13f API13f.info ↗
Access SEC 13F manager portfolios, holdings by CUSIP, filing history, and Form D filings via the 13f.info API. 9 endpoints covering institutional investor data.
What is the 13f API?
The 13f.info API provides 9 endpoints for querying SEC 13F institutional holdings and Form D filings. You can retrieve full manager profiles with CIK and location via get_manager_profile, pull position-level data including ticker, CUSIP, value, shares, and portfolio weight via get_filing_detail, or search Form D filings by company name, industry, date range, and location. Coverage spans historical quarterly filings across all SEC-registered 13F filers.
curl -X GET 'https://api.parse.bot/scraper/c369224d-2790-4a77-b971-a10dd24d3b50/search_managers?query=Berkshire' \ -H 'X-API-Key: $PARSE_API_KEY'
Typed, relational, agent-ready
A generated client with real types, enums, and the links between objects — the structure a flat JSON response can't carry. Autocompletes in your editor and reads cleanly to coding agents.
- Fully typed · autocompletes
- Objects link to objects
- Typed errors & pagination
Typed Python client. Set up the SDK in your uv project, then pull this API’s typed client:
uv add parse-sdk uv run parse init uv run parse add --marketplace 13f-info-api
uv run parse add --marketplace pulls a pinned snapshot of this canonical API — it won’t change underneath you. To customize it, subscribe and swap to your own copy.
from parse_apis.thirteenf_info_sec_filings_api import ThirteenF, Letter
client = ThirteenF()
# Browse managers by letter
for mgr in client.managers.list_by_letter(letter=Letter.B):
print(mgr.name, mgr.location, mgr.holdings_value_000)
# Search for a specific manager
for result in client.managers.search(query="Berkshire Hathaway"):
print(result.name, result.id, result.url)
# Get latest filings across all managers
for filing in client.managers.latest_filings():
print(filing.manager, filing.period, filing.date_filed, filing.holdings_value_000)
# Get detailed holdings for a specific filing
detail = client.filings.get(filing_id="000119312526054580-berkshire-hathaway-inc-q4-2025")
print(detail.manager_name, detail.holdings_as_of, detail.form_type)
for holding in detail.holdings:
print(holding.ticker, holding.issuer, holding.value_000, holding.portfolio_pct)
# Navigate into a constructible manager's sub-resources
berkshire = client.manager(id="0001067983-berkshire-hathaway-inc")
# List filing history
for f in berkshire.filings.list():
print(f.quarter, f.holdings, f.value_000, f.top_holdings)
# Get CUSIP holding history for Apple
for quarter in berkshire.cusip_history.list(cusip="037833100"):
print(quarter.quarter, quarter.value_000, quarter.portfolio_pct, quarter.shares)
# Search Form D filings
for result in client.formdentities.search(query="Tesla"):
print(result.company_name, result.date_filed, result.industry, result.location)
# Get Form D entity details
entity = client.formdentities.get(entity_id="0001318605-tesla-inc")
print(entity.name, entity.entity_type, entity.cik)
for f in entity.filings:
print(f.date_filed, f.security_types, f.total_amount_sold)
Full-text search for 13F filing managers by name or investment keyword. Returns matching managers and investments with their IDs and profile URLs.
| Param | Type | Description |
|---|---|---|
| queryrequired | string | Search query (manager name or investment name) |
{
"type": "object",
"fields": {
"items": "array of matching managers/investments with name, id, url, and optional type field"
},
"sample": {
"data": {
"items": [
{
"id": "0001067983-berkshire-hathaway-inc",
"url": "https://13f.info/manager/0001067983-berkshire-hathaway-inc",
"name": "Berkshire Hathaway Inc (Warren Buffett) Omaha, NE"
}
]
},
"status": "success"
}
}About the 13f API
Manager Discovery and Portfolio History
The search_managers endpoint accepts a free-text query for manager or investment names and returns matching records with their ID slugs and URLs. Once you have a manager_id (formatted as CIK-name-slug, e.g. 0001067983-berkshire-hathaway-inc), get_manager_profile returns the full record: name, location, CIK, notable people, a reference to the most recent 13F, a link to all SEC filings, and a filings array covering the manager's complete filing history. list_all_managers returns a curated set of well-known managers with latest filing date, holding count, and total holdings value in thousands. list_managers_by_letter lets you page through the full universe of filers alphabetically.
