Laurie Sepulveda is a MarketWatch Guides team senior writer who specializes in writing about insurance, investing, personal loans, home equity loans, mortgages and banking. She lives in North Carolina ...

Fidelity is one of the world's largest and best-known providers of mutual funds. The firm offers a dizzying 200 products that ...

But if you're starting a portfolio or need to overhaul your core, Fidelity's index funds are built for that job, too. Your "portfolio core" simply means the basic assets and strat ...