VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Thursday, October 30, 2025

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Tool Comparison

Open Payments (CMS) vs Tiingo comparison

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

Quick takeaways

Open Payments (CMS) adds Data Visualizations, and Regulatory Filings Monitoring coverage that Tiingo skips.

Tiingo includes News, Dividends, and Splits categories that Open Payments (CMS) omits.

In depth comparison

Open Payments (CMS) logo

Open Payments (CMS)

openpaymentsdata.cms.gov

U.S. federal open‑data program (Affordable Care Act ‘Sunshine Act’) that publishes financial relationships between drug/device manufacturers (and GPOs) and healthcare providers (physicians, NPPs since PY2021, and teaching hospitals). CMS publishes the prior program year’s full datasets on or before June 30 each year and issues a January refresh. Data are accessible via the web search tool, bulk downloads, and a REST Open Data API (filter, query, aggregate).

Platforms

WebAPI

Pricing

Free

Quick highlights

  • Three core datasets each year: General Payments, Research Payments, and Ownership/Investment Interests.
  • Web search/explorer with filtering and charts; program year downloads available from the portal.
  • Open Data API (ODA) for programmatic access with filtering, querying, and aggregation (SoQL‑style).
  • Publication cadence: initial annual publication on/around June 30 for the prior year, plus a January data refresh.
  • Pre‑publication workflow: 45‑day recipient review & dispute (Apr 1–May 15) + 15‑day correction window (May 16–May 30).

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Tiingo logo

Tiingo

tiingo.com

Flat-rate market data platform with simple, transparent plans. Tiingo provides end-of-day and real-time APIs for equities, mutual funds, ETFs, forex, and crypto, alongside corporate actions, fundamentals, and news. Plans range from a free Starter tier to affordable paid subscriptions, with usage limits and data history varying by plan. Enterprise or commercial use is supported via higher tiers.

Platforms

WebAPI

Pricing

FreeSubscription

Quick highlights

  • End-of-day (EOD) price API with proprietary error-checking and broad historical coverage.
  • Coverage spans 65,000+ US stocks, ETFs, mutual funds, ADRs, plus Chinese equities with 50+ years of history.
  • Corporate actions API for dividends and splits, including both historical and announced events.
  • IEX real-time equity feed with tick-level data via REST and WebSocket.
  • Forex API with real-time and historical data for 140+ currency pairs.

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Where they differ

Open Payments (CMS)

Distinct strengths include:

Data VisualizationsRegulatory Filings Monitoring
  • Three core datasets each year: General Payments, Research Payments, and Ownership/Investment Interests.
  • Web search/explorer with filtering and charts; program year downloads available from the portal.
  • Open Data API (ODA) for programmatic access with filtering, querying, and aggregation (SoQL‑style).
  • Publication cadence: initial annual publication on/around June 30 for the prior year, plus a January data refresh.

Tiingo

Distinct strengths include:

NewsDividendsSplits
  • End-of-day (EOD) price API with proprietary error-checking and broad historical coverage.
  • Coverage spans 65,000+ US stocks, ETFs, mutual funds, ADRs, plus Chinese equities with 50+ years of history.
  • Corporate actions API for dividends and splits, including both historical and announced events.
  • IEX real-time equity feed with tick-level data via REST and WebSocket.

Feature-by-feature breakdown

AttributeOpen Payments (CMS)Tiingo
Categories

Which research workflows each platform targets

Shared: Data APIs, APIs & SDKs

Unique: Data Visualizations, Regulatory Filings Monitoring

Shared: Data APIs, APIs & SDKs

Unique: News, Dividends, Splits

Asset types

Supported asset classes and universes

Other

Stocks, ETFs, Mutual Funds, Cryptos, Currencies

Experience levels

Who each product is built for

Beginner, Intermediate, Advanced

Beginner, Intermediate, Advanced

Platforms

Where you can access the product

Web, API

Web, API

Pricing

High-level pricing models

Free

Free, Subscription

Key features

Core capabilities called out by each vendor

Unique

  • Three core datasets each year: General Payments, Research Payments, and Ownership/Investment Interests.
  • Web search/explorer with filtering and charts; program year downloads available from the portal.
  • Open Data API (ODA) for programmatic access with filtering, querying, and aggregation (SoQL‑style).
  • Publication cadence: initial annual publication on/around June 30 for the prior year, plus a January data refresh.
  • Pre‑publication workflow: 45‑day recipient review & dispute (Apr 1–May 15) + 15‑day correction window (May 16–May 30).
  • Supplemental/lookup tables (e.g., Covered Recipient Profile Supplement; distinct physician profile) to aid joins.

Unique

  • End-of-day (EOD) price API with proprietary error-checking and broad historical coverage.
  • Coverage spans 65,000+ US stocks, ETFs, mutual funds, ADRs, plus Chinese equities with 50+ years of history.
  • Corporate actions API for dividends and splits, including both historical and announced events.
  • IEX real-time equity feed with tick-level data via REST and WebSocket.
  • Forex API with real-time and historical data for 140+ currency pairs.
  • Crypto API aggregating data from multiple exchanges, with REST and WebSocket endpoints.
Tested

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Frequently Asked Questions

Which workflows do Open Payments (CMS) and Tiingo both support?

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

Do Open Payments (CMS) and Tiingo require subscriptions?

Both Open Payments (CMS) and Tiingo keep freemium access with optional paid upgrades, so you can trial each platform before committing.

How can you access Open Payments (CMS) and Tiingo?

Both Open Payments (CMS) and Tiingo 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?

Open Payments (CMS) differentiates itself with Three core datasets each year: General Payments, Research Payments, and Ownership/Investment Interests., Web search/explorer with filtering and charts; program year downloads available from the portal., and Open Data API (ODA) for programmatic access with filtering, querying, and aggregation (SoQL‑style)., whereas Tiingo stands out for End-of-day (EOD) price API with proprietary error-checking and broad historical coverage., Coverage spans 65,000+ US stocks, ETFs, mutual funds, ADRs, plus Chinese equities with 50+ years of history., and Corporate actions API for dividends and splits, including both historical and announced events..

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Stay on top of related tools

Browse the categories and profiles that overlap most with this comparison to round out your shortlist.

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.