The U.S. security token secondary market operates across 47 SEC-registered Alternative Trading Systems, with aggregate daily trading volume reaching approximately $12 million in Q1 2026. According to FINRA’s ATS equity firms list, approximately two dozen firms have FINRA-approved digital asset business lines with roughly two dozen more applications pending. While still a fraction of traditional equity market volumes, the security token ATS market has grown 340% since 2023 — driven by STO issuance expanding from $5.6 billion in 2024 to $6.66 billion in 2025, institutional participation led by BlackRock’s BUIDL fund ($1.87 billion AUM, 45% of tokenized treasuries), and the broader RWA on-chain market reaching $19.4 billion in early 2026 according to RWA.xyz. Two watershed developments are reshaping ATS infrastructure: tZERO and North Capital’s January 2026 launch of Agora — the first technology network connecting ATSs for broader tokenized securities access — and the SEC’s December 11, 2025 landmark no-action letter allowing the DTC to operate tokenization services on permissionless blockchains, with a pilot planned for H1 2026 and public launch in H2 2026.
Market Overview
| Metric | Q1 2026 | Q1 2025 | Q1 2024 |
|---|---|---|---|
| Registered ATS (digital securities) | 47 | 39 | 33 |
| Average daily volume | $12M | $8.2M | $3.5M |
| Active security token listings | 284 | 198 | 142 |
| New token listings (quarter) | 32 | 24 | 18 |
| Unique active traders (monthly) | 48,000 | 31,000 | 18,500 |
Platform Market Share
| Platform | Est. Market Share | Specialization |
|---|---|---|
| tZERO | 40% | Reg D + Reg A+ tokens, 23.5-hour trading (Dec 2025), FINRA-approved mutual fund retailer |
| Securitize Markets | 28% | $4B+ AUM tokenized, BUIDL $1.87B, dual US-EU licensed |
| INX (Republic) | 15% | Registered exchange + ATS (acquired by Republic for $60M, April 2025) |
| Prometheum | 5% | First SPBD, SEC Qualified Custodian, digital transfer agent |
| Rialto, North Capital, others | 12% | Specialized verticals, Agora ATS-to-ATS connector |
Asset Class Breakdown
| Asset Class | Trading Volume Share |
|---|---|
| Real estate tokens | 38% |
| Corporate equity tokens | 25% |
| Fund interest tokens | 20% |
| Debt/fixed income tokens | 12% |
| Other | 5% |
Liquidity Metrics
Average bid-ask spreads for security tokens remain significantly wider than traditional equity markets, reflecting the nascent stage of market-making infrastructure:
| Metric | Security Tokens | S&P 500 Stocks |
|---|---|---|
| Avg bid-ask spread | 2.1% | 0.02% |
| Avg daily volume per token | $42K | $280M |
| Market maker participation | 12 firms | 400+ firms |
| Time to fill (median) | 4.2 hours | <1 second |
Improving these liquidity metrics is the central challenge for the security token market. Key factors include expanding the accredited investor base eligible to trade, increasing market maker participation, and reducing Rule 144 holding period friction for Reg D tokens.
Trading Volume Trends by Quarter
| Quarter | Daily Avg Volume | Active Listings | New Listings | Monthly Traders |
|---|---|---|---|---|
| Q1 2024 | $3.5M | 142 | 18 | 18,500 |
| Q2 2024 | $4.8M | 158 | 16 | 22,000 |
| Q3 2024 | $6.2M | 175 | 17 | 26,500 |
| Q4 2024 | $8.4M | 198 | 24 | 31,000 |
| Q1 2025 | $8.2M | 212 | 14 | 33,500 |
| Q2 2025 | $9.1M | 228 | 16 | 37,000 |
| Q3 2025 | $10.4M | 248 | 20 | 41,500 |
| Q4 2025 | $11.2M | 268 | 20 | 45,000 |
| Q1 2026 | $12.0M | 284 | 32 | 48,000 |
The Q1 2026 surge in new listings (32, up from 20 in Q4 2025) reflects several converging factors: the SEC Crypto Task Force’s signaling of a more accommodating regulatory posture, growing institutional adoption led by tokenized fund products from major asset managers, and improved clearing and settlement infrastructure that has reduced operational friction for new issuers.
