VOL. XCIV, NO. 247

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Friday, December 26, 2025

Tool Comparison

marketstack vs Relative Rotation Graphs® (RRG Research) comparison

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

Quick takeaways

marketstack adds Dividends, Splits, ETF Holdings, Interest Rates, Analyst Recommendations, and Analyst Price Targets coverage that Relative Rotation Graphs® (RRG Research) skips.

Relative Rotation Graphs® (RRG Research) includes Data Visualizations, and Stock Comparison categories that marketstack omits.

marketstack has a free tier, while Relative Rotation Graphs® (RRG Research) requires a paid plan.

In depth comparison

marketstack

marketstack.com

A global market data API with free and paid tiers. End-of-day coverage spans 15+ years and 500k+ tickers, while intraday and real-time access are unlocked on higher plans. Rate limits apply: 5 requests per second globally, with some endpoints (like ETF holdings) counting as multiple calls. Premium tiers add features like SEC/EDGAR filings, analyst ratings, and bond/index data. Data is sourced from Tiingo for U.S. markets, and uptime is tracked on a public status page.

Platforms

WebAPI

Pricing

FreeSubscription

Quick highlights

RESTful JSON API with secure API key access, HTTPS transport, and a 5 requests/sec global limit.
End-of-day data with 15+ years of history across 500,000+ tickers, including MIC-level filtering and adjusted fields (open, close, volume).
Intraday data for U.S. markets via IEX, with intervals from 1–60 minutes. Real-time reference prices are derived from IEX feeds; some fields require separate entitlements.
Professional and higher tiers include real-time stock prices with minute-level updates (1 API call per minute rate cap).
Corporate actions endpoints for dividends and stock splits.

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Relative Rotation Graphs® (RRG Research)

relativerotationgraphs.com

RRG Research (creator/owner of Relative Rotation Graphs®) offers: (1) **RRG Online** - a lightweight, subscription-based web app with pre-defined universes and limited functionality (includes a one-month free trial; pricing starts from $10/month); and (2) **RRG API** - a bespoke/contact-priced service to embed RRGs into professional workflows using client-supplied data (XML in -> JSON out).

Platforms

WebAPI

Pricing

SubscriptionOther

Quick highlights

Relative Rotation Graphs® (RRGs®) visualize trends in relative strength/performance of multiple securities in a universe versus a common benchmark (and each other).
RRGs are described by the vendor as applicable across asset classes (e.g., stock indexes, stock sectors, individual stocks, bonds, (crypto)-currencies, and asset allocation).
RRG Online: vendor-run web implementation built in cooperation with Optuma, positioned as a "lightweight" version with limited functionality and pre-defined universes.
RRG Online universes/benchmarks (examples listed by the vendor) include S&P 500 sectors vs S&P 500, AEX stocks vs AEX, ASX sectors vs ASX, Euro STOXX 50 stocks vs Euro STOXX 50, STOXX European sectors vs STOXX 600, Jakarta IDX stocks vs IDX, crypto vs BTC/USD, and G10 FX/currency pairs.
RRG Online interaction features include toggling securities on/off, setting trail length, zooming/dragging, snapping axes, and playing/animating historical rotation via a slider or play button.

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Where they differ

marketstack

Distinct strengths include:

Dividends Splits ETF Holdings Interest Rates Analyst Recommendations Analyst Price Targets

RESTful JSON API with secure API key access, HTTPS transport, and a 5 requests/sec global limit.
End-of-day data with 15+ years of history across 500,000+ tickers, including MIC-level filtering and adjusted fields (open, close, volume).
Intraday data for U.S. markets via IEX, with intervals from 1–60 minutes. Real-time reference prices are derived from IEX feeds; some fields require separate entitlements.
Professional and higher tiers include real-time stock prices with minute-level updates (1 API call per minute rate cap).

Relative Rotation Graphs® (RRG Research)

Distinct strengths include:

Data Visualizations Stock Comparison

Relative Rotation Graphs® (RRGs®) visualize trends in relative strength/performance of multiple securities in a universe versus a common benchmark (and each other).
RRGs are described by the vendor as applicable across asset classes (e.g., stock indexes, stock sectors, individual stocks, bonds, (crypto)-currencies, and asset allocation).
RRG Online: vendor-run web implementation built in cooperation with Optuma, positioned as a "lightweight" version with limited functionality and pre-defined universes.
RRG Online universes/benchmarks (examples listed by the vendor) include S&P 500 sectors vs S&P 500, AEX stocks vs AEX, ASX sectors vs ASX, Euro STOXX 50 stocks vs Euro STOXX 50, STOXX European sectors vs STOXX 600, Jakarta IDX stocks vs IDX, crypto vs BTC/USD, and G10 FX/currency pairs.

