VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Tuesday, November 18, 2025

Home My Collections

Tool Comparison

InsideArbitrage vs Investment Masters Class (MastersInvest.com) comparison

Compare pricing, supported platforms, categories, and standout capabilities to decide which tool fits your workflow.

Quick takeaways

InsideArbitrage adds News, Alerts, Calendar, Acquisitions, Spin-offs, Buybacks & Authorizations, Dividends, Splits, Insider Data, Institutional Data, 13F, 13D/13G, Regulatory Filings Monitoring, Screeners, Data Visualizations, Portfolio, Watchlist, Videos, and PDF Annotation coverage that Investment Masters Class (MastersInvest.com) skips.

Investment Masters Class (MastersInvest.com) includes Education categories that InsideArbitrage omits.

In depth comparison

InsideArbitrage logo

InsideArbitrage

insidearbitrage.com

Event‑driven research platform by Asif Suria focused on merger arbitrage, insider transactions, spinoffs, buybacks, activists, and related special situations. Premium includes tools like the Merger Arbitrage Tool, CVR database, buyback & spinoff trackers, premium screens (IA Score, cluster buys, ‘double dipper’), ‘Deals‑in‑the‑Works’ and deal calendars. IA Professional adds pro‑only features (e.g., CVR outcomes, activist tracker, reverse‑splits tracker, Insider Performance Score) and multi‑seat licensing.

Platforms

Web

Pricing

FreeSubscription

Quick highlights

  • Merger Arbitrage Tool with announced‑deal lists, spread tracking, calendars and deal updates; ‘Deals in the Works’ and deal post‑mortems.
  • Insider data hub with ‘Insider Weekends’, cluster buys, buys near highs, flip‑floppers, top‑performing insiders and sector heat‑map.
  • Buyback suite: daily buyback announcements, searchable buyback history, ‘Buyback Wednesdays’, and ‘Double Dipper’ (insiders + buybacks).
  • Spinoff suite: upcoming/completed spinoffs and ‘Spinsider’ screen; CVR deals database with outcomes.
  • Gurus/Institutional holdings pages aggregating 13F/13D/13G and Form 4 into manager dashboards.

Community votes (overall)

0% upvotes 0% downvotes
You haven't voted yet
View full profileVisit site
Investment Masters Class (MastersInvest.com) logo

Investment Masters Class (MastersInvest.com)

mastersinvest.com

A free educational resource offering tutorials, curated reading, and essays on timeless lessons from great investors. Includes a blog and newsletter sign-up. All content is informational and intended to inspire better investing habits — not financial advice.

Platforms

Web

Pricing

Free

Quick highlights

  • A library of 100 structured tutorials covering core concepts such as compounding, moats, margin of safety, position sizing, and investment checklists.
  • Regularly updated blog essays distilling insights from legendary investors, CEOs, and business leaders.
  • The “Masters Bookshelf,” a curated reading list spanning investing, history, psychology, and business classics.
  • Investor Letters hub linking directly to primary sources like Buffett, Li Lu, and Lindsell Train.
  • Profiles of notable investors, summarizing their philosophies, strategies, and biggest lessons.

Community votes (overall)

0% upvotes 0% downvotes
You haven't voted yet
View full profileVisit site

Where they differ

InsideArbitrage

Distinct strengths include:

NewsAlertsCalendarAcquisitionsSpin-offsBuybacks & AuthorizationsDividendsSplits
  • Merger Arbitrage Tool with announced‑deal lists, spread tracking, calendars and deal updates; ‘Deals in the Works’ and deal post‑mortems.
  • Insider data hub with ‘Insider Weekends’, cluster buys, buys near highs, flip‑floppers, top‑performing insiders and sector heat‑map.
  • Buyback suite: daily buyback announcements, searchable buyback history, ‘Buyback Wednesdays’, and ‘Double Dipper’ (insiders + buybacks).
  • Spinoff suite: upcoming/completed spinoffs and ‘Spinsider’ screen; CVR deals database with outcomes.

Investment Masters Class (MastersInvest.com)

Distinct strengths include:

Education
  • A library of 100 structured tutorials covering core concepts such as compounding, moats, margin of safety, position sizing, and investment checklists.
  • Regularly updated blog essays distilling insights from legendary investors, CEOs, and business leaders.
  • The “Masters Bookshelf,” a curated reading list spanning investing, history, psychology, and business classics.
  • Investor Letters hub linking directly to primary sources like Buffett, Li Lu, and Lindsell Train.

