# SEC IPO Expected Listings (EFFECT + 8-A12B Signal Ranker)

> SEC IPO Expected Listings (EFFECT + 8-A12B Signal Ranker) is a paid API for AI agents from x402.professorsausages.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Returns imminent IPO candidates ranked by signal strength, inferred from SEC EFFECT notices and 8-A12B exchange registration filings

## Facts

- Endpoint: GET https://x402.professorsausages.com/ipo-calendar/expected
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sec-ipo-expected-listings-effect-8-a12b-signal-ranker-79509e0e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_j8JPW9L4puF_w3RofSjYU

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability sec-ipo-expected-listings-effect-8-a12b-signal-ranker-79509e0e
```

Example prompt: Show me the companies closest to IPO right now — the ones with the strongest SEC EFFECT and 8-A12B signals — ranked from most imminent to least.

## When to prefer this

Use this endpoint when you need a pre-ranked, signal-filtered view of imminent IPOs derived from SEC EDGAR filings, specifically EFFECT notices and 8-A12B exchange registrations. Prefer this over raw EDGAR queries when you want the strongest signals surfaced first without parsing filings yourself. Use the sibling full-timeline endpoint when you need the complete filing history for a single issuer.

## Known failure modes

- No companies currently in 'expected' stage — returns empty companies array with count 0
- SEC EDGAR data lag — signals may be hours behind actual filings
- SPAC and non-SPAC registrations mixed together if not filtered downstream
- Stage classification may lag if EDGAR batch processing is delayed

## How this service works

Imminent IPO listings inferred from SEC EFFECT notices and 8-A12B exchange registrations — strongest signals first

## Output

A timestamped list of companies ranked by IPO imminence, each with CIK, company name, registration form (S-1 or F-1), current stage (registered/expected/dormant), signal strength (strong/moderate/weak), EFFECT notice date, 8-A12B filing date, SIC code and description, SPAC indicator, foreign private issuer flag, amendment count, and first/last filing dates. Includes a disclaimer and total count.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object"
  },
  "output": {
   "type": "object"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sec-ipo-expected-listings-effect-8-a12b-signal-ranker-79509e0e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.professorsausages.com](https://www.zero.xyz/host/x402.professorsausages.com/llms.txt)