21 min
Top 12 Stock Research Tools Compared
12 tools will show you the same company's financials. How many of them actually own the numbers?
Resources
Guides to the tools, screeners and data providers investors actually use — what each one is good at, and where it falls short.
10 guides
17 min
Top 6 Stock Screener APIs Compared
6 APIs will take a screen and run it for you. How much of yours fits in a single request?
16 min
9 Industry Classification Systems Compared
9 systems will tell you what industry a company belongs to. Which one describes the company you actually own?
15 min
10 Best SEC Filings APIs
A filings API does 3 things: tell you a filing exists, hand you the files inside it, and hand you a section as clean text. 10 options compared on all 3 and on when the work gets done.
16 min
10 Best Institutional Ownership Data APIs
I read all 10 pricing pages properly, including the tier boundaries that quietly hide where ownership data actually starts. Here is what each one costs and covers.
12 min
9 Best Free Economic Data APIs
Every one of these costs nothing. What separates them is the ceiling: the key you need, the calls you get, and the series that quietly are not there.
13 min
7 Macroeconomic Data Providers Compared
Coverage is the easy part to sell and the wrong thing to buy on. Revision history, distribution rights and where the calendar sits matter more, and they are buried in the tiers.
13 min
9 Best Insider Trading Data APIs
Most insider feeds hand you acquisitions and disposals. The useful ones tell you which were bought with money, and adjust the share counts for splits.
14 min
10 Best Financial Statements APIs
Pulling the numbers is the easy part. Making a bank, a REIT and a software company line up in the same schema is the product, and it is where these 6 diverge.
15 min
12 EOD Stock Data APIs Compared
Three things decide whether a daily price series is usable: how corporate actions are handled, whether dead companies are still in it, and how you get the whole universe out.