, the company announced it was nearly doubling the number of funds that can be bought commission-free on its platform to more than 500 products from various asset managers. That expansion took effect today.