Current assets are short-term economic resources that are expected to be converted into cash within one year. Current assets include cash and cash equivalents, accounts receivable, stock inventory, marketable securities, pre-paid liabilities, and other liquid assets.
Fixed assets are long-term resources, such as plants, equipment, and buildings. An adjustment for the aging of fixed assets is made based on periodic charges called depreciation, which may or may not reflect the loss of earning powers for a fixed asset.
Financial assets represent investments in the assets and securities of other institutions. Financial assets include stocks, sovereign and corporate bonds, preferred equity, and other hybrid securities. Financial assets are valued depending on how the investment is categorized and the motive behind it.
Intangible assets are economic resources that have no physical presence. Intangible assets provide an economic benefit to somebody, but you cannot physically touch them. These are an important class of assets that include things like intellectual property (e.g., patents or trademarks), contractual obligations, royalties, and goodwill. Brand equity and reputation are also examples of non-physical assets that can be quite valuable.