VOL. XCIV, NO. 247

★ BEST INVESTING TOOLS COMPARISON ★

Wednesday, June 3, 2026

Tool Comparison · Wednesday, June 3, 2026

InsideArbitrage vs OpenInsider

InsideArbitrage vs OpenInsider: which investing tool fits your workflow? Compare pricing, features, platforms, and verdict in seconds.

Quick verdict
InsideArbitrage logo

InsideArbitrage

insidearbitrage.com

Best for news, and alerts

Pricing
Paid
Platforms
Web
VS
OpenInsider logo

OpenInsider

Pick

openinsider.com

Best for insider data, and screeners

Pricing
Free
Platforms
Web

Outbound links may include affiliate or sponsor codes.

Comparison snapshot

Attribute
InsideArbitrage
OpenInsider
Starting price
Paid
Free
Categories covered
23
3
Web app
Yes
Yes
Mobile app
No
No
API access
No
No
Regions
North America
North America

Who should choose which?

Choose

InsideArbitrage if…

  • You need merger arbitrage tool with announced‑deal lists, spread tracking, calendars and deal updates; ‘deals in the works’ and deal post‑mortems.
  • You need insider data hub with ‘insider weekends’, cluster buys, buys near highs, flip‑floppers, top‑performing insiders and sector heat‑map.
  • You need buyback suite: daily buyback announcements, searchable buyback history, ‘buyback wednesdays’, and ‘double dipper’ (insiders + buybacks).
  • You need spinoff suite: upcoming/completed spinoffs and ‘spinsider’ screen; cvr deals database with outcomes.

Choose

OpenInsider if…

  • You need real-time sec form 4 insider trading screener for insider buying and selling.
  • You need pre-built report pages such as “latest insider purchases”.
  • You need “insider buy-sell charts” page for visualizing insider activity.
  • You need drill-down pages by insider and by industry to view related transactions.

Consider alternatives if…

  • You want broader category coverage in one tool.
  • Neither pricing tier fits your budget.
See alternatives

Side-by-side feature breakdown

AttributeInsideArbitrageOpenInsider
Asset types
StocksETFs
StocksClosed-End Funds
Experience
BeginnerIntermediateAdvanced
BeginnerIntermediateAdvanced
Regions
North America
North America
Data freshness
Real-timeEnd of Day
Real-time
API access
Not specifiedNot specified
Export formats
Not specified
CSV

Seen enough? Open either tool and try it now.

Pricing breakdown

Pricing details

Tool

InsideArbitrage

$100/mo

Starting price

Free tierNo
Free trial

Plans & pricing

Premium – Monthly$150/mo
Premium – Annual$100/mo
IA Professional (4 seats)$400/mo
IA Professional – Annual$300/mo

Tool

OpenInsider

Starting price

Free tierNo
Free trial

Plans & pricing

Pricing not published

Coverage overlap

Shared categories3

Categories where both tools offer overlapping coverage.

Community category leaders

PortfolioInsideArbitrage
WatchlistInsideArbitrage
NewsInsideArbitrage
AlertsInsideArbitrage
DividendsInsideArbitrage
Browse the #1 tool in 90+ categories

Vote sentiment comparison

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Still deciding? Get hands-on with both — most plans offer a free tier or trial.

Frequently Asked Questions

What's the difference between InsideArbitrage and OpenInsider?

InsideArbitrage focuses on News, Alerts, and Calendar while OpenInsider specializes in Insider Data, Screeners, and Data Visualizations. They overlap in 3 categories, so choose based on your preferred workflow and pricing.

How much do InsideArbitrage and OpenInsider cost?

Good news—both InsideArbitrage and OpenInsider offer free plans. You can try each platform without commitment and only pay when you need premium features.

Should I choose InsideArbitrage or OpenInsider?

Choose InsideArbitrage if you need Merger Arbitrage Tool with announced‑deal lists, spread tracking, calendars and deal updates; ‘Deals in the Works’ and deal post‑mortems., and Insider data hub with ‘Insider Weekends’, cluster buys, buys near highs, flip‑floppers, top‑performing insiders and sector heat‑map.. Go with OpenInsider if Real-time SEC Form 4 insider trading screener for insider buying and selling., and Pre-built report pages such as “Latest Insider Purchases”. better fits how you invest.

What asset classes do InsideArbitrage and OpenInsider cover?

Both cover Stocks. InsideArbitrage also includes ETFs. OpenInsider adds coverage for Closed-End Funds.

Do InsideArbitrage and OpenInsider offer real-time data?

Yes, both platforms provide real-time market data. This makes either suitable for active trading strategies where timing matters.

Can I export data from InsideArbitrage and OpenInsider?

OpenInsider supports data exports to CSV. InsideArbitrage has more limited export options.

Which has a better stock screener—InsideArbitrage or OpenInsider?

Both InsideArbitrage and OpenInsider include stock screeners. Try each to see which filtering options and interface you prefer.

Can I track my portfolio with InsideArbitrage or OpenInsider?

InsideArbitrage offers portfolio tracking features. OpenInsider is more focused on research and analysis.

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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.