★ BEST INVESTING TOOLS COMPARISON ★
VOL. XCIV, NO. 247
Tool comparison edition
Tool Comparison
13F Insight vs ChartMill
13F Insight
Best for AI research
Free • Contact for pricing
ChartMill
Best for screeners and stock ideas
Free • Paid plans available
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The verdict
The bottom line
13F Insight and ChartMill cover a lot of the same ground (8 shared categories, including data visualizations, watchlist, and institutional ownership), so for the basics you won't go far wrong with either. ChartMill simply does more: 24 categories to 13F Insight's 9, including screeners, stock ideas, and stock comparison. 13F Insight counters by being completely free.
Key differences at a glance
- Global coverage
- ChartMill
- Broader coverage
- ChartMill24 vs 9 categories
- API access
- 13F Insight
- Asset coverage
- 13F InsightAdds options and bonds
- Free plan
- Both
Choose
13F Insight if…
- You want an API so you can script or automate things
- You care about AI research, something ChartMill doesn't offer
Choose
ChartMill if…
- You care about screeners, stock ideas, and stock comparison, things 13F Insight doesn't offer
- You trade often and need tooling built for speed
Comparison snapshot
| Attribute | ||
|---|---|---|
| Pricing & plans | ||
Starting price | Free • Contact for pricing | Free • Paid plans available |
Free tier | Yes | Yes |
Free trial | — | — |
Plan limits | 3 limits: Free: watchlist items: 5, Standard: watchlist items: 20 +1 more | Free: financials history: 4 years/quarters (free users, example pages). |
| Platforms & access | ||
Web app | Yes | Yes |
Mobile app | No | No |
API access | Yes | No |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Best for | Retail Traders, Pro Retail +3 more | Retail Traders, Pro Retail +6 more |
Categories covered | 9 | 24 |
Regions | North America | North America, Europe |
| Data & capabilities | ||
Data quality | — | 3 signals: Latency: 15-min Delayed and End of Day, Granularity: EOD and Minute +1 more |
Capabilities | AI summaries: Filings | Custom formulas and Universe builder |
Security | Encryption in transit | — |
| Try it | Visit 13F Insight | Visit ChartMill |
Standout features
What 13F Insight does best
- Tracks institutional investors, analyzes 13F filings, and shows what hedge funds are buying and selling.
- Covers SEC 13F institutional holdings, Form 4 insider transactions, and 13D/G beneficial ownership reports.
- Provides AI-generated analysis of position changes, filing summaries, and unusual activity alerts.
- Offers watchlists for both filers and stocks; Free accounts can watchlist 5 items, Standard 20, and Pro 100.
- Standard and Pro plans include email alerts for watchlist activity.
What ChartMill does best
- Free advanced stock screener with technical + fundamental filters (dividend, valuation, growth, profitability, health), ChartMill ratings, custom expressions, saved screens, and customizable result views (tables/charts).
- Trading Ideas library of 289 ready-to-use screen configurations spanning technical breakout/pullback setups, CANSLIM, Minervini, GARP, O’Shaughnessy Tiny Titans, dividend, value and growth strategies; each can be run and adapted.
- Charting with multi-chart layouts, multiple timeframes (including intraday), and save/load chart configurations; supports watchlist-based charting.
- Full-screen chart mode adds custom indicators (including fundamentals), event markers (earnings/dividends/splits), drawings/annotations, alerts, and a built-in position sizing tool.
- Stock pages aggregate technical & fundamental ratings/reports with financial statements, analyst ratings/price targets, earnings estimates, ownership/short interest, and news; Analyzer pages combine technical ratings, setup quality and fundamental reports for growth, valuation, health, profitability and dividend.
Data & access details
| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | StocksETFsOptionsBonds | StocksETFs |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Target audience | Retail TradersPro RetailValue InvestorsGrowth InvestorsAnalysts | Retail TradersPro RetailDay TradersSwing TradersLong-term InvestorsGrowth InvestorsValue InvestorsDividend Investors |
Regions | North America | North AmericaEurope |
Coverage details | Countries: USIdentifiers: Ticker, CUSIP, and CIK | 17 countries9 exchangesIdentifiers: Ticker and ISIN |
| Data | ||
Data freshness | Not specified | 15-min DelayedEnd of Day |
Data granularity | Not specified | EODMinute |
| Access & integrations | ||
Export formats | Not specified | CSV |
| Plans & trust | ||
Security & compliance | Encryption in transit | Not specified |
Capability signals | AI summaries: Filings | Custom formulasUniverse builder |
Vendor & support | 13F InsightSupport: Email | ChartMill |
Green tags are exclusive to that tool in this comparison.
Pricing breakdown
Free
Starting price
Plans & pricing
- watchlist items: 5
- watchlist items: 20
- watchlist items: 100
Free
Starting price
Plans & pricing
- financials history: 4 years/quarters (free users, example pages).
Coverage overlap
Shared categories
8Where the two tools cover the same ground.
13F Insight strengths
1What you only get with 13F Insight.
ChartMill strengths
16Community category leaders
Vote sentiment comparison
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Frequently Asked Questions
What's the difference between 13F Insight and ChartMill?
13F Insight leans toward data visualizations, watchlist, and institutional ownership, while ChartMill puts more weight on screeners, stock ideas, and stock comparison. They overlap in 8 categories, so for most people it comes down to workflow preference and price.
How much do 13F Insight and ChartMill cost?
Good news: both 13F Insight and ChartMill have free plans, so you can run them side by side and only pay if you hit a wall.
Does 13F Insight or ChartMill have an API?
13F Insight has an API for programmatic access and custom integrations. ChartMill doesn't, so you're working through its interface.
Should I choose 13F Insight or ChartMill?
It depends on what you're after. Pick 13F Insight if AI research matter to you; go with ChartMill if you'd rather have screeners and stock ideas. And if you only need the basics both share, let price decide.
What asset classes do 13F Insight and ChartMill cover?
Both cover stocks and ETFs. 13F Insight also handles options and bonds.
Which covers international markets: 13F Insight or ChartMill?
ChartMill has documented international coverage (North America and Europe), so it's the safer bet if you hold non-US stocks. 13F Insight is more region-specific, mainly North America.
Can I export data from 13F Insight and ChartMill?
ChartMill exports to CSV. 13F Insight is stingier about getting data out.
Is 13F Insight or ChartMill better for day trading?
ChartMill is the one positioned more for active traders. 13F Insight is the better fit if you care less about fast trading workflows and more about a calmer research process.
Which has a better stock screener: 13F Insight or ChartMill?
ChartMill has a stock screener for surfacing ideas; 13F Insight doesn't, and focuses its energy elsewhere.
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Curation & Accuracy
This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).
Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.