$0.01
per call · USD Coin on Base
SEC Form 13F filings data showing institutional investment manager holdings. Form 13F is required to be filed quarterly by institutional investment managers with at least $100 million in qualifying assets under management. Can't find what you're looking for? POST feedback to /feedback, no charge.
Endpoint
GET https://agent.massive.com/stocks/filings/vX/13-F4
Calls / 30d
2
Unique payers / 30d
Sep 4
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://agent.massive.com/stocks/filings/vX/13-F", {
method: "GET",
});
const data = await res.json();curl -X GET \
"https://agent.massive.com/stocks/filings/vX/13-F?limit=100&sort=filing_date.desc" \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"next_url": "https://api.massive.com/stocks/filings/vX/13-F?cursor=eyJsaW1pd...",
"request_id": "a3f8b2c1d4e5f6g7",
"results": [
{
"accession_number": "0000950123-24-011775",
"cusip": "023135106",
"file_number": "028-04545",
"filer_cik": "0001067983",
"filing_date": "2024-11-14",
"filing_url": "https://www.sec.gov/Archives/edgar/data/1067983/0000950123-24-011775.txt",
"film_number": "241461756",
"form_type": "13F-HR",
"investment_discretion": "DFND",
"issuer_name": "AMAZON COM INC",
"market_value": 1439212920,
"other_managers": [
"Buffett Warren E"
],
"period": "2024-09-30",
"put_call": null,
"shares_or_principal_amount": 7724000,
"shares_or_principal_type": "SH",
"title_of_class": "COM",
"voting_authority_none": 0,
"voting_authority_shared": 0,
"voting_authority_sole": 7724000
},
{
"accession_number": "0000950123-24-011775",
"cusip": "025816109",
"file_number": "028-04545",
"filer_cik": "0001067983",
"filing_date": "2024-11-14",
"filing_url": "https://www.sec.gov/Archives/edgar/data/1067983/0000950123-24-011775.txt",
"film_number": "241461756",
"form_type": "13F-HR",
"investment_discretion": "DFND",
"issuer_name": "AMERICAN EXPRESS CO",
"market_value": 311864270,
"other_managers": [
"Buffett Warren E"
],
"period": "2024-09-30",
"put_call": null,
"shares_or_principal_amount": 1149942,
"shares_or_principal_type": "SH",
"title_of_class": "COM",
"voting_authority_none": 0,
"voting_authority_shared": 0,
"voting_authority_sole": 1149942
}
],
"status": "OK"
}Payment details
0x525f6ddce9af7a7179d7696aabfcd5fcd15a21e6USD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
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