VOL. XCIV, NO. 247
★ FINANCIAL TOOLS & SERVICES DIRECTORY ★
PRICE: 5 CENTS
Saturday, September 27, 2025
Investors comparing DATAROMA and OpenInsider will find that Both DATAROMA and OpenInsider concentrate on Insider Data workflows, making them natural alternatives for similar investment research jobs. DATAROMA leans into Stock Ideas, Investor Holdings, and 13F, which can be decisive for teams that need depth over breadth. OpenInsider stands out with Screeners, Regulatory Filings Monitoring, and Data Visualizations that the competition lacks. Use the feature-by-feature table to inspect unique capabilities and confirm which roadmap best maps to your process.
Head-to-head
DATAROMA vs OpenInsider
Compare pricing, supported platforms, categories, and standout capabilities to decide which tool fits your workflow.
Quick takeaways
- DATAROMA adds Stock Ideas, Investor Holdings, and 13F coverage that OpenInsider skips.
- OpenInsider includes Screeners, Regulatory Filings Monitoring, and Data Visualizations categories that DATAROMA omits.
- DATAROMA highlights: Tracks portfolios of well-known 'Superinvestors' through SEC 13F filings, with detailed views of holdings, buys/sells, and quarter-to-quarter activity., Stock pages display Superinvestor ownership counts, a defined 'Hold Price' (quarter-end close), insider transaction totals over the past six months, plus TradingView charts and fundamentals., and Real-time insider transaction feed based on SEC Form 4 filings, with filterable listings..
- OpenInsider is known for: Real-time screener of SEC Form 4 insider trading disclosures for U.S. stocks., Prebuilt screeners for quick discovery: Latest Purchases/Sales, $25k+ CEO or CFO buys, Cluster Buys, and weekly/monthly Top Purchases and Sales., and Aggregate Buy–Sell charts to visualize overall insider sentiment..
DATAROMA
dataroma.com
Free resource that tracks Superinvestor 13F filings and insider Form 4 activity. Features include manager portfolios, aggregated holdings, insider trade feeds, and stock idea rankings. Quotes are sourced via Intrinio, with charts and fundamentals powered by TradingView. The site requires no login or account to use.
Platforms
Pricing
Quick highlights
- Tracks portfolios of well-known 'Superinvestors' through SEC 13F filings, with detailed views of holdings, buys/sells, and quarter-to-quarter activity.
- Stock pages display Superinvestor ownership counts, a defined 'Hold Price' (quarter-end close), insider transaction totals over the past six months, plus TradingView charts and fundamentals.
- Real-time insider transaction feed based on SEC Form 4 filings, with filterable listings.
- ‘RealTime’ activity feed highlighting notable Superinvestor trades as they are reported.
- S&P 500 'Value Ranking' grid for idea generation and stock discovery.
OpenInsider
openinsider.com
Free web-based screener for U.S. SEC Form 4 filings, tracking insider buys and sells in real time. Data is sourced directly from SEC.gov and refreshed between 6:00 and 22:00 ET on U.S. business days.
Platforms
Pricing
Quick highlights
- Real-time screener of SEC Form 4 insider trading disclosures for U.S. stocks.
- Prebuilt screeners for quick discovery: Latest Purchases/Sales, $25k+ CEO or CFO buys, Cluster Buys, and weekly/monthly Top Purchases and Sales.
- Aggregate Buy–Sell charts to visualize overall insider sentiment.
- Detailed filing tables with trade/filing dates, transaction codes, prices, quantities, and values, with an integrated code legend.
- Ability to drill down by sector, industry, ticker, or individual insider profile.
Shared focus areas
Both platforms align on these research themes, so you can stay within one workflow when your use case involves them.
Where they differ
DATAROMA
Distinct strengths include:
- Tracks portfolios of well-known 'Superinvestors' through SEC 13F filings, with detailed views of holdings, buys/sells, and quarter-to-quarter activity.
- Stock pages display Superinvestor ownership counts, a defined 'Hold Price' (quarter-end close), insider transaction totals over the past six months, plus TradingView charts and fundamentals.
- Real-time insider transaction feed based on SEC Form 4 filings, with filterable listings.
- ‘RealTime’ activity feed highlighting notable Superinvestor trades as they are reported.
OpenInsider
Distinct strengths include:
- Real-time screener of SEC Form 4 insider trading disclosures for U.S. stocks.
- Prebuilt screeners for quick discovery: Latest Purchases/Sales, $25k+ CEO or CFO buys, Cluster Buys, and weekly/monthly Top Purchases and Sales.
- Aggregate Buy–Sell charts to visualize overall insider sentiment.
- Detailed filing tables with trade/filing dates, transaction codes, prices, quantities, and values, with an integrated code legend.
Feature-by-feature breakdown
| Attribute | DATAROMA | OpenInsider |
|---|---|---|
Categories Which research workflows each platform targets | Shared: Insider Data Unique: Stock Ideas, Investor Holdings, 13F | Shared: Insider Data Unique: Screeners, Regulatory Filings Monitoring, Data Visualizations |
Asset types Supported asset classes and universes | Stocks, ETFs | Stocks |
Experience levels Who each product is built for | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Platforms Where you can access the product | Web | Web |
Pricing High-level pricing models | Free | Free |
Key features Core capabilities called out by each vendor | Unique
| Unique
|
Tested Verified by hands-on testing inside Find My Moat | Yes | Yes |
Editor pick Featured inside curated shortlists | Standard listing | Highlighted |
Frequently Asked Questions
Which workflows do DATAROMA and OpenInsider both support?
Both platforms cover Insider Data workflows, so you can research those use cases in either tool before digging into the feature differences below.
Do DATAROMA and OpenInsider require subscriptions?
Both DATAROMA and OpenInsider keep freemium access with optional paid upgrades, so you can trial each platform before committing.
How can you access DATAROMA and OpenInsider?
Both DATAROMA and OpenInsider prioritize web or desktop access. Investors wanting a mobile-first workflow may need to rely on responsive web views.
What unique strengths set the two platforms apart?
DATAROMA differentiates itself with Tracks portfolios of well-known 'Superinvestors' through SEC 13F filings, with detailed views of holdings, buys/sells, and quarter-to-quarter activity., Stock pages display Superinvestor ownership counts, a defined 'Hold Price' (quarter-end close), insider transaction totals over the past six months, plus TradingView charts and fundamentals., and Real-time insider transaction feed based on SEC Form 4 filings, with filterable listings., whereas OpenInsider stands out for Real-time screener of SEC Form 4 insider trading disclosures for U.S. stocks., Prebuilt screeners for quick discovery: Latest Purchases/Sales, $25k+ CEO or CFO buys, Cluster Buys, and weekly/monthly Top Purchases and Sales., and Aggregate Buy–Sell charts to visualize overall insider sentiment..
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.