VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Monday, October 27, 2025

View InsideArbitrage View Koyfin Home My Collections

Head-to-head

InsideArbitrage vs Koyfin comparison

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

Quick takeaways

InsideArbitrage adds Acquisitions, Spin-offs, Buybacks & Authorizations, Splits, Insider Data, Institutional Data, 13F, 13D/13G, Regulatory Filings Monitoring, Blogs, Newsletters, Videos, Playbooks & Case Studies, and PDF Annotation coverage that Koyfin skips.

Koyfin includes ETF Screeners, Financials, Transcripts, ETF Overview, ETF Performance, ETF Holdings, ETF Overlap, ETF Fundamentals, ETF Valuation, and Short Interest categories that InsideArbitrage omits.

InsideArbitrage 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., and Buyback suite: daily buyback announcements, searchable buyback history, ‘Buyback Wednesdays’, and ‘Double Dipper’ (insiders + buybacks)..

Koyfin is known for: Plan tiers: Free, Plus ($39/mo), Premium ($79/mo), Advisor Core ($209/mo), and Advisor Pro ($299/mo), with a published plan comparison., Global equities coverage with prices, financial statements, valuation, analyst estimates, filings, news, and transcripts. US quotes are live or 15-minute delayed, Canadian quotes are 15-minute delayed, and most international markets are end-of-day., and Stock Screener covering ~100,000 global equities with nearly 6,000 filter criteria. Results can be saved to watchlists or exported to CSV, though some data exports are restricted..

Koyfin offers mobile access, which InsideArbitrage skips.

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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Koyfin

koyfin.com

Editor’s pick Hands-on review

Global market analytics platform combining screeners, financials, charting, news, and portfolio tools. US equity data is a mix of live and 15-minute delayed quotes, Canada is delayed 15 minutes, and other markets are end-of-day. CSV exports are available, but certain fields such as detailed financials and analyst estimates are restricted. Advisor plans add client portfolio management, custodian integrations, and professional reporting. Options functionality is announced but not yet live.

Platforms

WebMobile

Pricing

FreeSubscription

Quick highlights

Plan tiers: Free, Plus ($39/mo), Premium ($79/mo), Advisor Core ($209/mo), and Advisor Pro ($299/mo), with a published plan comparison.
Global equities coverage with prices, financial statements, valuation, analyst estimates, filings, news, and transcripts. US quotes are live or 15-minute delayed, Canadian quotes are 15-minute delayed, and most international markets are end-of-day.
Stock Screener covering ~100,000 global equities with nearly 6,000 filter criteria. Results can be saved to watchlists or exported to CSV, though some data exports are restricted.
Custom Formulas & Calculations for table columns. Limits vary by plan: Free (1), Plus (up to 10), Premium (unlimited).
Mobile apps for iOS and Android with synced watchlists, price alerts, and access to core features.

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Overlap

Shared focus areas

8 overlaps

Mutual strengths include News, Alerts, and Calendar plus 5 more areas.

Where they differ

InsideArbitrage

Distinct strengths include:

Acquisitions Spin-offs Buybacks & Authorizations Splits Insider Data Institutional Data 13F 13D/13G

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.

Koyfin

Distinct strengths include:

ETF Screeners Financials Transcripts ETF Overview ETF Performance ETF Holdings ETF Overlap ETF Fundamentals

Plan tiers: Free, Plus ($39/mo), Premium ($79/mo), Advisor Core ($209/mo), and Advisor Pro ($299/mo), with a published plan comparison.
Global equities coverage with prices, financial statements, valuation, analyst estimates, filings, news, and transcripts. US quotes are live or 15-minute delayed, Canadian quotes are 15-minute delayed, and most international markets are end-of-day.
Stock Screener covering ~100,000 global equities with nearly 6,000 filter criteria. Results can be saved to watchlists or exported to CSV, though some data exports are restricted.
Custom Formulas & Calculations for table columns. Limits vary by plan: Free (1), Plus (up to 10), Premium (unlimited).

Feature-by-feature breakdown

Attribute	InsideArbitrage	Koyfin
Categories Which research workflows each platform targets	Shared: News, Alerts, Calendar, Dividends, Screeners, Data Visualizations, Portfolio, Watchlist Unique: Acquisitions, Spin-offs, Buybacks & Authorizations, Splits, Insider Data, Institutional Data, 13F, 13D/13G, Regulatory Filings Monitoring, Blogs, Newsletters, Videos, Playbooks & Case Studies, PDF Annotation	Shared: News, Alerts, Calendar, Dividends, Screeners, Data Visualizations, Portfolio, Watchlist Unique: ETF Screeners, Financials, Transcripts, ETF Overview, ETF Performance, ETF Holdings, ETF Overlap, ETF Fundamentals, ETF Valuation, Short Interest
Asset types Supported asset classes and universes	Stocks, ETFs	Stocks, ETFs, Mutual Funds, Closed-End Funds, Bonds, Commodities, Currencies, Cryptos
Experience levels Who each product is built for	Beginner, Intermediate, Advanced	Beginner, Intermediate, Advanced
Platforms Where you can access the product	Web	Web, Mobile
Pricing High-level pricing models	Free, Subscription	Free, Subscription
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 Plan tiers: Free, Plus ($39/mo), Premium ($79/mo), Advisor Core ($209/mo), and Advisor Pro ($299/mo), with a published plan comparison. Global equities coverage with prices, financial statements, valuation, analyst estimates, filings, news, and transcripts. US quotes are live or 15-minute delayed, Canadian quotes are 15-minute delayed, and most international markets are end-of-day. Stock Screener covering ~100,000 global equities with nearly 6,000 filter criteria. Results can be saved to watchlists or exported to CSV, though some data exports are restricted. Custom Formulas & Calculations for table columns. Limits vary by plan: Free (1), Plus (up to 10), Premium (unlimited). Mobile apps for iOS and Android with synced watchlists, price alerts, and access to core features. Portfolio and Model Portfolios with analytics including performance, drawdown, beta, and correlations. Advisor plans include client-ready PDF reports with tiered monthly limits.
Tested Verified by hands-on testing inside Find My Moat	Not yet	Yes
Editor pick Featured inside curated shortlists	Standard listing	Highlighted

Frequently Asked Questions

Which workflows do InsideArbitrage and Koyfin both support?

Both platforms cover News, Alerts, Calendar, Dividends, Screeners, Data Visualizations, Portfolio, and Watchlist workflows, so you can research those use cases in either tool before digging into the feature differences below.

Do InsideArbitrage and Koyfin require subscriptions?

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

Which tool has mobile access?

Koyfin ships a dedicated mobile experience, while InsideArbitrage focuses on web or desktop access.

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 Koyfin stands out for Plan tiers: Free, Plus ($39/mo), Premium ($79/mo), Advisor Core ($209/mo), and Advisor Pro ($299/mo), with a published plan comparison., Global equities coverage with prices, financial statements, valuation, analyst estimates, filings, news, and transcripts. US quotes are live or 15-minute delayed, Canadian quotes are 15-minute delayed, and most international markets are end-of-day., and Stock Screener covering ~100,000 global equities with nearly 6,000 filter criteria. Results can be saved to watchlists or exported to CSV, though some data exports are restricted..

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