Yes. Shares, ETFs, funds, bonds, options, crypto, cash accounts, property and assets you value yourself all belong to the same portfolio and add up to one balance.
Money spread across several brokers does not force a choice either: keep a portfolio per account and read them together whenever you want the whole picture.
Nothing is flattened to make that work. A bond still reports its duration, an option still reports its theta, and a property still reports its equity after the mortgage.
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