VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Thursday, December 4, 2025

Tool Comparison

Koyfin vs marketstack comparison

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

Quick takeaways

Koyfin adds Portfolio, Watchlist, Screeners, ETF Screeners, Financials, Analyst Forecasts, Transcripts, ETF Overview, ETF Performance, ETF Fundamentals, ETF Valuation, ETF Overlap, Short Interest, News, Alerts, Calendar, Data Visualizations, Yield Curves, GDP, Inflation Rates, and Unemployment Rates coverage that marketstack skips.

marketstack includes Data APIs, Splits, and APIs & SDKs categories that Koyfin omits.

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

In depth comparison

Koyfin

koyfin.com

Editor’s pick Hands-on review

Web-first research & portfolio-analytics terminal with global multi-asset coverage, advanced charting, powerful screeners, and advisor-focused model/client portfolio tooling. Strong for fundamental and macro workflows across stocks, ETFs, mutual funds and global yields, with custodian integrations and client-reporting features on advisor tiers. No public data API; data exports are constrained by vendor licenses.

Platforms

WebMobile

Pricing

FreeSubscription

Quick highlights

Global multi‑asset coverage for stocks, ETFs, mutual funds, closed‑end funds, indices, FX, futures, government bond yields, commodities, cryptocurrencies and macroeconomic series in a single terminal.
Security snapshot pages combining real‑time/15‑minute delayed pricing with financial statements, valuation ratios, analyst estimates, dividend metrics, news, filings, and transcripts.
Historical Graph (G) module for multi‑panel chart layouts, 300+ data fields (price, fundamentals, estimates, flows, technicals), templates, annotations, and scatter plots with regression line & R².
Equity Screener with ~100k global stocks and thousands of filters (fundamentals, valuation, growth, estimates, performance, technicals, percentile ranks), plus dedicated ETF and mutual fund screeners.
Custom Formulas and Custom Data Series to build derived columns in tables and ingest external price series (e.g., private funds, real estate, custom indices) that plug into charts, watchlists, portfolios and exposures.

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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

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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Where they differ

Koyfin

Distinct strengths include:

Portfolio Watchlist Screeners ETF Screeners Financials Analyst Forecasts Transcripts ETF Overview

Global multi‑asset coverage for stocks, ETFs, mutual funds, closed‑end funds, indices, FX, futures, government bond yields, commodities, cryptocurrencies and macroeconomic series in a single terminal.
Security snapshot pages combining real‑time/15‑minute delayed pricing with financial statements, valuation ratios, analyst estimates, dividend metrics, news, filings, and transcripts.
Historical Graph (G) module for multi‑panel chart layouts, 300+ data fields (price, fundamentals, estimates, flows, technicals), templates, annotations, and scatter plots with regression line & R².
Equity Screener with ~100k global stocks and thousands of filters (fundamentals, valuation, growth, estimates, performance, technicals, percentile ranks), plus dedicated ETF and mutual fund screeners.

marketstack

Distinct strengths include:

Data APIs Splits APIs & SDKs

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	Koyfin	marketstack
Categories Which research workflows each platform targets	Shared: Dividends, Analyst Recommendations, Analyst Price Targets, ETF Holdings, Interest Rates Unique: Portfolio, Watchlist, Screeners, ETF Screeners, Financials, Analyst Forecasts, Transcripts, ETF Overview, ETF Performance, ETF Fundamentals, ETF Valuation, ETF Overlap, Short Interest, News, Alerts, Calendar, Data Visualizations, Yield Curves, GDP, Inflation Rates, Unemployment Rates	Shared: Dividends, Analyst Recommendations, Analyst Price Targets, ETF Holdings, Interest Rates Unique: Data APIs, Splits, APIs & SDKs
Asset types Supported asset classes and universes	Stocks, ETFs, Mutual Funds, Closed-End Funds, Bonds, Futures, Commodities, Currencies, Cryptos, Options, 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	Web, API
Pricing High-level pricing models	Free, Subscription	Free, Subscription
Key features Core capabilities called out by each vendor	Unique Global multi‑asset coverage for stocks, ETFs, mutual funds, closed‑end funds, indices, FX, futures, government bond yields, commodities, cryptocurrencies and macroeconomic series in a single terminal. Security snapshot pages combining real‑time/15‑minute delayed pricing with financial statements, valuation ratios, analyst estimates, dividend metrics, news, filings, and transcripts. Historical Graph (G) module for multi‑panel chart layouts, 300+ data fields (price, fundamentals, estimates, flows, technicals), templates, annotations, and scatter plots with regression line & R². Equity Screener with ~100k global stocks and thousands of filters (fundamentals, valuation, growth, estimates, performance, technicals, percentile ranks), plus dedicated ETF and mutual fund screeners. Custom Formulas and Custom Data Series to build derived columns in tables and ingest external price series (e.g., private funds, real estate, custom indices) that plug into charts, watchlists, portfolios and exposures. My Dashboards & Macro Dashboards to assemble fully customizable workspaces mixing graphs, tables, macro tiles, news, transcripts, portfolios and model portfolios.	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 Koyfin and marketstack both support?

Both platforms cover Dividends, Analyst Recommendations, Analyst Price Targets, ETF Holdings, and Interest Rates workflows, so you can research those use cases in either tool before digging into the feature differences below.

Do Koyfin and marketstack require subscriptions?

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

Which tool has mobile access?

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

What unique strengths set the two platforms apart?

Koyfin differentiates itself with Global multi‑asset coverage for stocks, ETFs, mutual funds, closed‑end funds, indices, FX, futures, government bond yields, commodities, cryptocurrencies and macroeconomic series in a single terminal., Security snapshot pages combining real‑time/15‑minute delayed pricing with financial statements, valuation ratios, analyst estimates, dividend metrics, news, filings, and transcripts., and Historical Graph (G) module for multi‑panel chart layouts, 300+ data fields (price, fundamentals, estimates, flows, technicals), templates, annotations, and scatter plots with regression line & R²., 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..

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