VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Sunday, October 5, 2025

View Corner of Berkshire & Fairfax (COBF)View ETF Action Back to Home

Head-to-head

Corner of Berkshire & Fairfax (COBF) vs ETF Action comparison

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

Quick takeaways

Corner of Berkshire & Fairfax (COBF) adds Forums coverage that ETF Action skips.

ETF Action includes ETF Overview, ETF Performance, ETF Holdings, ETF Fundamentals, ETF Valuation, ETF Factors, ETF Overlap, Screeners, Data Visualizations, Portfolio, Watchlist, Backtesting, 13F, Data APIs, Alerts, and Videos categories that Corner of Berkshire & Fairfax (COBF) omits.

Corner of Berkshire & Fairfax (COBF) highlights: Public discussion boards focused on Berkshire Hathaway, Fairfax Financial, general investing, books, and broader market conversations., Members-only sections covering investment ideas, personal finance, strategies, real estate, wealth management, events, and more., and One-time lifetime membership fee of $49.99 USD, available through the site’s shop..

ETF Action is known for: Global ETF ‘Channels’ taxonomy with category reports and dashboards (Size & Style US/Global, Region & Country, Sector & Industry, Thematic, Fixed Income, Non‑Traditional, Commodities, Crypto)., Look‑through analytics on fund holdings for factor/style, sector/industry, country, concentration; portfolio overlap analysis across funds or entire models., and Flows & trading dashboards (volumes/ADV); flows noted as T+1 timing in daily updates..

Corner of Berkshire & Fairfax (COBF)

thecobf.com

A long-standing value-investing forum founded in 2009, with public boards and members-only sections. Membership is a one-time lifetime fee of $49.99, purchased through the site’s shop. The community hosts thousands of investors, with active discussions, member-submitted articles, and dedicated rooms for deeper collaboration.

Platforms

Web

Pricing

Free

One-time

Quick highlights

Public discussion boards focused on Berkshire Hathaway, Fairfax Financial, general investing, books, and broader market conversations.
Members-only sections covering investment ideas, personal finance, strategies, real estate, wealth management, events, and more.
One-time lifetime membership fee of $49.99 USD, available through the site’s shop.
Private Members Room (also known as the COBF Zoom Room) reserved for paid members.
Podium section for blog-style, user-submitted articles, accessible via forum login.

Community votes (overall)

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ETF Action

etfaction.com

Independent ETF analytics platform for advisors and asset managers. Offers global ETF classification, look‑through holdings analytics, overlap analysis, flows/volumes with T+1 flow timing, live quotes (FMV) via Polygon.io, model portfolio tools, 13F screening (Advisor Pro), and enterprise options including API access. DIY/Advisor Pro plans emphasize self‑service research and Excel/CSV downloads; Enterprise adds collaboration, custom dashboards, and API. A separate Model Builder plan enables model uploads and ‘Bridge’ trading integration. API details are not publicly documented—confirm endpoints and auth with vendor.

Platforms

Web

API

Pricing

Free

Subscription

Quick highlights

Global ETF ‘Channels’ taxonomy with category reports and dashboards (Size & Style US/Global, Region & Country, Sector & Industry, Thematic, Fixed Income, Non‑Traditional, Commodities, Crypto).
Look‑through analytics on fund holdings for factor/style, sector/industry, country, concentration; portfolio overlap analysis across funds or entire models.
Flows & trading dashboards (volumes/ADV); flows noted as T+1 timing in daily updates.
Live pricing on platform pages via Polygon.io FMV quotes (real‑time-ish indicative).
Screeners for ETFs; watchlists; data exports to Excel/CSV (DIY 50 rows, Advisor Pro 500 rows).

Community votes (overall)

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Overlap

Shared focus areas

1 overlap

Both tools cover this research theme.

Blogs

Where they differ

Corner of Berkshire & Fairfax (COBF)

Distinct strengths include:

Forums

Public discussion boards focused on Berkshire Hathaway, Fairfax Financial, general investing, books, and broader market conversations.
Members-only sections covering investment ideas, personal finance, strategies, real estate, wealth management, events, and more.
One-time lifetime membership fee of $49.99 USD, available through the site’s shop.
Private Members Room (also known as the COBF Zoom Room) reserved for paid members.

