VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Monday, October 6, 2025

View GuruFocus View marketstack Back to Home

Head-to-head

GuruFocus vs marketstack comparison

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

Quick takeaways

GuruFocus adds Screeners, Stock Ideas, Stock Comparison, Portfolio, Backtesting, Investor Holdings, US Government Trades, News, Alerts, Calendar, GDP, Inflation Rates, Unemployment Rates, Commitment of Traders (COT), Yield Curves, Financials, Valuation Models, Scores, Transcripts, Insider Data, 13F, ETF Overview, and Sheets / Excel Add-ins coverage that marketstack skips.

marketstack includes Data APIs, Dividends, Splits, Analyst Recommendations, and Analyst Price Targets categories that GuruFocus omits.

GuruFocus highlights: All-in-One Screener with hundreds of filters, historical screening, and custom filter creation., Backtesting with survivorship-bias-free data. Windows vary by plan: up to 3 years for Premium and up to 10 years for Premium Plus. Global coverage spans 80+ countries., and Guru portfolios tracking 13F and mutual fund holdings, real-time picks, and portfolio downloads to Excel..

marketstack is known for: 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..

GuruFocus ships a mobile app. marketstack is web/desktop only.

GuruFocus

gurufocus.com

Editor’s pick Hands-on review

A global equity research and value-investing platform with robust screening, backtesting, and portfolio tools. Features and data access depend on plan tier—Premium vs. Premium Plus—while enterprise-level users can license data directly via API. Add-ins for Excel and Google Sheets extend workflows, though usage caps apply to lower tiers. Alerts and mobile apps are included across paid plans.

Platforms

Web

Mobile

API

Pricing

Free

Subscription

Quick highlights

All-in-One Screener with hundreds of filters, historical screening, and custom filter creation.
Backtesting with survivorship-bias-free data. Windows vary by plan: up to 3 years for Premium and up to 10 years for Premium Plus. Global coverage spans 80+ countries.
Guru portfolios tracking 13F and mutual fund holdings, real-time picks, and portfolio downloads to Excel.
Specialty trackers for insider trading and U.S. politician trades.
ETF profiles with current and historical holdings, including N-PORT data and timestamps.

Community votes (overall)

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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

Web

API

Pricing

Free

Subscription

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.

Community votes (overall)

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Overlap

Shared focus areas

3 overlaps

Mutual strengths include Interest Rates, ETF Holdings, and APIs & SDKs.

Where they differ

GuruFocus

Distinct strengths include:

All-in-One Screener with hundreds of filters, historical screening, and custom filter creation.
Backtesting with survivorship-bias-free data. Windows vary by plan: up to 3 years for Premium and up to 10 years for Premium Plus. Global coverage spans 80+ countries.
Guru portfolios tracking 13F and mutual fund holdings, real-time picks, and portfolio downloads to Excel.
Specialty trackers for insider trading and U.S. politician trades.

marketstack

Distinct strengths include:

Data APIs

Dividends

Splits

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).

Feature-by-feature breakdown

Attribute	GuruFocus	marketstack
Categories Which research workflows each platform targets	Shared: Interest Rates, ETF Holdings, APIs & SDKs Unique: Screeners, Stock Ideas, Stock Comparison, Portfolio, Backtesting, Investor Holdings, US Government Trades, News, Alerts, Calendar, GDP, Inflation Rates, Unemployment Rates, Commitment of Traders (COT), Yield Curves, Financials, Valuation Models, Scores, Transcripts, Insider Data, 13F, ETF Overview, Sheets / Excel Add-ins	Shared: Interest Rates, ETF Holdings, APIs & SDKs Unique: Data APIs, Dividends, Splits, Analyst Recommendations, Analyst Price Targets
Asset types Supported asset classes and universes	Stocks, ETFs, Mutual Funds	Stocks, ETFs, Bonds, Commodities
Experience levels Who each product is built for	Beginner, Intermediate, Advanced	Intermediate, Advanced
Platforms Where you can access the product	Web, Mobile, API	Web, API
Pricing High-level pricing models	Free, Subscription	Free, Subscription
Key features Core capabilities called out by each vendor	Unique All-in-One Screener with hundreds of filters, historical screening, and custom filter creation. Backtesting with survivorship-bias-free data. Windows vary by plan: up to 3 years for Premium and up to 10 years for Premium Plus. Global coverage spans 80+ countries. Guru portfolios tracking 13F and mutual fund holdings, real-time picks, and portfolio downloads to Excel. Specialty trackers for insider trading and U.S. politician trades. ETF profiles with current and historical holdings, including N-PORT data and timestamps. Valuation and scoring tools: discounted cash flow calculators, GF Value, and GF Score frameworks.	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.
Tested Verified by hands-on testing inside Find My Moat	Yes	Not yet
Editor pick Featured inside curated shortlists	Highlighted	Standard listing

Frequently Asked Questions

Which workflows do GuruFocus and marketstack both support?

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

Do GuruFocus and marketstack require subscriptions?

Both GuruFocus and marketstack keep freemium access with optional paid upgrades, so you can trial each platform before committing.

Which tool has mobile access?

GuruFocus ships a dedicated mobile experience, while marketstack focuses on web or desktop access.

What unique strengths set the two platforms apart?

GuruFocus differentiates itself with All-in-One Screener with hundreds of filters, historical screening, and custom filter creation., Backtesting with survivorship-bias-free data. Windows vary by plan: up to 3 years for Premium and up to 10 years for Premium Plus. Global coverage spans 80+ countries., and Guru portfolios tracking 13F and mutual fund holdings, real-time picks, and portfolio downloads to Excel., whereas marketstack stands out for 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..

Keep exploring

Stay on top of related tools

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