Tool Comparison
InsideArbitrage vs OpenInsider
- Paid from
- $1200/yr, billed annually
- Free plan
- Yes
- Platforms
- Web
Best if
- You want news, alerts, and calendar.
- Paid from
- —
- Free plan
- Yes
- Platforms
- Web
Best if
- Delayed quotes won't cut it; you need real-time data
Start here
InsideArbitrage
Free • From $1200/yr, billed annually · Web
- You want news, alerts, and calendar.
Pick OpenInsider instead if
OpenInsider
Free · Web
- Delayed quotes won't cut it; you need real-time data
Skip both if: Neither one clicks with how you research; there are strong third options.
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Our take
The bottom line
InsideArbitrage and OpenInsider cover a lot of the same ground (3 shared categories, insider data, screeners, and data visualizations), so for the basics you won't go far wrong with either. InsideArbitrage simply does more: 17 categories to OpenInsider's 3, including news, alerts, and calendar. OpenInsider counters by being completely free.
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Key differences at a glance
- Real-time data
- OpenInsider
- Broader coverage
- InsideArbitrage17 vs 3 categories
- Free plan
- Both
What InsideArbitrage does best
- Track announced mergers, spreads, calendars, deal updates and potential deals.
- Filter news, SEC filings and social posts for premium tracked-deal symbols.
- Research insider activity through transaction pages, weekly articles, cluster-buy screens and insider rankings.
- Follow buybacks, spinoffs, CVRs, tender offers, reverse splits, activist campaigns and management changes.
- Use 13F, 13D, 13G and Form 4 data for institutional and insider ownership context.
What OpenInsider does best
- Screening for real-time SEC Form 4 insider purchases and sales using data sourced from sec.gov.
- Prebuilt report pages such as Latest Insider Purchases to start from high-signal insider buying activity.
- Filters for ticker, filing date, trade date, insider, owner type, transaction type, value, price, and other table fields.
- Drill into ticker, insider, and industry pages to review related filings and transaction history.
- Insider buy-sell charts to visualize insider activity instead of reading only raw transaction tables.
Side by side
Pricing comparison
See for yourself
Side by side
Price, platforms, data, and market coverage.ShowHide
Side by side
| Attribute | ||
|---|---|---|
| Pricing & plans | ||
Starting price | Free • From $1200/yr, billed annually | Free |
Free tier | Yes | Yes |
Free trial | — | — |
| Platforms & access | ||
Web app | Yes | Yes |
Mobile app | No | No |
API access | No | No |
Broker sync | No | — |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Best for | — | — |
Categories covered | 17 | 3 |
Regions | — | North America |
| Data & capabilities | ||
Data quality | — | Latency: Real-time |
Capabilities | Universe builder | Universe builder |
| Try it | Visit InsideArbitrage | Visit OpenInsider |
Standout features
The best features of InsideArbitrage and OpenInsider.ShowHide
Standout features
What InsideArbitrage does best
- Track announced mergers, spreads, calendars, deal updates and potential deals.
- Filter news, SEC filings and social posts for premium tracked-deal symbols.
- Research insider activity through transaction pages, weekly articles, cluster-buy screens and insider rankings.
- Follow buybacks, spinoffs, CVRs, tender offers, reverse splits, activist campaigns and management changes.
- Use 13F, 13D, 13G and Form 4 data for institutional and insider ownership context.
What OpenInsider does best
- Screening for real-time SEC Form 4 insider purchases and sales using data sourced from sec.gov.
- Prebuilt report pages such as Latest Insider Purchases to start from high-signal insider buying activity.
- Filters for ticker, filing date, trade date, insider, owner type, transaction type, value, price, and other table fields.
- Drill into ticker, insider, and industry pages to review related filings and transaction history.
- Insider buy-sell charts to visualize insider activity instead of reading only raw transaction tables.
All details
Every attribute we track for InsideArbitrage and OpenInsider.ShowHide
All details
| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | StocksETFs | StocksClosed-End Funds |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Regions | Not specified | North America |
Coverage details | Identifiers: Ticker and CIK | Countries: USIdentifiers: Ticker and CIK |
| Data | ||
Data freshness | Not specified | Real-time |
| Access & integrations | ||
Export formats | Not specified | CSV |
| Plans & trust | ||
Capability signals | Universe builder | Universe builder |
Vendor & support | InsideArbitrageSupport: Email | Not specified |
Curation ratings | Methodology 3/5Reliability 3/5UX 4/5 | Not specified |
Green tags are exclusive to that tool in this comparison.
Pricing
Plans, billing, free trials, and monthly prices.ShowHide
Pricing
| Tier | ||
|---|---|---|
| Free plan | Free“Public Articles and Data” | — |
| Entry paid plan | $1200/yrBilled annually≈ $100/mo“Premium - Annual” | — |
| Top plan | $150/moBilled monthly“Premium - Monthly” | — |
| Custom / enterprise | Contact sales“IA Professional” | — |
Questions we keep getting
What's the difference between InsideArbitrage and OpenInsider?
InsideArbitrage leans toward news, alerts, and calendar, while OpenInsider puts more weight on insider data, screeners, and data visualizations. They overlap in 3 categories, so for most people it comes down to workflow preference and price.
How much do InsideArbitrage and OpenInsider cost?
Good news: both InsideArbitrage and OpenInsider have free plans, so you can run them side by side and only pay if you hit a wall.
Should I choose InsideArbitrage or OpenInsider?
It depends on what you're after. Pick InsideArbitrage if news and alerts matter to you; go with OpenInsider if you prefer its overall approach. And if you only need the basics both share, let price decide.
What asset classes do InsideArbitrage and OpenInsider cover?
Both cover stocks. InsideArbitrage also handles ETFs. OpenInsider adds closed-end funds on top.
Does InsideArbitrage or OpenInsider have real-time data?
OpenInsider offers real-time data, which matters if you trade actively. InsideArbitrage runs on delayed or end-of-day data, which is perfectly fine for longer-term investors who don't live and die by the tick.
Can I export data from InsideArbitrage and OpenInsider?
OpenInsider exports to CSV. InsideArbitrage is stingier about getting data out.
Which has a better stock screener: InsideArbitrage or OpenInsider?
Both InsideArbitrage and OpenInsider include stock screeners, and they differ more in interface than raw power; try both and see which one clicks for you.
Can I track my portfolio with InsideArbitrage or OpenInsider?
InsideArbitrage handles portfolio tracking. OpenInsider is really a research tool; you'd track your portfolio elsewhere.
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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.