SEC 13F Holdings Delta Tracker

Track quarter-over-quarter 13F holdings changes from SEC EDGAR, parsed into clean JSON. Built for analysts, funds, fintech builders and AI agents. Factual public SEC/EDGAR data — not financial or investment advice. Not affiliated with the U.S. SEC.

📊 Sample Output

filer_name	filer_cik	period_of_report	prior_period_of_report	company_name	title_of_class
BERKSHIRE HATHAWAY INC	0001067983	2026-06-30	2026-03-31	ALPHABET INC	CAP STK CL A
BERKSHIRE HATHAWAY INC	0001067983	2026-06-30	2026-03-31	ALPHABET INC	CAP STK CL C
BERKSHIRE HATHAWAY INC	0001067983	2026-06-30	2026-03-31	DELTA AIR LINES INC	COM NEW
BERKSHIRE HATHAWAY INC	0001067983	2026-06-30	2026-03-31	LENNAR CORP	CL A
BERKSHIRE HATHAWAY INC	0001067983	2026-06-30	2026-03-31	MACYS INC	COM

Real rows from run BFgmvDgqRZ3KVLbmi on build 0.0.11 (2026-09-25), unedited apart from masked emails/phones and shortened long text; fields the source does not publish are empty.

🔧 Input reference

Field	Type	Default	What it does
fund_names	array	["Berkshire Hathaway", "Tiger Global"]	List of fund / institutional manager names to track. Matches case-insensitive substring against the SEC EDGAR 13F filer name. Examples: 'Berkshire Hathaway' (Warren Buffett), 'Tig…
fund_ciks	array	[]	List of SEC CIK numbers for exact-match fund lookups. CIK is the SEC's permanent identifier for every registered filer. Examples: 0001067983 (Berkshire Hathaway), 0001167483 (Tige…
delta_types	array	["NEW", "INCREASED"]	Which categories of position changes to include. NEW = position went from zero last quarter to non-zero this quarter (highest-signal — fresh conviction trade). INCREASED = existin…
min_value_usd	integer	1000000	Skip delta records where the current-quarter position value is below this threshold. Filters out trivial $1K rebalances. Common thresholds: $1,000,000 (material trades only), $10,…
min_shares_change_pct	integer	10	For INCREASED and DECREASED deltas only — require the absolute percentage change in share count to exceed this threshold. Filters out routine 1-2% rebalances. Recommended: 10 (mat…
limit	integer	5	Maximum number of delta records to push to the dataset (one row per stock-level position change per fund). Typical hedge-fund-tracker analysts pull 50–200 deltas per refresh — tha…
include_top10_flag	boolean	true	If true, compute the boolean is_top10_new flag for each NEW / INCREASED delta — true means the stock entered the fund's top 10 portfolio positions this quarter (by USD value). Thi…
userAgentContact	string	""	SEC EDGAR requires a descriptive User-Agent that carries real contact info (see https://www.sec.gov/os/accessing-edgar-data). Optional — leave blank to use the operator default.

🧾 JSON sample record

One real record from run BFgmvDgqRZ3KVLbmi (emails/phones masked, long text shortened):

{
  "filer_name": "BERKSHIRE HATHAWAY INC",
  "filer_cik": "0001067983",
  "period_of_report": "2026-06-30",
  "prior_period_of_report": "2026-03-31",
  "symbol": "GOOGL",
  "company_name": "ALPHABET INC",
  "title_of_class": "CAP STK CL A",
  "cusip": "02079K305",
  "delta_type": "INCREASED",
  "shares_current": 78791167,
  "shares_prior": 54249798,
  "shares_change": 24541369,
  "pct_change": 45.2377,
  "value_usd_current": 28157599351,
  "value_usd_prior": 15600071913,
  "value_usd_change": 12557527438,
  "pct_of_portfolio_current": 9.4093,
  "is_new_position": false,
  "is_full_exit": false,
  "is_top10_new": false,
  "filing_url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526352200/56757.xml",
  "data_source": "sec.gov EDGAR 13F-HR (official, free)"
}

💰 Pricing

Event	Price (USD)	When it is charged
Actor Start (apify-actor-start)	$0.01	Charged when the Actor starts running. Number of events charged depends on Actor memory (one event per GB, minimum one event).
13F delta record (apify-default-dataset-item)	$0.05	Charged per quarter-over-quarter position delta returned (NEW / INCREASED / DECREASED / EXITED) with shares change, value change, % portfol…

Pay-per-event: you pay only for what the run delivers. A run that delivers nothing bills no result events (only the actor-start event, when the actor defines one). Example: a run that delivers 100 results costs 100 × $0.05 = $5.00 plus the start fee.

🔗 Related Actors

More from the NexGenData SEC & US filings family:

• China A-Share Earnings Calendar — 财报日历 API
• Analyst Price Targets — Consensus & Ratings API
• China A-Share Insider Trades — 高管持股变动 API

51 more in this family on the NexGenData Store page.

📊 What you get

Clean JSON, one record per position change. Key fields (full output has 22 fields):

• filer_name / filer_cik — the institutional manager that filed
• company_name — issuer name as reported on the 13F information table
• cusip — Security CUSIP (authoritative identifier)
• title_of_class — Security class
• delta_type — NEW / INCREASED / DECREASED / EXITED
• shares_current, shares_prior, shares_change, pct_change
• value_usd_current, value_usd_prior, value_usd_change
• pct_of_portfolio_current, is_top10_new
• period_of_report / prior_period_of_report — the two quarters compared
• filing_url — direct sec.gov link to the information table

symbol is a best-effort ticker for a short list of high-volume CUSIPs and is null for everything else — the SEC does not publish a free CUSIP→ticker map.

Pricing: $0.05 per record (Pay-Per-Event) — about 20 records per $1. An Actor Start fee of $0.01 applies per run (charged per GB of memory, minimum 1).

▶️ Input

You must name at least one fund, via fund_names (substring match against the tracked manager list) or fund_ciks (exact SEC CIK). With neither, the run returns 0 rows with an explanatory message and charges nothing.

{
  "fund_names": ["Berkshire Hathaway"],
  "delta_types": ["NEW", "INCREASED"],
  "limit": 5
}

🤖 Use with AI agents

Structured, source-linked SEC data built for LLM and agent pipelines — point Claude, the OpenAI Agents SDK, an n8n flow or any MCP-aware client at it and pull quarter-over-quarter 13F holdings changes on demand. Coverage depends on EDGAR availability and filing cadence.

Sample agent prompt:

Show which positions a fund added, trimmed or exited versus last quarter.

Agentic payments (x402): Supports agentic payment via x402 — agents can call this actor with USDC, no API key required.

⏰ Run on a schedule

The recurring frame is the point — 13F holdings are filed quarterly (45 days after quarter end), so a weekly pull catches each new filing as it lands:

{
  "fund_names": ["Berkshire Hathaway", "Tiger Global"],
  "limit": 50
}

🔗 Related SEC actors

More holdings trackers: 13F Tracker Pro, N-PORT Holdings, N-PORT-P Holdings, N-PX Proxy Votes

Agent front doors: SEC Corporate Events MCP, Regulatory Filings MCP

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Data parsed from public SEC EDGAR filings. Factual public SEC/EDGAR data — not financial or investment advice. Not affiliated with the U.S. SEC.