Investment Securities

See: Investment Product.

More or less anything you'd invest in that is meaningful, or has scale, will be an investment security.

Stocks. Bonds. Derivatives therein. The security itself is backed by a given issuer of a bond's ability to repay...or in the case of a share, it represents a percentage ownership of the thing being bought into.

Is a piece of rare art a security? Not really. It's the thing itself that represents all the value in it, so it's just...valuable art. A call option to buy that Mona Lisa for $50 mil any time in the next year? That's an investment security.