A security token is a digital token on a blockchain that represents ownership or rights in a real-world financial security such as equity in a company, a debt instrument, real estate ownership, or investment fund units. Security tokens combine the rights and regulatory protections of traditional securities with the efficiency and programmability of blockchain technology.
WHAT MAKES A TOKEN A SECURITY
The Howey Test (US legal standard) defines an investment contract as a security when it involves: an investment of money, in a common enterprise, with an expectation of profits, primarily from the efforts of others. Most security tokens clearly meet this standard they represent equity or profit rights in enterprises. This means security tokens are subject to securities regulations: registration requirements, accredited investor restrictions, disclosure obligations, and transfer restrictions. The regulatory contrast with utility tokens (which are not securities) is significant.
SECURITY TOKEN OFFERINGS
(STOS)STOs are the regulated alternative to ICOs raising capital through compliant token sales under securities law frameworks. Unlike ICO tokens (often utility or governance tokens with regulatory ambiguity), STO tokens represent explicitly defined securities rights and are sold only to qualified investors through registered broker-dealers or under regulatory exemptions (Reg D, Reg A+ in the US; similar frameworks in EU and Singapore).
THE ASSET TOKENISATION REVOLUTION
Security tokens extend beyond startup equity to tokenise real-world assets:
Real Estate: Fractional ownership of commercial properties. RealT tokenises US rental properties as ERC-20 security tokens, enabling global investors to buy fractions.
Bonds: Société Générale issued a digital bond on Ethereum. Singapore's central bank piloted government bond tokenisation.
Private Equity: Tokenised fund units enabling secondary market liquidity for typically illiquid private equity.
Commodities: Gold, oil, and carbon credits tokenised as security tokens.
KEY PLATFORMS
Polymath (now Polymesh): Blockchain specifically built for security tokens with compliance built into the protocol.
ZERO: SEC-regulated security token trading platform.
Securitize: Tokenisation platform for real-world assets used by major asset managers.