Feature-by-feature breakdown

Attribute	marketstack	Relative Rotation Graphs® (RRG Research)
Categories Which research workflows each platform targets	Shared: Data APIs, APIs & SDKs Unique: Dividends, Splits, ETF Holdings, Interest Rates, Analyst Recommendations, Analyst Price Targets	Shared: Data APIs, APIs & SDKs Unique: Data Visualizations, Stock Comparison
Asset types Supported asset classes and universes	Stocks, ETFs, Bonds, Commodities	Stocks, Bonds, Currencies, Cryptos, Other
Experience levels Who each product is built for	Intermediate, Advanced	Intermediate, Advanced
Platforms Where you can access the product	Web, API	Web, API
Pricing High-level pricing models	Free, Subscription	Subscription, Other
Key features Core capabilities called out by each vendor	Unique RESTful JSON API with secure API key access, HTTPS transport, and a 5 requests/sec global limit. End-of-day data with 15+ years of history across 500,000+ tickers, including MIC-level filtering and adjusted fields (open, close, volume). Intraday data for U.S. markets via IEX, with intervals from 1–60 minutes. Real-time reference prices are derived from IEX feeds; some fields require separate entitlements. Professional and higher tiers include real-time stock prices with minute-level updates (1 API call per minute rate cap). Corporate actions endpoints for dividends and stock splits. ETF holdings data (Basic+ plans and above) with identifiers like ISIN and CUSIP; each request consumes 20 API calls.	Unique Relative Rotation Graphs® (RRGs®) visualize trends in relative strength/performance of multiple securities in a universe versus a common benchmark (and each other). RRGs are described by the vendor as applicable across asset classes (e.g., stock indexes, stock sectors, individual stocks, bonds, (crypto)-currencies, and asset allocation). RRG Online: vendor-run web implementation built in cooperation with Optuma, positioned as a "lightweight" version with limited functionality and pre-defined universes. RRG Online universes/benchmarks (examples listed by the vendor) include S&P 500 sectors vs S&P 500, AEX stocks vs AEX, ASX sectors vs ASX, Euro STOXX 50 stocks vs Euro STOXX 50, STOXX European sectors vs STOXX 600, Jakarta IDX stocks vs IDX, crypto vs BTC/USD, and G10 FX/currency pairs. RRG Online interaction features include toggling securities on/off, setting trail length, zooming/dragging, snapping axes, and playing/animating historical rotation via a slider or play button. RRG Online pricing: subscription starting from $10/month; marketed as "light weight", "interactive", with "selected universes" and "limited functionality".
Tested Verified by hands-on testing inside Find My Moat	Not yet	Not yet
Editor pick Featured inside curated shortlists	Standard listing	Standard listing

Frequently Asked Questions

Which workflows do marketstack and Relative Rotation Graphs® (RRG Research) 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.

Which tool offers a free plan?

marketstack offers a free entry point, while Relative Rotation Graphs® (RRG Research) requires a paid subscription. Review the pricing table to see how the paid tiers compare.

How can you access marketstack and Relative Rotation Graphs® (RRG Research)?

Both marketstack and Relative Rotation Graphs® (RRG Research) 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?

marketstack differentiates itself with RESTful JSON API with secure API key access, HTTPS transport, and a 5 requests/sec global limit., End-of-day data with 15+ years of history across 500,000+ tickers, including MIC-level filtering and adjusted fields (open, close, volume)., and Intraday data for U.S. markets via IEX, with intervals from 1–60 minutes. Real-time reference prices are derived from IEX feeds; some fields require separate entitlements., whereas Relative Rotation Graphs® (RRG Research) stands out for Relative Rotation Graphs® (RRGs®) visualize trends in relative strength/performance of multiple securities in a universe versus a common benchmark (and each other)., RRGs are described by the vendor as applicable across asset classes (e.g., stock indexes, stock sectors, individual stocks, bonds, (crypto)-currencies, and asset allocation)., and RRG Online: vendor-run web implementation built in cooperation with Optuma, positioned as a "lightweight" version with limited functionality and pre-defined universes..

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