VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Sunday, October 26, 2025

View InsideArbitrage View MarketWatch Home My Collections

Head-to-head

InsideArbitrage vs MarketWatch 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, Dividends, Splits, Institutional Data, 13F, 13D/13G, Regulatory Filings Monitoring, Portfolio, Blogs, Videos, Playbooks & Case Studies, and PDF Annotation coverage that MarketWatch skips.

MarketWatch includes Paper Trading, Financials, Options, ETF Overview, ETF Holdings, Analyst Price Targets, Short Interest, Interest Rates, Yield Curves, and IPO 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)..

MarketWatch is known for: Market data hub with stock and market screeners, mutual fund research, fund comparison, and multi-quote lookup tools., Personal watchlists available free with an account; syncs across web and mobile apps with customizable price and news alerts., and Comprehensive event calendars, including U.S. economic releases, corporate earnings, IPO schedules, and options-expiration dates..

MarketWatch 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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MarketWatch

marketwatch.com

Hands-on review

A global financial-news portal from Dow Jones that combines market data, news, analysis, and investor tools. Real-time Nasdaq last-sale quotes are included, while most other intraday prices run on a standard 15-minute delay. Premium newsletters and in-depth articles are gated behind a subscription. Mobile apps extend the experience with push alerts and watchlist syncing.

Platforms

WebMobile

Pricing

FreeSubscription

Quick highlights

Market data hub with stock and market screeners, mutual fund research, fund comparison, and multi-quote lookup tools.
Personal watchlists available free with an account; syncs across web and mobile apps with customizable price and news alerts.
Comprehensive event calendars, including U.S. economic releases, corporate earnings, IPO schedules, and options-expiration dates.
BigCharts advanced charting platform with multiple timeframes (intraday to monthly) and technical overlays; intraday data typically delayed 15 minutes.
Options coverage with full chains per symbol and an expiration calendar.

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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 Dividends Splits 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.

MarketWatch

Distinct strengths include:

Paper Trading Financials Options ETF Overview ETF Holdings Analyst Price Targets Short Interest Interest Rates

Market data hub with stock and market screeners, mutual fund research, fund comparison, and multi-quote lookup tools.
Personal watchlists available free with an account; syncs across web and mobile apps with customizable price and news alerts.
Comprehensive event calendars, including U.S. economic releases, corporate earnings, IPO schedules, and options-expiration dates.
BigCharts advanced charting platform with multiple timeframes (intraday to monthly) and technical overlays; intraday data typically delayed 15 minutes.

Feature-by-feature breakdown

Attribute	InsideArbitrage	MarketWatch
Categories Which research workflows each platform targets	Shared: News, Alerts, Calendar, Insider Data, Screeners, Data Visualizations, Watchlist, Newsletters Unique: Acquisitions, Spin-offs, Buybacks & Authorizations, Dividends, Splits, Institutional Data, 13F, 13D/13G, Regulatory Filings Monitoring, Portfolio, Blogs, Videos, Playbooks & Case Studies, PDF Annotation	Shared: News, Alerts, Calendar, Insider Data, Screeners, Data Visualizations, Watchlist, Newsletters Unique: Paper Trading, Financials, Options, ETF Overview, ETF Holdings, Analyst Price Targets, Short Interest, Interest Rates, Yield Curves, IPO
Asset types Supported asset classes and universes	Stocks, ETFs	Stocks, ETFs, Mutual Funds, Options, Futures, Commodities, Currencies, Cryptos, Bonds
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 Market data hub with stock and market screeners, mutual fund research, fund comparison, and multi-quote lookup tools. Personal watchlists available free with an account; syncs across web and mobile apps with customizable price and news alerts. Comprehensive event calendars, including U.S. economic releases, corporate earnings, IPO schedules, and options-expiration dates. BigCharts advanced charting platform with multiple timeframes (intraday to monthly) and technical overlays; intraday data typically delayed 15 minutes. Options coverage with full chains per symbol and an expiration calendar. ETF and mutual fund research, including top holdings for flagship funds like SPY and a comparison tool for side-by-side analysis.
Tested Verified by hands-on testing inside Find My Moat	Not yet	Yes
Editor pick Featured inside curated shortlists	Standard listing	Standard listing

Frequently Asked Questions

Which workflows do InsideArbitrage and MarketWatch both support?

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

Do InsideArbitrage and MarketWatch require subscriptions?

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

Which tool has mobile access?

MarketWatch 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 MarketWatch stands out for Market data hub with stock and market screeners, mutual fund research, fund comparison, and multi-quote lookup tools., Personal watchlists available free with an account; syncs across web and mobile apps with customizable price and news alerts., and Comprehensive event calendars, including U.S. economic releases, corporate earnings, IPO schedules, and options-expiration dates..

Keep exploring

Stay on top of related tools

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