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Form 13F is an independent sub-product within the SEC Filing family. It uses a seed-only pure cache model: the latest-quarter top 1,000 institutional managers × the most recent 4 quarters are pre-seeded. Cache misses return empty — no live upstream fallback.

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Endpoint

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GET
string
https://api.llmquantdata.com/filings/13f/managers
Forward-enumeration of the latest-quarter smart money universe by current_scope_rank ascending (rank 1 = largest 13F reportable value). Use this when you don’t yet know a specific manager_cik or ticker — for example, to build a “Top N funds by AUM proxy” pool before fanning out to /filings/13f/by-manager for holdings.

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Parameters

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limit
integer
default:100
Number of managers to return, sorted by current_scope_rank ascending. Server clamps to [1, 1000].
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period
string
Quarter-end date in YYYY-MM-DD (e.g. 2025-12-31). Omit to get the current ranked quarter. Only the latest seeded quarter has ranking data; any other in-scope period returns an empty managers list with an explanatory scope_notice.

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Response

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data
object

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Error Handling

ScenarioStatusBody
period not in YYYY-MM-DD format400{ "error": "period must be in YYYY-MM-DD format." }
period is well-formed but not the latest ranked quarter200Empty managers + meta.scope_notice (only latest quarter is stored)
Insufficient credits402{ "error": "Insufficient credits." }

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Caching

  • Seed-only pure cache. Ranking is materialized in canonical.sec_13f_managers (see Form 13F seed pipeline). No live upstream fallback.
  • Only the latest ranked quarter is stored — historical rankings are not retained.

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Coverage Scope

Returned in every response under meta.scope: 
{
  "meta": {
    "creditsUsed": 1,
    "scope": {
      "managers_seeded": 1000,
      "latest_period": "2025-12-31",
      "earliest_period": "2025-03-31",
      "selection_basis": "latest quarter 13F reportable value desc",
      "is_top_1000_only": true
    },
    "scope_notice": "13F data covers the latest-quarter top 1,000 institutional managers ranked by 13F reportable value (an AUM proxy, not true firmwide AUM) across the last 4 quarters. This ranking excludes fixed income, options, non-U.S. holdings, and shorts."
  }
}
When a non-latest period is requested, the scope_notice is extended with a sentence explicitly noting that only the latest ranked quarter is stored.

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Code Examples

from __future__ import annotations

import requests

API_URL = "https://api.llmquantdata.com/filings/13f/managers"
HEADERS = {"X-API-KEY": "your_api_key_here"}


def fetch_top_managers(limit: int = 30) -> list[dict]:
    response = requests.get(
        API_URL,
        params={"limit": limit},
        headers=HEADERS,
        timeout=30,
    )
    response.raise_for_status()
    return response.json()["data"]["managers"]


def main() -> None:
    managers = fetch_top_managers(limit=30)
    print(f"Top {len(managers)} managers (latest quarter):")
    for manager in managers:
        rank = manager["current_scope_rank"]
        name = manager["manager_name"]
        value_b = manager["latest_reportable_value_usd"] / 1e9
        print(f"  #{rank:>3}  {name:<40}  ${value_b:,.1f}B")


if __name__ == "__main__":
    main()

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Example Response

{
  "data": {
    "managers": [
      {
        "manager_cik": "0001364742",
        "manager_name": "BLACKROCK INC.",
        "aliases": ["BLACKROCK", "BLACKROCK FUND ADVISORS"],
        "current_scope_rank": 1,
        "latest_reportable_value_usd": 4521893245678,
        "latest_reportable_value_period": "2025-12-31"
      },
      {
        "manager_cik": "0000102909",
        "manager_name": "VANGUARD GROUP INC",
        "aliases": ["VANGUARD"],
        "current_scope_rank": 2,
        "latest_reportable_value_usd": 4123456789012,
        "latest_reportable_value_period": "2025-12-31"
      }
    ]
  },
  "meta": {
    "creditsUsed": 1,
    "remainingCredits": 9999,
    "scope": {
      "managers_seeded": 1000,
      "latest_period": "2025-12-31",
      "earliest_period": "2025-03-31",
      "selection_basis": "latest quarter 13F reportable value desc",
      "is_top_1000_only": true
    },
    "scope_notice": "13F data covers the latest-quarter top 1,000 institutional managers ranked by 13F reportable value (an AUM proxy, not true firmwide AUM) across the last 4 quarters. This ranking excludes fixed income, options, non-U.S. holdings, and shorts."
  }
}

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Typical Usage — Build a Consensus Pool Client-Side

1. GET /filings/13f/managers?limit=30
   → take the top-30 manager pool for the latest quarter
2. For each manager_cik, GET /filings/13f/by-manager?manager_cik=...
   → fetch holdings
3. Aggregate client-side to build a consensus / overlap leaderboard

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Current Limitations

  • Latest-quarter ranking only — historical current_scope_rank values are not stored
  • Top 1,000 only — by latest-quarter 13F reportable value (an AUM proxy, not true AUM)
  • Not a semantic search — there is no keyword / free-text manager filter
  • Holdings are not included; fan out to /filings/13f/by-manager