VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Sunday, October 5, 2025

Head-to-head

Investment Masters Class (MastersInvest.com) vs Observatory of Economic Complexity (OEC) comparison

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

Quick takeaways

Investment Masters Class (MastersInvest.com) adds Newsletters, and Playbooks & Case Studies coverage that Observatory of Economic Complexity (OEC) skips.

Observatory of Economic Complexity (OEC) includes Data Visualizations, Data APIs, and Shipping & Trade categories that Investment Masters Class (MastersInvest.com) omits.

Investment Masters Class (MastersInvest.com) highlights: A library of 100 structured tutorials covering core concepts such as compounding, moats, margin of safety, position sizing, and investment checklists., Regularly updated blog essays distilling insights from legendary investors, CEOs, and business leaders., and The “Masters Bookshelf,” a curated reading list spanning investing, history, psychology, and business classics..

Observatory of Economic Complexity (OEC) is known for: Visualizations and rankings based on Economic Complexity Index (ECI) and Product Complexity Index (PCI), with reports by HS classification., Monthly international trade data and subnational coverage across 30+ countries available on Pro plans., and Premium tier adds company-level U.S. Bill of Lading data through a Company Explorer sourced from U.S. Customs..

Investment Masters Class (MastersInvest.com) logo

Investment Masters Class (MastersInvest.com)

mastersinvest.com

A free educational resource offering tutorials, curated reading, and essays on timeless lessons from great investors. Includes a blog and newsletter sign-up. All content is informational and intended to inspire better investing habits — not financial advice.

Platforms

Web

Pricing

Free

Quick highlights

  • A library of 100 structured tutorials covering core concepts such as compounding, moats, margin of safety, position sizing, and investment checklists.
  • Regularly updated blog essays distilling insights from legendary investors, CEOs, and business leaders.
  • The “Masters Bookshelf,” a curated reading list spanning investing, history, psychology, and business classics.
  • Investor Letters hub linking directly to primary sources like Buffett, Li Lu, and Lindsell Train.
  • Profiles of notable investors, summarizing their philosophies, strategies, and biggest lessons.

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Observatory of Economic Complexity (OEC) logo

Observatory of Economic Complexity (OEC)

oec.world

A global trade and economic complexity platform with rich visualizations, country and product rankings, and an API. Pro plans unlock the latest monthly and subnational datasets, while Premium adds company-level Bill of Lading data and bulk downloads. Academic discounts and enterprise options with SSO support are also available.

Platforms

Web
API

Pricing

Free
Subscription

Quick highlights

  • Visualizations and rankings based on Economic Complexity Index (ECI) and Product Complexity Index (PCI), with reports by HS classification.
  • Monthly international trade data and subnational coverage across 30+ countries available on Pro plans.
  • Premium tier adds company-level U.S. Bill of Lading data through a Company Explorer sourced from U.S. Customs.
  • REST API with a free tier for historical data and Pro/Premium tokens for the latest datasets, subnational access, and higher query volumes.
  • Data downloads in CSV, Excel, or JSON, with bulk access and larger query limits available for subscribers.

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Overlap

Shared focus areas

2 overlaps

Mutual strengths include Education, and Blogs.

Where they differ

Investment Masters Class (MastersInvest.com)

Distinct strengths include:

  • A library of 100 structured tutorials covering core concepts such as compounding, moats, margin of safety, position sizing, and investment checklists.
  • Regularly updated blog essays distilling insights from legendary investors, CEOs, and business leaders.
  • The “Masters Bookshelf,” a curated reading list spanning investing, history, psychology, and business classics.
  • Investor Letters hub linking directly to primary sources like Buffett, Li Lu, and Lindsell Train.

Observatory of Economic Complexity (OEC)

Distinct strengths include:

  • Visualizations and rankings based on Economic Complexity Index (ECI) and Product Complexity Index (PCI), with reports by HS classification.
  • Monthly international trade data and subnational coverage across 30+ countries available on Pro plans.
  • Premium tier adds company-level U.S. Bill of Lading data through a Company Explorer sourced from U.S. Customs.
  • REST API with a free tier for historical data and Pro/Premium tokens for the latest datasets, subnational access, and higher query volumes.

Feature-by-feature breakdown

AttributeInvestment Masters Class (MastersInvest.com)Observatory of Economic Complexity (OEC)
Categories

Which research workflows each platform targets

Shared: Education, Blogs

Unique: Newsletters, Playbooks & Case Studies

Shared: Education, Blogs

Unique: Data Visualizations, Data APIs, Shipping & Trade

Asset types

Supported asset classes and universes

Other

Other

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

Free, Subscription

Key features

Core capabilities called out by each vendor

Unique

  • A library of 100 structured tutorials covering core concepts such as compounding, moats, margin of safety, position sizing, and investment checklists.
  • Regularly updated blog essays distilling insights from legendary investors, CEOs, and business leaders.
  • The “Masters Bookshelf,” a curated reading list spanning investing, history, psychology, and business classics.
  • Investor Letters hub linking directly to primary sources like Buffett, Li Lu, and Lindsell Train.
  • Profiles of notable investors, summarizing their philosophies, strategies, and biggest lessons.
  • Free email subscription (“ENROL”) to receive blog posts, book reviews, and thematic insights.

Unique

  • Visualizations and rankings based on Economic Complexity Index (ECI) and Product Complexity Index (PCI), with reports by HS classification.
  • Monthly international trade data and subnational coverage across 30+ countries available on Pro plans.
  • Premium tier adds company-level U.S. Bill of Lading data through a Company Explorer sourced from U.S. Customs.
  • REST API with a free tier for historical data and Pro/Premium tokens for the latest datasets, subnational access, and higher query volumes.
  • Data downloads in CSV, Excel, or JSON, with bulk access and larger query limits available for subscribers.
  • Support for multiple HS revisions (from HS92 through HS2022) with well-documented historical ranges.
Tested

Verified by hands-on testing inside Find My Moat

Not yet

Not yet

Editor pick

Featured inside curated shortlists

Standard listing

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Frequently Asked Questions

Which workflows do Investment Masters Class (MastersInvest.com) and Observatory of Economic Complexity (OEC) both support?

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

Do Investment Masters Class (MastersInvest.com) and Observatory of Economic Complexity (OEC) require subscriptions?

Both Investment Masters Class (MastersInvest.com) and Observatory of Economic Complexity (OEC) keep freemium access with optional paid upgrades, so you can trial each platform before committing.

How can you access Investment Masters Class (MastersInvest.com) and Observatory of Economic Complexity (OEC)?

Both Investment Masters Class (MastersInvest.com) and Observatory of Economic Complexity (OEC) 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?

Investment Masters Class (MastersInvest.com) differentiates itself with A library of 100 structured tutorials covering core concepts such as compounding, moats, margin of safety, position sizing, and investment checklists., Regularly updated blog essays distilling insights from legendary investors, CEOs, and business leaders., and The “Masters Bookshelf,” a curated reading list spanning investing, history, psychology, and business classics., whereas Observatory of Economic Complexity (OEC) stands out for Visualizations and rankings based on Economic Complexity Index (ECI) and Product Complexity Index (PCI), with reports by HS classification., Monthly international trade data and subnational coverage across 30+ countries available on Pro plans., and Premium tier adds company-level U.S. Bill of Lading data through a Company Explorer sourced from U.S. Customs..

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.