FIELD NOTES · VOL. 01

Good research starts with better questions.

Practical notes on stock data APIs, company fundamentals, and the small details that make market data easier to use responsibly.

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THE RESEARCH DESK · 28 OCT 2026

Understand the field before you trust the number.

THE JOURNAL

Latest notes

02 ARTICLES

API FIELDWORK6 MIN READ

Reading company fundamentals through a finance API

A worked example using two market-data tools to inspect Microsoft’s reported operating profile.

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DATA LITERACY5 MIN READ

Why two providers can show different numbers

Period labels, definitions, and timing matter as much as the value in the cell.

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ABOUT THIS JOURNAL

Curious, careful, useful.

Market Data Notes is a small publication about working with financial data APIs. Examples are educational, timestamped, and source-labeled. They are not recommendations to buy or sell securities. Figures can change as vendors refresh their datasets.