Filing-Level Holdings Data
get_filing_detail takes a filing_id slug (e.g. 000119312526054580-berkshire-hathaway-inc-q4-2025) and returns filing metadata — manager name, location, holdings_as_of date, total value, date_filed, and form_type — alongside a holdings array with per-position fields: ticker symbol, issuer name, CUSIP, market value, share count, and portfolio weight. get_manager_cusip_history takes a CIK and a CUSIP (e.g. 037833100 for Apple) and returns the title, symbol, investment type, share class, and a history array of quarterly positions, useful for tracking how a single manager's stake in one security has changed over time.
Form D Filings
search_form_d supports querying private placement filings by company name (query), date range (from_date / to_date in YYYY-MM-DD format), location (city, state), and comma-separated industries. The response includes total_records, filtered_records, and a paginated results array. get_form_d_entity takes an entity ID slug from a search result and returns the entity's name, location, industry_group, entity_type, CIK, previous_names, related_people, and a filings array covering all Form D submissions on record for that entity.
Recent Activity Feed
get_latest_filings requires no inputs and returns the newest 13F filings across all managers, with each record carrying manager, manager_id, period, filing_id, date_filed, num_holdings, and holdings_value_000. This is useful for polling for newly submitted filings without having to track individual manager IDs.
The 13f API is a managed, monitored endpoint for 13f.info — not a raw scraper you maintain. Every endpoint is automatically health-checked on a schedule, and when 13f.info changes and a check fails, the API is automatically queued for repair and re-verified. It is built to keep working as the site underneath it changes.
This isn't an official 13f.info API — it's an independent, maintained REST wrapper over public data. Where the source has no official API (or only a limited one), Parse gives you a stable contract over a source that never promised one, and keeps it current. Need a new endpoint or field? You can revise it yourself in plain English and the agent rebuilds it against the live site in minutes — contributing the change back to the shared API is free.
Will this API break when the source site changes?+
Is this an official API from the source site?+
Can I fix or extend this API myself if I need a new endpoint or field?+
What happens if I call an endpoint that has an issue?+
- Monitor when a specific institutional manager adds or reduces a position in a security using
get_manager_cusip_historyby CUSIP. - Build a 13F filing tracker that alerts on newly submitted filings using
get_latest_filings. - Reconstruct a manager's full portfolio at any historical quarter using
get_filing_detailholdings data. - Screen Form D private placement filings by industry and date range to identify early-stage fundraising activity.
- Cross-reference institutional 13F holders of a given CUSIP across multiple managers to estimate aggregate ownership.
- Index the full universe of 13F filers alphabetically with
list_managers_by_letterfor autocomplete or directory features. - Enrich a CRM with entity details, related people, and filing history pulled from
get_form_d_entity.
| Tier | Price | Credits/month | Rate limit |
|---|---|---|---|
| Free | $0/mo | 100 | 5 req/min |
| Hobby | $30/mo | 1,000 | 20 req/min |
| Developer | $100/mo | 5,000 | 100 req/min |
One credit = one API call regardless of which marketplace API you call. Exceeding the rate limit returns a 429 response. Authenticate with the X-API-Key header.
Does 13f.info have an official developer API?+
What position-level fields does `get_filing_detail` return for each holding?+
get_filing_detail returns a holdings array where each entry includes the issuer name, ticker symbol, CUSIP, reported market value, share count, investment type or share class (where disclosed in the filing), and the position's percentage weight within the total portfolio. The metadata object on the same response gives the manager name, filing date, holdings-as-of date, total portfolio value, and form type.Can I retrieve real-time or intraday position data through this API?+
get_latest_filings endpoint surfaces the most recently submitted filings, but the positions themselves are inherently historical.Does the API return 13G or 13D activist filings in addition to 13F?+
How does pagination work for `search_form_d`?+
search_form_d accepts limit (number of records to return) and start (zero-based offset) to paginate results. The response includes total_records and filtered_records counts so you can calculate how many pages exist for a given query.