SEC Fails-to-Deliver
Run by Marvin Labs
Shares that failed to settle, by U.S. security and date
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About
Twice a month the SEC publishes how many shares of each U.S. equity security had failed to deliver on each settlement date, as recorded by the National Securities Clearing Corporation, with the prior day's closing price. A build-up of fails can point to short-selling pressure or settlement stress in a stock.
Each figure is the balance outstanding that day, so never add figures across days. The data runs about two weeks behind. The SEC notes that fails have many causes and are not, on their own, evidence of abusive short selling.
Nothing to set up and no key to bring. Marvin Labs runs this connector, so it is on unless you turn it off under Connectors in settings.
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Frequently asked questions
- What is a Connector?
- A Connector is an MCP server that Marvin Labs runs and authenticates. There is no URL to paste and no key to find: SEC Fails-to-Deliver is on for your account unless you turn it off. AI Analyst Chat and Deep Research Agents call its tools when a question needs them, and the answer shows which tool was called and what it returned.
- Does the SEC Fails-to-Deliver Connector require authentication?
- No. Marvin Labs holds the SEC Fails-to-Deliver credentials and signs every request, so there is nothing to set up.
- Does SEC Fails-to-Deliver change how financial data is sourced?
- No. When a question can be answered from the filings, earnings calls, and press releases Marvin Labs ingests through Automated Data Import, it answers from those. SEC Fails-to-Deliver is used only when a question needs data those documents do not carry, and the answer attributes that output to it.
- Where is SEC Fails-to-Deliver available?
- In both AI Analyst Chat and Deep Research Agents. Its tools stay out of the model's context until a request needs one, so an unused Connector takes up no context window.