VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Tuesday, October 28, 2025

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Tool Comparison

CatalystWire vs Valuesider comparison

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

Quick takeaways

CatalystWire adds Regulatory Filings Monitoring coverage that Valuesider skips.

Valuesider includes Screeners, Institutional Data, 13F, Investor Holdings, and Blogs categories that CatalystWire omits.

Valuesider keeps a free entry point that CatalystWire lacks.

In depth comparison

CatalystWire logo

CatalystWire

catalystwire.co

RNS-first discovery tool for UK equities. Uses AI to scan and categorize London Stock Exchange RNS announcements in real time (e.g., management changes, turnarounds). Best suited to event‑driven and small/mid‑cap investors tracking UK market catalysts. Public docs do not show a pricing table or API; fields left intentionally minimal pending vendor confirmation.

Platforms

Web

Pricing

Subscription

Quick highlights

  • AI scanning of hundreds of RNS announcements per day to surface potential catalysts.
  • Real‑time classification of market‑moving events as they are released.
  • UK‑centric focus aligned to LSE’s Regulatory News Service (Main Market & AIM).

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Valuesider logo

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

CatalystWire

Distinct strengths include:

Regulatory Filings Monitoring
  • AI scanning of hundreds of RNS announcements per day to surface potential catalysts.
  • Real‑time classification of market‑moving events as they are released.
  • UK‑centric focus aligned to LSE’s Regulatory News Service (Main Market & AIM).

Valuesider

Distinct strengths include:

ScreenersInstitutional Data13FInvestor HoldingsBlogs
  • 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

AttributeCatalystWireValuesider
Categories

Which research workflows each platform targets

Shared: News

Unique: Regulatory Filings Monitoring

Shared: News

Unique: Screeners, Institutional Data, 13F, Investor Holdings, Blogs

Asset types

Supported asset classes and universes

Stocks

Stocks, ETFs

Experience levels

Who each product is built for

Intermediate, Advanced

Beginner, Intermediate, Advanced

Platforms

Where you can access the product

Web

Web

Pricing

High-level pricing models

Subscription

Free

Key features

Core capabilities called out by each vendor

Unique

  • AI scanning of hundreds of RNS announcements per day to surface potential catalysts.
  • Real‑time classification of market‑moving events as they are released.
  • UK‑centric focus aligned to LSE’s Regulatory News Service (Main Market & AIM).

Unique

  • 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).
  • Per‑ticker news pages that consolidate recent headlines.
Tested

Verified by hands-on testing inside Find My Moat

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Featured inside curated shortlists

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Frequently Asked Questions

Which workflows do CatalystWire and Valuesider both support?

Both platforms cover News workflows, so you can research those use cases in either tool before digging into the feature differences below.

Which tool offers a free plan?

Valuesider offers a free entry point, while CatalystWire requires a paid subscription. Review the pricing table to see how the paid tiers compare.

How can you access CatalystWire and Valuesider?

Both CatalystWire 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?

CatalystWire differentiates itself with AI scanning of hundreds of RNS announcements per day to surface potential catalysts., Real‑time classification of market‑moving events as they are released., and UK‑centric focus aligned to LSE’s Regulatory News Service (Main Market & AIM)., 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..

Keep exploring

Keep exploring

Stay on top of related tools

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

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.