Form ATS-N-C notices of cessation
Form ATS-N-C: notice that an NMS stock alternative trading system is ceasing operations, under Rule 304(a)(3) of Regulation ATS.
curl -H "Authorization: Bearer $SECFEED_KEY" \ "https://secfeedapi.com/v1/filings?query=formType:%22ATS-N-C%22&size=2"
import os, requests
r = requests.get(
"https://secfeedapi.com/v1/filings",
params={'query': 'formType:"ATS-N-C"', 'size': '2'},
headers={"Authorization": f"Bearer {os.environ['SECFEED_KEY']}"},
)
print(r.json())What is ATS-N-C?
An NMS stock ATS that stops operating must notify the SEC at least 10 business days before ceasing, on Form ATS-N-C. EDGAR shows about 20 such notices since 2019.
Each one marks a dark pool or similar venue leaving the market.
NMS stock ATSs ceasing operations.
At least 10 business days before the ATS stops operating.
Filings per year
Every ATS-N-C filing on EDGAR, counted from the SecFeed index. Updated daily.
What is inside
| Section | Contents |
|---|---|
| ATS | Name and operator. |
| Cessation date | When operations end. |
Get ATS-N-C data with SecFeed
Search the filings with formType:"ATS-N-C", read any document as text or PDF, and use these APIs for structured data:
Latest ATS-N-C filings
| Company | Form | Filed | |
|---|---|---|---|
| LEVEL MARKETS, LLC | ATS-N-C | 2026-03-13 | EDGAR ↗ |
| CODA MARKETS, INC. | ATS-N-C | 2026-03-06 | EDGAR ↗ |
| TOR BROKERAGE LLC | ATS-N-C | 2025-04-25 | EDGAR ↗ |
| CODA MARKETS, INC. | ATS-N-C | 2024-04-17 | EDGAR ↗ |
| PIPER SANDLER & CO. | ATS-N-C | 2023-12-19 | EDGAR ↗ |
| CREDIT SUISSE SECURITIES (USA) LLC | ATS-N-C | 2023-08-01 | EDGAR ↗ |
| AQUA SECURITIES L.P. | ATS-N-C | 2022-08-31 | EDGAR ↗ |
| BOFA SECURITIES, INC. | ATS-N-C | 2022-05-03 | EDGAR ↗ |
Use cases
- Track exits of alternative trading systems
Related forms
FAQ
What is ATS-N-C?
A notice that an NMS stock ATS will cease operations.
How much notice is required?
At least 10 business days before ceasing operations.
Every ATS-N-C filing, one API call away
500 free calls a month. JSON, CSV, PDF and a Python SDK.