InsideArbitrage adds Alerts, Calendar, Acquisitions, Spin-offs, Buybacks & Authorizations, Dividends, Splits, Insider Data, 13D/13G, Regulatory Filings Monitoring, Data Visualizations, Portfolio, Watchlist, Newsletters, Videos, Playbooks & Case Studies, and PDF Annotation coverage that Valuesider skips.
VOL. XCIV, NO. 247
★ FINANCIAL TOOLS & SERVICES DIRECTORY ★
PRICE: 5 CENTS
Friday, October 31, 2025
Tool Comparison
InsideArbitrage vs Valuesider comparison
Compare pricing, supported platforms, categories, and standout capabilities to decide which tool fits your workflow.
Quick takeaways
Valuesider includes Investor Holdings categories that InsideArbitrage omits.
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.
Categories
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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Valuesider
valuesider.com
Free, 13F‑based ‘super‑investor’ explorer with two screeners (holdings & activity), per‑investor portfolios, per‑ticker ownership/activity pages, and basic news feeds. Exports to CSV/XLS/XLSX; provides embeddable charts. Transparent about 13F caveats (delay, options/bonds coverage limits) and split adjustments; includes direct SEC report links for verification.
Platforms
Web
Pricing
Free
Quick highlights
- Super‑investor hub: browse portfolios of well‑known value investors (Buffett, Ackman, Klarman, etc.) with top holdings and recent activity.
- Holdings Screener (free): filter by % of grand portfolio, # of gurus, security type, values, and more; export CSV/XLS/XLSX.
- Activity Screener (free): filter buys/sells by period (last Q, last 2/4 Qs or latest N reports) and by security type; export CSV/XLS/XLSX.
- Per‑ticker ‘Ownership’ & ‘Activity’ pages that aggregate which gurus hold or changed a position.
- Embeddable historical ownership charts for tickers (auto‑updating ‘Top holders’ widget).
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Where they differ
InsideArbitrage
Distinct strengths include:
- 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.
Valuesider
Distinct strengths include:
- Super‑investor hub: browse portfolios of well‑known value investors (Buffett, Ackman, Klarman, etc.) with top holdings and recent activity.
- Holdings Screener (free): filter by % of grand portfolio, # of gurus, security type, values, and more; export CSV/XLS/XLSX.
- Activity Screener (free): filter buys/sells by period (last Q, last 2/4 Qs or latest N reports) and by security type; export CSV/XLS/XLSX.
- Per‑ticker ‘Ownership’ & ‘Activity’ pages that aggregate which gurus hold or changed a position.
Feature-by-feature breakdown
| Attribute | InsideArbitrage | Valuesider |
|---|---|---|
Categories Which research workflows each platform targets | Shared: News, Institutional Data, 13F, Screeners, Blogs Unique: Alerts, Calendar, Acquisitions, Spin-offs, Buybacks & Authorizations, Dividends, Splits, Insider Data, 13D/13G, Regulatory Filings Monitoring, Data Visualizations, Portfolio, Watchlist, Newsletters, Videos, Playbooks & Case Studies, PDF Annotation | Shared: News, Institutional Data, 13F, Screeners, Blogs Unique: Investor Holdings |
Asset types Supported asset classes and universes | Stocks, ETFs | Stocks, ETFs |
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
| Unique
|
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 Valuesider both support?
Both platforms cover News, Institutional Data, 13F, Screeners, and Blogs workflows, so you can research those use cases in either tool before digging into the feature differences below.
Do InsideArbitrage and Valuesider require subscriptions?
Both InsideArbitrage and Valuesider keep freemium access with optional paid upgrades, so you can trial each platform before committing.
How can you access InsideArbitrage and Valuesider?
Both InsideArbitrage and Valuesider 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 Valuesider stands out for Super‑investor hub: browse portfolios of well‑known value investors (Buffett, Ackman, Klarman, etc.) with top holdings and recent activity., Holdings Screener (free): filter by % of grand portfolio, # of gurus, security type, values, and more; export CSV/XLS/XLSX., and Activity Screener (free): filter buys/sells by period (last Q, last 2/4 Qs or latest N reports) and by security type; export CSV/XLS/XLSX..
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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.