VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Sunday, October 19, 2025

View CatalystWireView PCAOB AuditorSearch Home My Collections

Head-to-head

CatalystWire vs PCAOB AuditorSearch comparison

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

Quick takeaways

CatalystWire adds News coverage that PCAOB AuditorSearch skips.

CatalystWire 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., and UK‑centric focus aligned to LSE’s Regulatory News Service (Main Market & AIM)..

PCAOB AuditorSearch is known for: Searchable by engagement partner, audit firm, or public company, with support for company name, CIK, ticker, and firm identifiers., Displays engagement partner details, audit firm name and location, and the extent of participation of other firms., and Bulk dataset download in CSV format, updated daily. The file includes all Form AP data fields documented in the dictionary, with timestamps in Eastern Time..

PCAOB AuditorSearch keeps a free entry point that CatalystWire lacks.

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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PCAOB AuditorSearch logo

PCAOB AuditorSearch

pcaobus.org

Free public database built from Form AP filings. Users can search audit engagements by company, firm, or partner, or download the full dataset as a CSV file updated daily. Bulk downloads are timestamped in Eastern Time and do not include the ticker field.

Platforms

Web

Pricing

Free

Quick highlights

  • Searchable by engagement partner, audit firm, or public company, with support for company name, CIK, ticker, and firm identifiers.
  • Displays engagement partner details, audit firm name and location, and the extent of participation of other firms.
  • Bulk dataset download in CSV format, updated daily. The file includes all Form AP data fields documented in the dictionary, with timestamps in Eastern Time.
  • Form AP filings are required for each audit of a public company, forming the core of the database.
  • Advanced search tools and a contact form are available for deeper queries and user support.

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Overlap

Shared focus areas

1 overlap

Both tools cover this research theme.

Where they differ

CatalystWire

Distinct strengths include:

News
  • 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).

Feature-by-feature breakdown

AttributeCatalystWirePCAOB AuditorSearch
Categories

Which research workflows each platform targets

Shared: Regulatory Filings Monitoring

Unique: News

Shared: Regulatory Filings Monitoring

Asset types

Supported asset classes and universes

Stocks

Other

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

  • Searchable by engagement partner, audit firm, or public company, with support for company name, CIK, ticker, and firm identifiers.
  • Displays engagement partner details, audit firm name and location, and the extent of participation of other firms.
  • Bulk dataset download in CSV format, updated daily. The file includes all Form AP data fields documented in the dictionary, with timestamps in Eastern Time.
  • Form AP filings are required for each audit of a public company, forming the core of the database.
  • Advanced search tools and a contact form are available for deeper queries and user support.
Tested

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Frequently Asked Questions

Which workflows do CatalystWire and PCAOB AuditorSearch both support?

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

Which tool offers a free plan?

PCAOB AuditorSearch 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 PCAOB AuditorSearch?

Both CatalystWire and PCAOB AuditorSearch 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 PCAOB AuditorSearch stands out for Searchable by engagement partner, audit firm, or public company, with support for company name, CIK, ticker, and firm identifiers., Displays engagement partner details, audit firm name and location, and the extent of participation of other firms., and Bulk dataset download in CSV format, updated daily. The file includes all Form AP data fields documented in the dictionary, with timestamps in Eastern Time..

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.