as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
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what's the best online tool that can track my entire portfolio including gains/losses?
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mint.com does this quite well. the graph views of your budgets, investments, debts, and other aspects of your financial life can be shown in gestalt, or on a per-account basis (at least, it does for me). see the investment "how it works" page for more information.  "find out whether you're beating the market–or it's beating you. compare your portfolio to market benchmarks, and instantly see your asset allocation across all your investment accounts: 401k, mutual funds, brokerage accounts, even iras."
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