ETF Action

Distinct strengths include:

Global ETF ‘Channels’ taxonomy with category reports and dashboards (Size & Style US/Global, Region & Country, Sector & Industry, Thematic, Fixed Income, Non‑Traditional, Commodities, Crypto).
Look‑through analytics on fund holdings for factor/style, sector/industry, country, concentration; portfolio overlap analysis across funds or entire models.
Flows & trading dashboards (volumes/ADV); flows noted as T+1 timing in daily updates.
Live pricing on platform pages via Polygon.io FMV quotes (real‑time-ish indicative).

Feature-by-feature breakdown

Attribute	Corner of Berkshire & Fairfax (COBF)	ETF Action
Categories Which research workflows each platform targets	Shared: Blogs Unique: Forums	Shared: Blogs Unique: ETF Overview, ETF Performance, ETF Holdings, ETF Fundamentals, ETF Valuation, ETF Factors, ETF Overlap, Screeners, Data Visualizations, Portfolio, Watchlist, Backtesting, 13F, Data APIs, Alerts, Videos
Asset types Supported asset classes and universes	Stocks	ETFs, Stocks
Experience levels Who each product is built for	Beginner, Intermediate, Advanced	Beginner, Intermediate, Advanced
Platforms Where you can access the product	Web	Web, API
Pricing High-level pricing models	Free, One-time	Free, Subscription
Key features Core capabilities called out by each vendor	Unique Public discussion boards focused on Berkshire Hathaway, Fairfax Financial, general investing, books, and broader market conversations. Members-only sections covering investment ideas, personal finance, strategies, real estate, wealth management, events, and more. One-time lifetime membership fee of $49.99 USD, available through the site’s shop. Private Members Room (also known as the COBF Zoom Room) reserved for paid members. Podium section for blog-style, user-submitted articles, accessible via forum login. Community features include periodic stock-picking competitions and contests.	Unique Global ETF ‘Channels’ taxonomy with category reports and dashboards (Size & Style US/Global, Region & Country, Sector & Industry, Thematic, Fixed Income, Non‑Traditional, Commodities, Crypto). Look‑through analytics on fund holdings for factor/style, sector/industry, country, concentration; portfolio overlap analysis across funds or entire models. Flows & trading dashboards (volumes/ADV); flows noted as T+1 timing in daily updates. Live pricing on platform pages via Polygon.io FMV quotes (real‑time-ish indicative). Screeners for ETFs; watchlists; data exports to Excel/CSV (DIY 50 rows, Advisor Pro 500 rows). Model portfolio creation & back‑testing; private model marketplaces for advisors/strategists.
Tested Verified by hands-on testing inside Find My Moat	Not yet	Not yet
Editor pick Featured inside curated shortlists	Standard listing	Standard listing

Frequently Asked Questions

Which workflows do Corner of Berkshire & Fairfax (COBF) and ETF Action both support?

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

Do Corner of Berkshire & Fairfax (COBF) and ETF Action require subscriptions?

Both Corner of Berkshire & Fairfax (COBF) and ETF Action keep freemium access with optional paid upgrades, so you can trial each platform before committing.

How can you access Corner of Berkshire & Fairfax (COBF) and ETF Action?

Both Corner of Berkshire & Fairfax (COBF) and ETF Action 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?

Corner of Berkshire & Fairfax (COBF) differentiates itself with Public discussion boards focused on Berkshire Hathaway, Fairfax Financial, general investing, books, and broader market conversations., Members-only sections covering investment ideas, personal finance, strategies, real estate, wealth management, events, and more., and One-time lifetime membership fee of $49.99 USD, available through the site’s shop., whereas ETF Action stands out for Global ETF ‘Channels’ taxonomy with category reports and dashboards (Size & Style US/Global, Region & Country, Sector & Industry, Thematic, Fixed Income, Non‑Traditional, Commodities, Crypto)., Look‑through analytics on fund holdings for factor/style, sector/industry, country, concentration; portfolio overlap analysis across funds or entire models., and Flows & trading dashboards (volumes/ADV); flows noted as T+1 timing in daily updates..

Keep exploring

Stay on top of related tools

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