VOL. XCIV, NO. 247

★ A CURATED DIRECTORY OF FINANCIAL TOOLS ★

PRICE: 5 CENTS

Thursday, December 11, 2025

Tool Comparison

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, Insider Data, Institutional Data, 13F, 13D/13G, Regulatory Filings Monitoring, Newsletters, Playbooks & Case Studies, and PDF Annotation coverage that Koyfin skips.

Koyfin includes ETF Screeners, Stock Comparison, Money Flow, Backtesting, Yield Curves, GDP, Interest Rates, Inflation Rates, Unemployment Rates, Financials, ETF Overview, ETF Performance, ETF Holdings, ETF Fundamentals, ETF Valuation, Analyst Forecasts, Analyst Recommendations, Analyst Price Targets, Transcripts, Education, and Custom Dashboards categories that InsideArbitrage omits.

Koyfin offers mobile access, which InsideArbitrage 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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Koyfin

koyfin.com

Editor’s pick Hands-on review

Multi‑asset web and mobile analytics terminal for global markets. Free plan includes My Portfolios, short financial history and a small number of watchlists/screens/dashboards. Plus unlocks long‑history financials & estimates, ETF holdings, stock/ETF screeners and full news/filings/transcripts. Premium adds advanced My Portfolio analytics, unlimited custom data & formulas and ETF valuation. Advisor Core/Pro add model & client portfolios, mutual fund data & screeners, client proposals/reports and custodian/PMS integrations (with more integrations, short/leveraged models, PDF statement upload and custom report pages on Advisor Pro). No public data API; downloads are limited to non‑fundamental data by vendor licensing.

Platforms

WebMobile

Pricing

FreeSubscription

Quick highlights

Global multi‑asset data terminal covering equities, ETFs, mutual funds, indices, government bond yields, FX, commodities, cryptocurrencies, news, transcripts and global economics in one interface, with financials, margins, consensus estimates and valuation ratios for all global stocks.
Combination of live, 15‑minute delayed and end‑of‑day pricing: live/15‑minute delayed US equities & ETFs, 15‑minute delayed Canadian equities, end‑of‑day prices for other equity markets, live FX for ~60 pairs and bitcoin, plus live bond yields for 45 countries and yield curves for 20 countries.
Customizable watchlists, dashboards and macro dashboards with table views, historical graphs and scatter charts so you can monitor price, valuation, technicals, news and macro series in a single workspace.
Equity, ETF and mutual fund screeners with thousands of filter criteria, percentile ranks, description search operators and saved “My Screens” views for repeatable idea generation.
Company and fund research including financial statement review, dividend and earnings history snapshots, ETF and mutual fund holdings, valuation metrics and percentile ranks, plus analyst estimates, forecasts, ratings and price targets powered by S&P Capital IQ.

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Where they differ

InsideArbitrage

Distinct strengths include:

Acquisitions Spin-offs Buybacks & Authorizations Insider Data Institutional Data 13F 13D/13G Regulatory Filings Monitoring

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 Stock Comparison Money Flow Backtesting Yield Curves GDP Interest Rates Inflation Rates

Global multi‑asset data terminal covering equities, ETFs, mutual funds, indices, government bond yields, FX, commodities, cryptocurrencies, news, transcripts and global economics in one interface, with financials, margins, consensus estimates and valuation ratios for all global stocks.
Combination of live, 15‑minute delayed and end‑of‑day pricing: live/15‑minute delayed US equities & ETFs, 15‑minute delayed Canadian equities, end‑of‑day prices for other equity markets, live FX for ~60 pairs and bitcoin, plus live bond yields for 45 countries and yield curves for 20 countries.
Customizable watchlists, dashboards and macro dashboards with table views, historical graphs and scatter charts so you can monitor price, valuation, technicals, news and macro series in a single workspace.
Equity, ETF and mutual fund screeners with thousands of filter criteria, percentile ranks, description search operators and saved “My Screens” views for repeatable idea generation.

Feature-by-feature breakdown

Attribute	InsideArbitrage	Koyfin
Categories Which research workflows each platform targets	Shared: News, Alerts, Calendar, Dividends, Splits, Screeners, Data Visualizations, Portfolio, Watchlist, Blogs, Videos Unique: Acquisitions, Spin-offs, Buybacks & Authorizations, Insider Data, Institutional Data, 13F, 13D/13G, Regulatory Filings Monitoring, Newsletters, Playbooks & Case Studies, PDF Annotation	Shared: News, Alerts, Calendar, Dividends, Splits, Screeners, Data Visualizations, Portfolio, Watchlist, Blogs, Videos Unique: ETF Screeners, Stock Comparison, Money Flow, Backtesting, Yield Curves, GDP, Interest Rates, Inflation Rates, Unemployment Rates, Financials, ETF Overview, ETF Performance, ETF Holdings, ETF Fundamentals, ETF Valuation, Analyst Forecasts, Analyst Recommendations, Analyst Price Targets, Transcripts, Education, Custom Dashboards
Asset types Supported asset classes and universes	Stocks, ETFs	Stocks, ETFs, Mutual Funds, Closed-End Funds, Bonds, Commodities, Currencies, Cryptos, Futures, Funds
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 Global multi‑asset data terminal covering equities, ETFs, mutual funds, indices, government bond yields, FX, commodities, cryptocurrencies, news, transcripts and global economics in one interface, with financials, margins, consensus estimates and valuation ratios for all global stocks. Combination of live, 15‑minute delayed and end‑of‑day pricing: live/15‑minute delayed US equities & ETFs, 15‑minute delayed Canadian equities, end‑of‑day prices for other equity markets, live FX for ~60 pairs and bitcoin, plus live bond yields for 45 countries and yield curves for 20 countries. Customizable watchlists, dashboards and macro dashboards with table views, historical graphs and scatter charts so you can monitor price, valuation, technicals, news and macro series in a single workspace. Equity, ETF and mutual fund screeners with thousands of filter criteria, percentile ranks, description search operators and saved “My Screens” views for repeatable idea generation. Company and fund research including financial statement review, dividend and earnings history snapshots, ETF and mutual fund holdings, valuation metrics and percentile ranks, plus analyst estimates, forecasts, ratings and price targets powered by S&P Capital IQ. Portfolio workflows: watchlist‑based portfolio tracking, a dedicated My Portfolio module with multi‑account and lot‑level P&L (including FX‑adjusted returns), model portfolios, client portfolios, portfolio exposure snapshots and dedicated earnings/news feeds tied to holdings.
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, Splits, Screeners, Data Visualizations, Portfolio, Watchlist, Blogs, and Videos 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 Global multi‑asset data terminal covering equities, ETFs, mutual funds, indices, government bond yields, FX, commodities, cryptocurrencies, news, transcripts and global economics in one interface, with financials, margins, consensus estimates and valuation ratios for all global stocks., Combination of live, 15‑minute delayed and end‑of‑day pricing: live/15‑minute delayed US equities & ETFs, 15‑minute delayed Canadian equities, end‑of‑day prices for other equity markets, live FX for ~60 pairs and bitcoin, plus live bond yields for 45 countries and yield curves for 20 countries., and Customizable watchlists, dashboards and macro dashboards with table views, historical graphs and scatter charts so you can monitor price, valuation, technicals, news and macro series in a single workspace..

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