Live institutional position tracking — 13F filings, insider transactions, activist 13D/G moves, and cross-manager cluster alerts — at fractions of a cent per record vs $50-100/month per WhaleWisdom seat.
Hedge fund and asset manager position changes are the most-followed disclosures in advantage research. Bridgewater’s new buys, Berkshire’s complete exits, an activist filing 13D against a $2B small-cap — these are the data points that move sector ETFs and single names. The data is all public via SEC EDGAR. The problem is that EDGAR’s raw XML is unworkable, and the polished aggregators (WhaleWisdom, Quiver Quantitative, Capital IQ) charge per-seat subscriptions that don’t fit batch-pipeline workflows.
This page tracks the highest-impact moves from the NexGenData institutional-tracking actors. Each is priced per filing or per holding, no monthly seat fees.
This quarter’s whale moves
Top 5 institutional-position deltas by absolute dollar change, latest filing window. Live data refreshes as filings post to EDGAR.
Last refresh: 2026-09-01 05:54 UTC — weekly via SEC 13F Holdings Tracker actor.
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Why this beats WhaleWisdom, Quiver, Capital IQ for batch institutional research
| Feature | NexGenData whale actors | WhaleWisdom | Quiver Quantitative | Capital IQ |
|---|---|---|---|---|
| 13F holdings + deltas | Yes — per-record pricing | Yes (subscription) | Yes (subscription) | Yes (enterprise) |
| Insider cluster detection | Yes — built-in algorithm | Manual filter | Built-in | Built-in |
| Schedule 13D/G activist filings | Yes | Yes | No | Yes |
| Form 4 real-time insider trades | Yes | Yes | Yes | Yes |
| Cost | $0.005-0.02 per filing | $50/mo/seat | $10-100/mo/seat | $15K+/yr/seat |
| API / batch export | Apify actor — JSON/CSV/Excel | API on Premium tier | REST API included | Enterprise tier |
| Custom alerts on watchlists | Via Apify webhooks | Email alerts | API + webhooks | Limited |
The actors
SEC 13F Holdings Tracker
SEC 13F Holdings Tracker — Full quarterly institutional holdings, every filer with $100M+ AUM. Pull holdings by manager (CIK), by ticker, or by sector. Output includes share counts, market values, position-rank changes.
13F Delta Tracker
13F Holdings Delta Tracker — Computes quarter-over-quarter position changes for every manager × ticker pair. Surfaces new positions, complete exits, and additions/reductions above configurable thresholds. The delta is the advantage — current snapshots are noise.
Insider Cluster Detector
Insider Cluster Detector — Aggregates Form 4 filings into cluster alerts: 3+ insiders at the same company transacting in the same direction within a 30-day rolling window. Returns cluster size, total dollar value, insider-role breakdown (CEO/CFO/director/10%-owner).
Schedule 13D / 13G Activist Tracker
Schedule 13D/G Activist Tracker — Real-time activist filings (13D = active intent, 13G = passive). Output includes target company, filer, percent owned, and the 13D narrative text (statement of intent). Most-tracked dataset for event-driven hedge fund strategies.
SEC Form 4 Insider Trading
Form 4 Insider Tracker — Every reported insider transaction within 2 business days of trade. Filterable by insider role, transaction type, ticker. Pair with Insider Cluster Detector for the high-impact cluster subset.
SEC Form 8-K Material Events
SEC 8-K Material Events — Real-time material event disclosures (acquisitions, executive changes, earnings revisions, bankruptcies). Filterable by Item type (1.01 entry into material agreement, 2.02 results of operations, 5.02 departure of officers, etc.).
Use cases
Event-driven hedge fund desk. 13D filings on sub-$5B-cap companies surface targets within hours of public disclosure. Activist-positioning trades capture the post-announcement re-rating window.
Long/short equity analyst. Cross-reference 13F deltas with insider-cluster alerts — a manager building a new position alongside an insider-buy cluster is a higher-conviction setup than either indicator alone.
Quant systematic strategy. Pull full 13F universe quarterly, compute every manager-ticker delta, regress against forward returns. Repeat for Form 4 insider transactions weekly. The data is permissive and structured for time-series factor research.
Wealth advisor with HNW clients. Build personalized “follow the smart money” watchlists by selecting 5-10 trusted managers. Auto-refresh on each quarterly 13F. Output to client-facing dashboard or PDF.
Frequently asked questions
What’s a 13F filing and why does it matter?
Form 13F is the SEC-mandated quarterly disclosure of equity holdings by investment managers with $100M+ in AUM. Roughly 5,500 managers file every quarter, disclosing ~$30 trillion in tracked positions. New positions, large additions, and complete exits are leading indicators for sector and single-name moves.
How is this different from WhaleWisdom?
WhaleWisdom is $50/month per seat with a clean web UI for browsing manager holdings. NexGenData’s 13F actors are pay-per-result (typically fractions of a cent per holding) and return clean JSON/CSV ready for custom analysis. Use WhaleWisdom for browse-and-research workflows; use the actors for batch pipelines, custom models, and integration with your own infrastructure.
Why track 13F deltas instead of just current holdings?
The interesting indicator isn’t where Bridgewater is right now — it’s how that changed quarter-over-quarter. New positions, additions of 10%+, and complete exits cluster around fundamental thesis changes. The 13F Delta Tracker computes these deltas automatically across all filers.
What’s an ‘insider cluster’ and why does it matter?
A cluster is when 3+ insiders at the same company buy (or sell) within a 30-day window. Single insider buys are noise; clusters indicate coordinated conviction. Academic research consistently finds insider-cluster alerts predictive of 6-12 month forward returns above market.
What about activist investor moves?
Schedule 13D and 13G filings are required when a holder crosses 5% beneficial ownership. 13D is the ‘activist’ flavor (the holder intends to influence management); 13G is passive. Real-time 13D filings against companies under $5B market cap have historically generated outperformance within 30 days as the market re-prices for activist scrutiny.
How fresh is the data?
13F filings are due 45 days after quarter end — actors process new filings within hours of EDGAR posting. Form 4 insider transactions are filed within 2 business days of the trade. Schedule 13D/G filings within 10 days of crossing 5%. The latency is regulatory, not technical.
Can I get alerts on specific tickers or managers?
Configure the actor with a watchlist of tickers and / or filer CIK numbers. Run on a schedule (hourly during market hours). Webhook destination delivers alerts to Slack, Discord, or any HTTP endpoint when a tracked filing posts.
Browse the full NexGenData catalog →
New — SEC Filing Monitor: get Form 4, 8-K and Schedule 13D/G as a clean, event-labeled CSV + JSON feed, every row linked to sec.gov. See plans · free sample.
Factual public data — not financial or investment advice.