Why retail tracks 13F filings
13F filings are quarterly disclosures that institutional investment managers with $100M+ AUM are required to submit to the SEC within 45 days of each quarter end. They list every long equity position the manager holds (no shorts, no derivatives below certain thresholds, no cash bonds). For retail traders, 13F data offers two specific edges:
- Idea generation — see what Buffett, Burry, Ackman, Druckenmiller, Klarman, Loeb, and other proven investors are buying and selling. Not blind copy-trading; idea filtering.
- Smart-money positioning — when 5+ superinvestors hold the same position, that's a legitimate signal. ChartingLens has overlap detection that surfaces these clusters automatically.
The 45-day delay is real — by the time a 13F is public, the position may be old. Best used as a research filter, not a real-time signal.
Quick comparison
| Platform | Pricing | Standout |
|---|---|---|
| ChartingLens | Premium $14.99/mo (Free tier locks holdings) | Inline with charts + overlap detection |
| Dataroma | Free | Cleanest free 13F tracker for top funds |
| Stockcircle | Free / $5+/mo | Free read-only with portfolio history |
| WhaleWisdom | Free / $80-$200+/mo | Deepest historical 13F data |
| HedgeFollow | Free | Free hedge fund holdings dashboard |
| Insider Monkey | Free / $250/year Pro | Editorial commentary on 13F changes |
| GuruFocus | $15+/mo | Guru-style portfolio tracking |
| 13F.info | Free | Bare-bones SEC data extraction |
| Stockanalysis.com | Free | Light 13F section + general research |
| SEC EDGAR | Free (raw) | Direct from the source |
In-Depth Reviews
1ChartingLens — Best Inside-Charts 13F Tracking
ChartingLens uniquely integrates 13F holdings into your charting workflow. Premium and Pro track 10+ legendary investors — Warren Buffett, Michael Burry, Bill Ackman, Stanley Druckenmiller, Seth Klarman, Daniel Loeb, David Tepper, and others — with quarterly updates and overlap detection (positions held by 3+ superinvestors). View any tracked investor's full portfolio, click any position to chart it directly, see the AI's verdict on whether it's still a buy at current price. The 17-metric watchlist analytics tool ranks superinvestor holdings by insider ownership, short interest, P/E, analyst upside, etc. View pricing →
2Dataroma — Best Free 13F Tracker
Long-running free 13F tracker covering ~70 well-known investors. Read-only — no portfolio building, no alerts, no charts. Best as a quick reference when you want to check a specific investor.
3Stockcircle — Free Portfolio History
Clean UI with portfolio history visualization. Free tier is generous; paid tier adds historical depth and alerts. Best for casual 13F-watching.
4WhaleWisdom — Deepest Historical 13F Data
The pro 13F database. Historical data going back decades, advanced filtering, conviction scores. Pricing is institutional-leaning. Best for serious 13F researchers and analysts.
5HedgeFollow — Free Hedge Fund Dashboard
Free dashboard with searchable hedge fund holdings, quarter-over-quarter changes, and basic alerts. Less polished than Dataroma but free and adequate.
6Insider Monkey — Editorial 13F Coverage
Editorial articles analyzing 13F changes — "What Buffett bought this quarter" style. Helpful for context; less useful as a raw data tool.
7GuruFocus — Guru-Style Portfolio Tracking
Tracks 200+ "gurus" with deep historical data and value-investing scoring. Best for value-investing-focused 13F use.
813F.info — Bare-Bones SEC Extraction
Pure 13F data extraction from SEC EDGAR with minimal UI. Best for users who want raw, unmediated data.
9Stockanalysis.com — Light 13F Section
General stock research site with a 13F section. Decent supplement; not a primary 13F tool.
10SEC EDGAR — Direct from the Source
The SEC's raw filings database. Search by manager, download the 13F-HR forms directly. Useful for cross-referencing other tools.
How to actually use 13F data
13F data is a research tool, not a trading signal. The honest workflow:
- Filter for conviction: positions ≥5% of the manager's portfolio. Smaller positions are noise; large positions reflect actual conviction.
- Look for overlap: when 3+ superinvestors hold the same position, that's a legitimate signal. ChartingLens surfaces these automatically.
- Check timing: 13Fs are 45 days delayed. The position may have changed. Use the filing date as a starting point, not as confirmation the position still exists.
- Cross-reference with insider data: SEC Form 4 (insider buying/selling) is real-time. When superinvestor 13F + recent insider buying align, that's a stronger signal.
- Don't blind-copy: hedge fund managers have different time horizons, risk tolerances, and information than retail. Use 13F as idea generation, then form your own thesis.
Track 13F + insider data inside your charts
ChartingLens Premium tracks 10+ legendary investors with overlap detection, plus SEC Form 4 insider data — all integrated into your charting workflow.
View ChartingLens Pricing →Bottom line
For free read-only 13F dashboards, Dataroma and Stockcircle are excellent. For deep historical research, WhaleWisdom Pro is the institutional standard. For 13F integrated into a charting workflow with overlap detection, AI analysis, and insider-data cross-referencing — ChartingLens is the only platform that does it.