VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Tuesday, November 18, 2025

Tool Comparison

InsideArbitrage vs The Zen of Investing comparison

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

Quick takeaways

InsideArbitrage adds News, Alerts, Acquisitions, Buybacks & Authorizations, Dividends, Splits, Insider Data, Institutional Data, 13F, 13D/13G, Regulatory Filings Monitoring, Screeners, Data Visualizations, Portfolio, Watchlist, Newsletters, Videos, Playbooks & Case Studies, and PDF Annotation coverage that The Zen of Investing skips.

In depth comparison

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.

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The Zen of Investing

thezenofinvesting.com

A free, niche site dedicated to spinoffs and special situations. It maintains curated lists of upcoming and recent spinoffs, often linking directly to investor decks, prospectuses, and filings. The site also offers RSS feeds for SEC prospectus and tender-offer filings, making it a useful resource for event-driven investors. No subscriptions, paywalls, or API access are offered.

Platforms

Web

Pricing

Free

Quick highlights

Covers U.S. spinoffs and select international cases, with a clear focus on special situations.
“Upcoming Spinoffs” list tracks definitively announced events, often with links to presentations and filings.
“Recent Spinoffs” page compiles completed transactions, including prospectuses and investor decks.
Archives investor-relations PDFs from major spinoff companies, such as DuPont or GE Vernova.
Publishes RSS feeds that surface SEC prospectus and tender-offer filings for easy monitoring.

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Where they differ

InsideArbitrage

Distinct strengths include:

News Alerts Acquisitions Buybacks & Authorizations Dividends Splits Insider Data Institutional Data

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.

Feature-by-feature breakdown

Attribute	InsideArbitrage	The Zen of Investing
Categories Which research workflows each platform targets	Shared: Calendar, Spin-offs, Blogs Unique: News, Alerts, Acquisitions, Buybacks & Authorizations, Dividends, Splits, Insider Data, Institutional Data, 13F, 13D/13G, Regulatory Filings Monitoring, Screeners, Data Visualizations, Portfolio, Watchlist, Newsletters, Videos, Playbooks & Case Studies, PDF Annotation	Shared: Calendar, Spin-offs, Blogs
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, 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 Covers U.S. spinoffs and select international cases, with a clear focus on special situations. “Upcoming Spinoffs” list tracks definitively announced events, often with links to presentations and filings. “Recent Spinoffs” page compiles completed transactions, including prospectuses and investor decks. Archives investor-relations PDFs from major spinoff companies, such as DuPont or GE Vernova. Publishes RSS feeds that surface SEC prospectus and tender-offer filings for easy monitoring. Simple, free access with a contact form for inquiries; no paid plans or gated features.
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 The Zen of Investing both support?

Both platforms cover Calendar, Spin-offs, and Blogs workflows, so you can research those use cases in either tool before digging into the feature differences below.

Do InsideArbitrage and The Zen of Investing require subscriptions?

Both InsideArbitrage and The Zen of Investing keep freemium access with optional paid upgrades, so you can trial each platform before committing.

How can you access InsideArbitrage and The Zen of Investing?

Both InsideArbitrage and The Zen of Investing 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 The Zen of Investing stands out for Covers U.S. spinoffs and select international cases, with a clear focus on special situations., “Upcoming Spinoffs” list tracks definitively announced events, often with links to presentations and filings., and “Recent Spinoffs” page compiles completed transactions, including prospectuses and investor decks..

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