VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Sunday, October 5, 2025

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

Head-to-head

Corner of Berkshire & Fairfax (COBF) vs ORTEX 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 ORTEX skips.

ORTEX includes Short Interest, Insider Data, Quant, Data Visualizations, Index Rebalancing, Money Flow, Options & Derivatives, Options, Analyst Recommendations, Analyst Price Targets, News, Calendar, Data APIs, US Government Trades, and Screeners 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..

ORTEX is known for: Short interest and lending analytics including utilization, cost to borrow, shares on loan, and percentage of free float on loan, with intraday and real-time estimates from a large pool of lenders and brokers., Official U.S. exchange-reported short interest (bi-monthly) and European flagged shorts, alongside lending-based estimates., and Options coverage with unusual activity and flow detection; OPRA-sourced data gated by user agreement to OPRA terms..

ORTEX offers mobile access, which Corner of Berkshire & Fairfax (COBF) skips.

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.

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ORTEX

public.ortex.com

Hands-on review

Analytics platform focused on short interest and securities lending, with additional coverage of options flow, insider trades, analyst views, and index rebalances. Offers a free tier with limited features, plus paid plans (Basic $39/mo, Advanced $129/mo). Options data is sourced from OPRA and requires agreeing to OPRA terms. API access is available with key-based authentication, and an Excel Add-in (beta) supports short interest data.

Platforms

Web

Mobile

API

Pricing

Free

Subscription

Quick highlights

Short interest and lending analytics including utilization, cost to borrow, shares on loan, and percentage of free float on loan, with intraday and real-time estimates from a large pool of lenders and brokers.
Official U.S. exchange-reported short interest (bi-monthly) and European flagged shorts, alongside lending-based estimates.
Options coverage with unusual activity and flow detection; OPRA-sourced data gated by user agreement to OPRA terms.
Alpha trading signals across themes like Short Squeeze, EPS, RSI, MACD, and Company Events, each with back-tested stats and intraday updates.
Configurable stock screener including short-interest columns; results can be exported.

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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.

ORTEX

Distinct strengths include:

Options & Derivatives

Options

Short interest and lending analytics including utilization, cost to borrow, shares on loan, and percentage of free float on loan, with intraday and real-time estimates from a large pool of lenders and brokers.
Official U.S. exchange-reported short interest (bi-monthly) and European flagged shorts, alongside lending-based estimates.
Options coverage with unusual activity and flow detection; OPRA-sourced data gated by user agreement to OPRA terms.
Alpha trading signals across themes like Short Squeeze, EPS, RSI, MACD, and Company Events, each with back-tested stats and intraday updates.

Feature-by-feature breakdown

Attribute	Corner of Berkshire & Fairfax (COBF)	ORTEX
Categories Which research workflows each platform targets	Shared: Blogs Unique: Forums	Shared: Blogs Unique: Short Interest, Insider Data, Quant, Data Visualizations, Index Rebalancing, Money Flow, Options & Derivatives, Options, Analyst Recommendations, Analyst Price Targets, News, Calendar, Data APIs, US Government Trades, Screeners
Asset types Supported asset classes and universes	Stocks	Stocks, ETFs, Options
Experience levels Who each product is built for	Beginner, Intermediate, Advanced	Beginner, Intermediate, Advanced
Platforms Where you can access the product	Web	Web, Mobile, 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 Short interest and lending analytics including utilization, cost to borrow, shares on loan, and percentage of free float on loan, with intraday and real-time estimates from a large pool of lenders and brokers. Official U.S. exchange-reported short interest (bi-monthly) and European flagged shorts, alongside lending-based estimates. Options coverage with unusual activity and flow detection; OPRA-sourced data gated by user agreement to OPRA terms. Alpha trading signals across themes like Short Squeeze, EPS, RSI, MACD, and Company Events, each with back-tested stats and intraday updates. Configurable stock screener including short-interest columns; results can be exported. Live intraday charts with last price and bid/ask displayed.
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 Corner of Berkshire & Fairfax (COBF) and ORTEX 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 ORTEX require subscriptions?

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

Which tool has mobile access?

ORTEX ships a dedicated mobile experience, while Corner of Berkshire & Fairfax (COBF) focuses on web or desktop access.

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 ORTEX stands out for Short interest and lending analytics including utilization, cost to borrow, shares on loan, and percentage of free float on loan, with intraday and real-time estimates from a large pool of lenders and brokers., Official U.S. exchange-reported short interest (bi-monthly) and European flagged shorts, alongside lending-based estimates., and Options coverage with unusual activity and flow detection; OPRA-sourced data gated by user agreement to OPRA terms..

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