An alternative trading system (ATS) is a regulated venue for trading securities outside a traditional exchange - and in the US, it is the usual route to a compliant secondary market for security tokens. Because your tokens are securities, you cannot simply list them on a crypto exchange; trading has to happen somewhere licensed to handle securities. This guide explains what an ATS is, why it matters, and what listing on one asks of you as an issuer.

What an ATS is

An ATS is a trading venue registered with the SEC and operated by a broker-dealer, permitted to match buyers and sellers of securities. It is lighter than a national exchange but still regulated, which is what makes it suitable for security tokens.

For tokenized securities, an ATS is where compliant secondary trading realistically happens. It enforces that only eligible, verified investors trade - the same eligibility your token already requires.

Why security tokens need one

A security token cannot trade on an ordinary crypto exchange, because that would be trading securities on an unlicensed venue. The resale restrictions baked into your token also mean any trade must stay within approved holders.

An ATS squares these: it is licensed for securities and integrates with the token's whitelist, so trades clear both the market rules and your compliance rules. Without such a venue, "secondary liquidity" has nowhere compliant to occur.

What listing requires

Listing is not automatic. The ATS will conduct due diligence on your offering, your legal structure, and your token's compliance before admitting it, and it will have its own onboarding for investors who trade there.

Expect to meet the venue's standards, integrate your token with its systems, and pay listing and transaction fees. Factor this into your liquidity plan early - it is a process with cost and lead time, not a switch you flip at exit.

Listing is necessary, not sufficient

An ATS listing creates the possibility of trading; it does not create demand. A thinly traded listing still leaves investors effectively illiquid, so a venue is one input to liquidity, not a guarantee of it.

Pair the listing with honest expectations and real buyer interest. Note too that because an ATS is run by a broker-dealer, your structure may intersect broker-dealer questions - see the broker-dealer question.

Where to go next

• Next: tokenization vs the alternatives (for issuers).
• Related: the broker-dealer question.
• Glossary: alternative trading system.

Sources: U.S. SEC (sec.gov), as of 2026.