/api/v1/cusip/ticker/{ticker}

Resolve Ticker to CUSIP.

Why use this

Reverse direction of [GET /api/v1/cusip/lookup/{cusip}](/docs/reference-data/cusip-api/get-cusip-lookup) — given a ticker, return the CUSIP. Useful when you need to bridge ticker-shaped customer input into CUSIP-shaped 13F query parameters (e.g. `POST /form-13f/holdings` accepts CUSIPs but a UI may want to expose ticker search). Backed by `cusip_security_catalog`. Returns the CURRENT active CUSIP only — to retrieve historical CUSIPs across corporate actions append `?chain=true` (see [/cusip/ticker/{ticker}?chain=true](/docs/reference-data/cusip-api/get-cusip-ticker-chain)).

Common use case

Preparing data for institutional reporting or regulatory filings — converting customer-facing tickers (e.g. `AAPL`) into the CUSIP form (e.g. `037833100`) required by 13F holdings queries, regulatory submissions, and CUSIP6-grouped multi-class drill-downs. Also useful in 'enrich a watchlist of tickers with CUSIPs for batch 13F lookup' flows.

Reverse direction of GET /api/v1/cusip/lookup/{cusip} — ticker-in, CUSIP-out. The natural bridge from customer-facing ticker UIs into CUSIP-shaped downstream APIs (13F holdings query, batch resolution, etc.). Returns the CURRENT primary CUSIP only — to retrieve historical CUSIPs (e.g. RKLB's pre-SPAC G9442R126 -> post-SPAC 773122106 -> current 773121108 chain) append ?chain=true and use the chain variant. For multi-class issuers (BRK-A vs BRK-B) the result is class-specific — pass each ticker variant separately. Server-side ticker normalization (v3.14.2) coerces BRK.A, BRK/A, BRKA all to BRK-A before lookup.

Parameters

Name	In	Required	Default	Allowed	Description	Example
ticker	path	required	—	—	Canonical hyphen-form ticker (`BRK-A` not `BRK.A`). Server-side normalization applies the v3.14.2 ticker-coercion shim — `BRK.A`, `BRK/A`, `BRKA` all coerce to `BRK-A`. Returns 404 when no active CUSIP mapping exists (delisted issuers, foreign tickers without ticker-enrichment coverage).	AAPL

Response schema

Field	Type	Nullable	Description
status	string	no	—
request_id	string	yes	—
timestamp	string	no	—
data	array	no	Matching mapping records. With chain=true, additional historical mappings are appended to this same array.
data[].cusip6	string	yes	Optional; omitted when not applicable.
data[].ticker	string	yes	—
data[].security_name	string	yes	—
data[].security_type	string	yes	Optional; omitted when not applicable.
data[].cik	string	yes	Optional; omitted when not applicable.
data[].exch_code	string	yes	Optional; omitted when not applicable.
data[].mic_code	string	yes	Optional; omitted when not applicable.
data[].figi	string	yes	Optional; omitted when not applicable.
data[].composite_figi	string	yes	Optional; omitted when not applicable.
data[].share_class_figi	string	yes	Optional; omitted when not applicable.
data[].sector	string	yes	Optional; omitted when not applicable.
data[].industry	string	yes	Optional; omitted when not applicable.
data[].id_type	string	yes	Optional; omitted when not applicable.
data[].superseded_by	string	yes	Optional; omitted when not applicable.
data[].last_updated	string	yes	Optional; omitted when not applicable.
data[].created_at	string	yes	Optional; omitted when not applicable.
data[].cusip	string	no	—
data[].is_valid	boolean	yes	Optional; omitted when not applicable.
data[].from_chain	boolean	no	Optional; omitted when not applicable. Only present on an additional mapping found through chain=true.

Sample response

"status": "success"
"request_id": null
"timestamp": "2026-09-25T12:00:00Z"
"data":
]

}

Errors

Status	Label	Description
200	OK	Request succeeded.
400	Bad Request	Invalid query, body, or path parameter.
401	Unauthorized	Missing or invalid Authorization header / api_Token.
402	Payment Required	Insufficient token balance for this call. Top up
429	Too Many Requests	Rate limit exceeded for your tier (see /pricing for tier limits). Tier limits
500	Server Error	Unexpected server-side failure. Retry with backoff; report if persistent.

Code samples

Reveal credentials

curl "https://api.finradar.ai/api/v1/cusip/ticker/AAPL" \
  -H "X-API-Key: YOUR_API_KEY"

Generate an API key in /account/credentials to run live queries (literal YOUR_API_KEY placeholder shown until then).