Investment Company Institute - News and tutorials covering mutual funds, exchange-traded funds (ETF), closed-end funds (CEF) and unit investment trusts (UIT).
MarketWatch Mutual Funds/ETFs - Mutual and exchange-traded funds section of MarketWatch, a Wall Street Journal publication. Offers news, tools and fund information.
Morningstar - Investment resource specialized in fund investing. Offers news, commentary, fund information, tutorial, tools and forums. Publishers of annual reports and various books on the subject, and creators of the Morningstar fund ratings.
TrustNet - Offers information on UK, Hong Kong and offshore investment funds and structured products, including performance data, news and tools.