VOL. XCIV, NO. 247
★ BEST INVESTING TOOLS COMPARISON ★
NO ADVICE
Wednesday, June 3, 2026
Tool Comparison · Wednesday, June 3, 2026
13F Insight vs Corner of Berkshire & Fairfax (COBF)
13F Insight vs Corner of Berkshire & Fairfax (COBF): which investing tool fits your workflow? Compare pricing, features, platforms, and verdict in seconds.
13F Insight
13finsight.com
Best for data visualizations, and watchlist
- Pricing
- Free
- Platforms
- Web, API
Corner of Berkshire & Fairfax (COBF)
thecobf.com
Best for forums
- Pricing
- Free
- Platforms
- Web
Outbound links may include affiliate or sponsor codes.
Comparison snapshot
Who should choose which?
Choose
13F Insight if…
- You build with APIs or automate workflows
- You’re a long-term or value-focused investor
- You need tracks institutional investors, analyzes 13f filings, and shows what hedge funds are buying and selling.
- You need covers sec 13f institutional holdings, form 4 insider transactions, and 13d/g beneficial ownership reports.
Choose
Corner of Berkshire & Fairfax (COBF) if…
- You need public discussion boards focused on berkshire hathaway, fairfax financial, general investing, books, and broader market conversations.
- You need members-only sections covering investment ideas, personal finance, strategies, real estate, wealth management, events, and more.
- You need one-time lifetime membership fee of $49.99 usd, available through the site’s shop.
- You need private members room (also known as the cobf zoom room) reserved for paid members.
Consider alternatives if…
- You want broader category coverage in one tool.
- Neither pricing tier fits your budget.
Side-by-side feature breakdown
| Attribute | 13F Insight | Corner of Berkshire & Fairfax (COBF) |
|---|---|---|
Asset types | StocksETFsOptionsBonds | Stocks |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Regions | North America | Not specified |
Data freshness | Not specified | Not specified |
API access | Not specified | Not specified |
Export formats | Not specified | Not specified |
Seen enough? Open either tool and try it now.
Pricing breakdown
Tool
13F Insight
—
Starting price
Plans & pricing
Tool
Corner of Berkshire & Fairfax (COBF)
$49.99 once
Starting price
Plans & pricing
Coverage overlap
Categories covered by 13F Insight only.
Categories covered by Corner of Berkshire & Fairfax (COBF) only.
Community category leaders
Vote sentiment comparison
Loading sentiment chart...
Still deciding? Get hands-on with both — most plans offer a free tier or trial.
Frequently Asked Questions
What's the difference between 13F Insight and Corner of Berkshire & Fairfax (COBF)?
13F Insight focuses on Data Visualizations, Watchlist, and Investor Holdings while Corner of Berkshire & Fairfax (COBF) specializes in Forums, and Blogs. They overlap in 1 categories, so choose based on your preferred workflow and pricing.
How much do 13F Insight and Corner of Berkshire & Fairfax (COBF) cost?
Good news—both 13F Insight and Corner of Berkshire & Fairfax (COBF) offer free plans. You can try each platform without commitment and only pay when you need premium features.
Does 13F Insight or Corner of Berkshire & Fairfax (COBF) have an API?
13F Insight provides API access for programmatic data retrieval and custom integrations. Corner of Berkshire & Fairfax (COBF) doesn't currently offer an API, so you'll need to use their web interface.
Should I choose 13F Insight or Corner of Berkshire & Fairfax (COBF)?
Choose 13F Insight if you need Tracks institutional investors, analyzes 13F filings, and shows what hedge funds are buying and selling., and Covers SEC 13F institutional holdings, Form 4 insider transactions, and 13D/G beneficial ownership reports.. Go with Corner of Berkshire & Fairfax (COBF) if Public discussion boards focused on Berkshire Hathaway, Fairfax Financial, general investing, books, and broader market conversations., and Members-only sections covering investment ideas, personal finance, strategies, real estate, wealth management, events, and more. better fits how you invest.
What asset classes do 13F Insight and Corner of Berkshire & Fairfax (COBF) cover?
Both cover Stocks. 13F Insight also includes ETFs, Options, and Bonds.
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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.