Form ATS-N alternative trading system disclosures
Form ATS-N disclosures of dark pools and other NMS stock alternative trading systems: order types, fees, segmentation and operator conflicts.
curl -H "Authorization: Bearer $SECFEED_KEY" \ "https://secfeedapi.com/v1/filings?query=formType:%22ATS-N/UA%22&size=2"
import os, requests
r = requests.get(
"https://secfeedapi.com/v1/filings",
params={'query': 'formType:"ATS-N/UA"', 'size': '2'},
headers={"Authorization": f"Bearer {os.environ['SECFEED_KEY']}"},
)
print(r.json())What is ATS-N?
Alternative trading systems that trade NMS stocks, including dark pools, must publicly disclose how they work on Form ATS-N under Rule 304 of Regulation ATS, adopted in 2018. The form describes the broker-dealer operator's other activities, who can trade, the order types, how orders interact and how fees are charged.
Amendments are frequent and typed by purpose, so the filing history shows how each venue changes its rules over time.
NMS stock ATSs and their broker-dealer operators.
Before operating. Material amendments (ATS-N/MA) are filed at least 30 days before implementation; updating (ATS-N/UA), correcting (ATS-N/CA) and order display or fair access (ATS-N/OFA) amendments as required; ATS-N-C on ceasing operations.
Filings per year
Every ATS-N filing on EDGAR, counted from the SecFeed index, amendments included. Updated daily.
What is inside
| Section | Contents |
|---|---|
| Part I and II: operator | Broker-dealer operator, its affiliates and their trading activities on the ATS. |
| Part III: operations | Subscribers, order types, order interaction, segmentation, display and fees. |
| Conflicts of interest | How the operator's other business lines interact with the ATS. |
| Market data | Data sources used and how prices are calculated. |
| Fair access | Thresholds and standards for granting or limiting access. |
Get ATS-N data with SecFeed
Search the filings with formType:"ATS-N/UA", read any document as text or PDF, and use these APIs for structured data:
Search every SEC EDGAR filing since 1993 with Lucene-style queries over ticker, CIK, form type, filing date, company, SIC and 8-K items.
Full-Text Search APISearch every word of every EDGAR filing and exhibit since 2001. Exact phrases, form type, CIK and date filters, results as JSON.
Latest ATS-N filings
| Company | Form | Filed | |
|---|---|---|---|
| INTELLIGENT CROSS LLC | ATS-N/UA | 2026-10-09 | EDGAR ↗ |
| INTERACTIVE BROKERS LLC | ATS-N/MA | 2026-10-08 | EDGAR ↗ |
| BLUE OCEAN ATS, LLC | ATS-N/UA | 2026-10-08 | EDGAR ↗ |
| GOLDMAN SACHS & CO. LLC | ATS-N/UA | 2026-10-07 | EDGAR ↗ |
| TMX ALPHA US, LLC | ATS-N/MA | 2026-10-05 | EDGAR ↗ |
| BIDS TRADING L.P. | ATS-N/MA | 2026-10-05 | EDGAR ↗ |
| CITIGROUP GLOBAL MARKETS INC. | ATS-N/UA | 2026-10-05 | EDGAR ↗ |
| BLUE OCEAN ATS, LLC | ATS-N/OFA | 2026-10-05 | EDGAR ↗ |
Use cases
- Compare dark pool rules and order types
- Monitor changes in ATS operations and fees
- Research market structure and conflicts of interest
Related forms
Form X-17A-5 Part III annual audited reports of every registered broker-dealer: statement of financial condition, net capital and auditor report.
SBSESwap dealersForm SBSE registrations of security-based swap dealers and major security-based swap participants since 2021, with amendments and withdrawals.
FAQ
Are ATS-N filings public?
Yes. Effective Form ATS-N filings and amendments are published on EDGAR, unlike the older Form ATS, which was confidential.
Every ATS-N filing, one API call away
500 free calls a month. JSON, CSV, PDF and a Python SDK.