SEC filings & market structure

Institutional Holdings (13F)

Returns 13F holdings — quarterly snapshots of equity positions held by institutional investment managers with $100M+ AUM, filed with the SEC. Each record is one (fund, security, quarter) tuple.

EndpointGET /v1/institutional-holdings

SourceSEC Form 13F

Authx-api-key — a free key works

What it returns

One record per result. Fields (from a live response):

Identity — issuer_name, fund_cik, position_change, fund_name
Subject — cusip, ticker
Dates — filing_date
The trade / event — verification_status
Amounts — market_value, shares_held, market_value_thousands, share_type, shares_change_pct, verification_value_expected, shares_change, verification_value_actual
Provenance — filing_url, data_source, accession_number
Details — investment_discretion, id, quarter, verification_expected, verification_actual

Filters

ticker	Filter to holdings of one stock by US ticker, e.g. 'AAPL'. Case-insensitive.
cusip	Alternative to ticker — 9-character SEC CUSIP identifier. Useful when a security has multiple share classes with different tickers.
fund_name	Full or partial fund name; case-insensitive substring match. Examples: 'Berkshire', 'Bridgewater', 'Citadel'.
fund_cik	SEC CIK of the fund (10-digit, padded). Preferred over fund_name when known. Berkshire Hathaway = '0001067983'.
quarter	Period ending date in YYYY-MM-DD form (e.g. '2026-03-31'). Defaults to all quarters available in the database.
position_change	Filter to position-change type. Common queries: 'increased' for funds adding to a position, 'closed' for funds that exited.
min_value	Filter to positions with market_value >= this amount (USD). Use to focus on large positions.
sort_by	Field used for ordering. Default: market_value (largest positions first).
sort_order	Default: desc (largest first).
limit	Maximum records to return. Default 50, max 500.

Example request

curl "https://api.keyvex.com/v1/institutional-holdings?ticker=AAPL&limit=1" \
  -H "x-api-key: YOUR_KEY"

Response

{
  "results": [
    {
      "cusip": "67066G104",
      "market_value": 422736430797,
      "ticker": "NVDA",
      "shares_held": 2266683275,
      "filing_url": "https://www.sec.gov/Archives/edgar/data/102909/000010290926000031/13F_0000102909_20251231.xml",
      "filing_date": "2026-01-29",
      "market_value_thousands": 422736431,
      "data_source": "SEC_EDGAR_13F",
      "issuer_name": "NVIDIA CORPORATION",
      "accession_number": "0000102909-26-000031",
      "investment_discretion": "DFND",
      "share_type": "SH",
      "fund_cik": "0000102909",
      "shares_change_pct": null,
      "id": "13f-0000102909-67066G104-2025-12-31",
      "quarter": "2025-12-31",
      "verification_expected": 17686,
      "verification_value_expected": 6897676080637,
      "shares_change": null,
      "verification_status": "VERIFIED",
      "verification_value_actual": 6897676080637,
      "verification_actual": 17686,
      "position_change": null,
      "fund_name": "Vanguard Group"
    }
  ],
  "count": 1,
  "has_more": true
}

Example questions you can answer

Which funds hold the most of a given stock this quarter?
Track an institution's position changes across quarters.

Related datasets

Insider TransactionsSEC Form 4 / 5 insider buys and sells.Planned Insider SalesSEC Form 144 Activist Stakes (13D / 13G)SEC Schedule 13D / 13G Fund Filings (N-PORT)SEC Form N-PORT

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