Feature-by-feature breakdown

AttributeInsideArbitrageInvestment Masters Class (MastersInvest.com)
Categories

Which research workflows each platform targets

Shared: Blogs, Newsletters, Playbooks & Case Studies

Unique: News, Alerts, Calendar, Acquisitions, Spin-offs, Buybacks & Authorizations, Dividends, Splits, Insider Data, Institutional Data, 13F, 13D/13G, Regulatory Filings Monitoring, Screeners, Data Visualizations, Portfolio, Watchlist, Videos, PDF Annotation

Shared: Blogs, Newsletters, Playbooks & Case Studies

Unique: Education

Asset types

Supported asset classes and universes

Stocks, ETFs

Other

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, Subscription

Free

Key features

Core capabilities called out by each vendor

Unique

  • Merger Arbitrage Tool with announced‑deal lists, spread tracking, calendars and deal updates; ‘Deals in the Works’ and deal post‑mortems.
  • Insider data hub with ‘Insider Weekends’, cluster buys, buys near highs, flip‑floppers, top‑performing insiders and sector heat‑map.
  • Buyback suite: daily buyback announcements, searchable buyback history, ‘Buyback Wednesdays’, and ‘Double Dipper’ (insiders + buybacks).
  • Spinoff suite: upcoming/completed spinoffs and ‘Spinsider’ screen; CVR deals database with outcomes.
  • Gurus/Institutional holdings pages aggregating 13F/13D/13G and Form 4 into manager dashboards.
  • Event‑driven monitor & M&A news feed; earnings calendar; tender‑offers tracker; activist‑campaign tracker; C‑suite transitions tool.

Unique

  • A library of 100 structured tutorials covering core concepts such as compounding, moats, margin of safety, position sizing, and investment checklists.
  • Regularly updated blog essays distilling insights from legendary investors, CEOs, and business leaders.
  • The “Masters Bookshelf,” a curated reading list spanning investing, history, psychology, and business classics.
  • Investor Letters hub linking directly to primary sources like Buffett, Li Lu, and Lindsell Train.
  • Profiles of notable investors, summarizing their philosophies, strategies, and biggest lessons.
  • Free email subscription (“ENROL”) to receive blog posts, book reviews, and thematic insights.
Tested

Verified by hands-on testing inside Find My Moat

Not yet

Not yet

Editor pick

Featured inside curated shortlists

Standard listing

Standard listing

Frequently Asked Questions

Which workflows do InsideArbitrage and Investment Masters Class (MastersInvest.com) both support?

Both platforms cover Blogs, Newsletters, and Playbooks & Case Studies workflows, so you can research those use cases in either tool before digging into the feature differences below.

Do InsideArbitrage and Investment Masters Class (MastersInvest.com) require subscriptions?

Both InsideArbitrage and Investment Masters Class (MastersInvest.com) keep freemium access with optional paid upgrades, so you can trial each platform before committing.

How can you access InsideArbitrage and Investment Masters Class (MastersInvest.com)?

Both InsideArbitrage and Investment Masters Class (MastersInvest.com) 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?

InsideArbitrage differentiates itself with Merger Arbitrage Tool with announced‑deal lists, spread tracking, calendars and deal updates; ‘Deals in the Works’ and deal post‑mortems., Insider data hub with ‘Insider Weekends’, cluster buys, buys near highs, flip‑floppers, top‑performing insiders and sector heat‑map., and Buyback suite: daily buyback announcements, searchable buyback history, ‘Buyback Wednesdays’, and ‘Double Dipper’ (insiders + buybacks)., whereas Investment Masters Class (MastersInvest.com) stands out for A library of 100 structured tutorials covering core concepts such as compounding, moats, margin of safety, position sizing, and investment checklists., Regularly updated blog essays distilling insights from legendary investors, CEOs, and business leaders., and The “Masters Bookshelf,” a curated reading list spanning investing, history, psychology, and business classics..

Keep exploring

Keep exploring

Stay on top of related tools

Browse the categories and profiles that overlap most with this comparison to round out your shortlist.

Recommended tools

These profiles share overlapping coverage with both sides of this matchup.

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.