VOL. XCIV, NO. 247

★ BEST INVESTING TOOLS COMPARISON ★

NO ADVICE

Sunday, March 29, 2026

Tool Comparison

Open Payments (CMS) vs OTC Markets comparison

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

Open Payments (CMS) logo

Open Payments (CMS)

openpaymentsdata.cms.gov

PricingFree
PlatformsWeb, API
OTC Markets logo

OTC Markets

otcmarkets.com

PricingFree, Subscription
PlatformsWeb, API, Other
Top 50 Investing ToolsThe global ranking of the best investing tools, ranked by community votes.

At a glance

Platforms
Open Payments (CMS)Web, API
OTC MarketsWeb, API, Other
Categories
Open Payments (CMS)4
OTC Markets5
Pricing details

Tool

Open Payments (CMS)

Starting price

Free tierYes
Free trial

Plans & pricing

FreeFree

Tool

OTC Markets

Starting price

Free tierYes
Free trial

Plans & pricing

Public WebsiteFree
Market Data LicensingSubscription
OTC Disclosure APIContact sales
Category leaders
ScreenersOTC Markets
NewsOTC Markets
Data VisualizationsOpen Payments (CMS)
Browse the #1 tool in 90+ categories

Vote sentiment comparison

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Platform details

AttributeOpen Payments (CMS)OTC Markets
Asset types
Other
StocksBonds
Experience
BeginnerIntermediateAdvanced
BeginnerIntermediateAdvanced
Regions
North America
North America
Data freshness
End of Day
Streaming15-min DelayedEnd of Day
API access
REST
REST
Export formats
CSVJSON
Not specified

Coverage overlap

Shared categories1

Categories where both tools offer overlapping coverage.

Open Payments (CMS) strengths3

Categories covered by Open Payments (CMS) only.

OTC Markets strengths4

Categories covered by OTC Markets only.

Frequently Asked Questions

What's the difference between Open Payments (CMS) and OTC Markets?

Open Payments (CMS) focuses on Data APIs, APIs & SDKs, and Data Visualizations while OTC Markets specializes in Screeners, News, and Data APIs. They overlap in 1 categories, so choose based on your preferred workflow and pricing.

How much do Open Payments (CMS) and OTC Markets cost?

Good news—both Open Payments (CMS) and OTC Markets offer free plans. You can try each platform without commitment and only pay when you need premium features.

Do Open Payments (CMS) and OTC Markets have APIs?

Yes, both platforms offer API access for developers and quants who want to build custom integrations or automate their workflows.

Should I choose Open Payments (CMS) or OTC Markets?

Choose Open Payments (CMS) if you need Three core datasets each year: General Payments, Research Payments, and Ownership/Investment Interests., and Web search/explorer with filtering and charts; program year downloads available from the portal.. Go with OTC Markets if Public website for OTCQX, OTCQB, OTCID and Pink Limited markets with stock & bond quotes, trade prices, charts, financials and company news., and Stock Screener (web UI) for OTC securities (page titled “OTC Markets Stock Screener”). better fits how you invest.

What asset classes do Open Payments (CMS) and OTC Markets cover?

Both cover common asset types. Open Payments (CMS) also includes Other. OTC Markets adds coverage for Stocks, and Bonds.

Can I export data from Open Payments (CMS) and OTC Markets?

Open Payments (CMS) supports data exports to CSV, and JSON. OTC Markets has more limited export options.

Which has a better stock screener—Open Payments (CMS) or OTC Markets?

OTC Markets includes a stock screener for finding investment ideas. Open Payments (CMS) focuses on other analytical tools.

Keep Exploring

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.