Fidelity Investments has completed its previously announced plans to expand to 500-plus products its lineup of exchange-traded funds that can be bought commission-free on its brokerage platform, the company announced Monday.

The move to broaden that roster, which was first announced in February, adds nearly 150 ETFs from 11 ETF sponsors to Fidelity’s existing lineup of commission-free ETFs from Fidelity and iShares that are available to its retail and institutional customers. The roster of newcomer providers comprise American Century, First Trust, Franklin Templeton, Goldman Sachs Asset Management, Invesco, Janus Henderson, John Hancock Investments, J.P. Morgan Asset Management, Legg Mason Global Asset Management, Pimco and State Street Global Advisors SPDR ETFs.

According to Fidelity, the average expense ratio among ETFs on its commission-free platform is 0.36 percent and they represent 69 Morningstar categories.

Fidelity and Charles Schwab’s ETF OneSource platform both offer online commission-free trades on more than 500 ETFs. Vanguard’s brokerage platform offers commission-free trades on roughly 1,800 ETFs.