What is a security token offering?

A security token offering is a way to offer securities in a tokenised format. The technology may change how ownership is recorded or transferred; it does not make the investment risk-free.

Possible rights include an interest in a company, a debt repayment or a share of investment income. The offering documents and legal structure determine those rights. A token name or a blockchain transaction alone does not explain what you own.

Sources: FCA: security-token categories · SEC staff: tokenised securities. Checked October 22, 2026.

What does the token actually represent?

Some tokens are issued by the company or fund itself. Others are created by a third party and may represent an indirect interest, a claim against a custodian, or exposure to an asset’s price.

These arrangements can give holders different rights. A token linked to a company’s shares does not necessarily make its holder a shareholder of that company. Check who owes you the obligation and what happens if that party fails.

Sources: SEC staff: issuer-sponsored and third-party models · SEC commissioner: tokenisation and counterparty risk. Checked October 22, 2026.

STO, ICO and Bitcoin: different questions

The difference is not simply that an STO has “real assets” while every ICO has only a future promise. Look at the substance of the arrangement and the rules that apply.

For the Bitcoin units, see can you buy half a Bitcoin? A fraction of BTC and a fractional interest in a security are different things.

Sources: SEC: the underlying asset and legal requirements · FCA: types of token. Checked October 22, 2026.

Can assets be split into smaller interests?

Tokenisation can represent smaller interests in an asset or fund. For example, the FCA describes fund tokenisation as recording a fund share or unit as a digital token.

That does not automatically give every investor access, a low minimum or an easy exit. Permissioned systems, eligibility rules and transfer restrictions may still apply. Digital recordkeeping can support administrative improvements, but commercial, legal and technical obstacles remain.

Sources: FCA: fund tokenisation. Checked October 22, 2026.

Questions to ask before considering an STO

• The rights: What income, repayment, voting or ownership claim is documented?
• The responsible parties: Who is the issuer, intermediary and custodian?
• The exit: Where can you sell, to whom, and under what restrictions?
• The costs: What issuing, trading, custody, redemption and network charges apply?
• The failure scenario: What claim remains if the issuer, platform or custodian becomes insolvent?
• Your location: Which local rules and investor-eligibility requirements apply to the actual offering?

Use these questions to read the documents, rather than treating a marketing term as an answer. A transferable token is not a guarantee that there will be a willing buyer.

Regulation depends on the product and your location

Putting a security on a blockchain does not remove securities obligations. For example, US SEC staff describe registration or an available exemption as relevant regardless of a security’s format. The UK FCA describes security tokens by the investment rights they provide.

These are jurisdiction-specific examples, rather than a worldwide permission to issue or buy a token. Check the rules for your country and the parties serving you. This page explains concepts; it does not assess or recommend a particular offering.

Sources: SEC staff statement, January 2026 · FCA cryptoasset guidance. Checked October 22, 2026.