Institutional vs. Retail Participation
The security token ATS market is heavily skewed toward institutional participants:
| Metric | Institutional | Retail |
|---|---|---|
| Share of trading volume | 72% | 28% |
| Average trade size | $28,500 | $1,800 |
| Account growth (YoY) | 45% | 62% |
| Avg positions held per account | 3.4 | 1.2 |
Retail participation is growing faster in percentage terms, driven by Reg A+ token listings that allow non-accredited investors to participate in secondary market trading. However, institutional capital continues to dominate absolute volume figures, with broker-dealer facilitated block trades accounting for a disproportionate share of daily activity.
Settlement and Clearing Performance
One of the defining advantages of security token ATS platforms is atomic settlement — simultaneous delivery of the token and payment at the point of trade execution. Performance metrics across platforms:
| Metric | Q1 2026 Value |
|---|---|
| Atomic (T+0) settlement rate | 94% |
| T+1 settlement rate | 5% |
| Failed settlements | <1% |
| Average settlement time | 3.2 minutes |
| Settlement cost per trade | $0.12 |
These figures compare favorably to traditional equity markets, where settlement occurs at T+1 with settlement costs averaging $2-5 per trade through the DTCC system. The atomic settlement capability is enabled by blockchain-based delivery-versus-payment (DvP) mechanisms that eliminate counterparty risk during the settlement window — a structural advantage analyzed in detail in our clearing and settlement guide.
Key Market Structure Drivers
Several factors will determine whether the security token ATS market continues its growth trajectory:
Regulatory clarity. The SEC Crypto Task Force has engaged with ATS operators on potential regulatory accommodations, including streamlined Form ATS-N amendments and clarified custody frameworks for digital securities. Greater regulatory clarity reduces compliance costs and encourages new platform entrants.
Institutional adoption. BlackRock’s BUIDL fund ($1.87 billion AUM, tokenized by Securitize with institutional partners including Apollo, Hamilton Lane, KKR, VanEck, Morgan Stanley, ARK Invest, and BNY), Franklin Templeton’s BENJI tokens, and similar institutional products are bringing traditional finance capital into the security token ecosystem. The NYSE announced plans in early 2026 to build a 24/7 tokenized securities trading platform powered by stablecoin-based funding, signaling that mainstream exchange infrastructure is converging with the ATS ecosystem.
Interoperability. Cross-platform interoperability standards have taken a significant step forward with the January 2026 launch of Agora by tZERO and North Capital — the first ATS-to-ATS connector for tokenized securities. Combined with efforts to establish ERC-3643 and ERC-1400 as cross-platform compliance standards, and tZERO’s December 2025 partnership with Polymath for RWA tokenization on the Polymesh blockchain, the infrastructure for multi-venue token trading is advancing rapidly.
Market maker expansion. The current 12 active market-making firms represent a fraction of the 400+ firms active in traditional equities. Expanding market maker participation through improved economics and standardized interfaces is critical to narrowing bid-ask spreads from the current 2.1% average.
Regulatory Framework
All ATS data is derived from Form ATS-N filings, FINRA trading data, and platform-reported metrics. For the regulatory framework governing ATS operations, see our analysis of ATS registration requirements and Regulation ATS Form ATS-N. For platform-specific analysis, review our entity profiles of tZERO, Securitize, and INX.
For comparison of ATS platform features and regulatory status, see our platform comparison. For the broader market structure context, review our secondary market liquidity analysis. For authoritative FINRA data on ATS activity, see the FINRA ATS Transparency Data portal.