★ BEST INVESTING TOOLS COMPARISON ★
VOL. XCIV, NO. 247
Source check: Marketstack checked August 4, 2026
Tool Comparison
GuruFocus vs Marketstack
Start here
GuruFocus
Free • From $549/yr · Web · Mobile · API
- You do a lot of your research from your phone
- You care about stock ideas, screeners, and ETF screeners, things Marketstack doesn't offer
- You're newer to investing and want something approachable
Pick Marketstack instead if
Marketstack
Free • From $9.99/mo · Web · API
- You want the cheaper way in: plans start at $9.99/mo instead of $45.75/mo
- Delayed quotes won't cut it; you need real-time data
Skip both if: Neither one clicks with how you research; there are strong third options.
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Our take
The bottom line
GuruFocus and Marketstack cover a lot of the same ground (5 shared categories, including APIs & data feeds, dividends, and splits), so for the basics you won't go far wrong with either. GuruFocus simply does more: 49 categories to Marketstack's 5, including stock ideas, screeners, and ETF screeners, plus a mobile app. Marketstack counters by starting cheaper at $9.99/mo.
What readers say
GuruFocus
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Marketstack
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Key differences at a glance
- Cheaper paid plan
- Marketstack$9.99/mo vs $45.75/mo
- Free trial
- GuruFocus7 days
- Broader coverage
- GuruFocus49 vs 5 categories
- Mobile app
- GuruFocus
- Real-time data
- Marketstack
- Broker sync
- GuruFocus
See for yourself
How they stack up
The side-by-side table: pricing, platforms, data, and coverage at a glance.ShowHide
How they stack up
The side-by-side table: pricing, platforms, data, and coverage at a glance.| Attribute | ||
|---|---|---|
| Pricing & plans | ||
Starting price | Free • From $549/yr | Free • From $9.99/mo |
Free tier | Yes | Yes |
Free trial | 7 days | — |
Plan limits | 49 limits: Free: portfolio limit: Up to 3 portfolios with 25 stocks each for free members, Free: data api requests: 100/month included in the Free API package +47 more | 12 limits: Free: requests per month: 100, Free: history: 1 year +10 more |
| Platforms & access | ||
Web app | Yes | Yes |
Mobile app | Yes | No |
API access | Yes | Yes |
Broker sync | Yes | No |
Integrations | GuruFocus Data API, GuruFocus MCP Server +3 more | — |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Intermediate, Advanced |
Best for | Retail Traders, Pro Retail +9 more | Quants/Developers, Analysts +2 more |
Categories covered | 49 | 5 |
Regions | North America, Europe, APAC, LatAm, Middle East, Africa | North America, Europe, APAC, LatAm, Middle East, Africa |
| Data & capabilities | ||
Data quality | 5 signals: Latency: End of Day, Granularity: EOD +3 more | 4 signals: Latency: End of Day and Real-time, Granularity: EOD and Minute +2 more |
Data partners | 5 partners: QuoteMedia, Morningstar +3 more | Tiingo |
Capabilities | 9 signals: Custom formulas, Ranking backtests +7 more | — |
Security | Status page and Encryption in transit | Status page and Encryption in transit |
| Try it | Visit GuruFocus | Visit Marketstack |
Where each one shines
What GuruFocus and Marketstack each do best.ShowHide
Where each one shines
What GuruFocus and Marketstack each do best.What GuruFocus does best
- Research coverage for global stocks with long historical financials, valuation data, charts, comparisons, market valuation indicators, economic indicators, industry data, and company-level fundamentals.
- The All-in-One Screener with hundreds of filters across fundamentals, valuation, profitability, growth, dividends, guru holdings, insider trades, predefined value screens, custom filters, saved screens, and downloads.
- ETF Screener and ETF GF Scores for filtering and comparing more than 5,000 U.S.
- Corporate and government bond screening by yield, maturity, ratings, coupon structure, outstanding amount, issuer, and industry, plus company-level bond tabs.
- Backtest screener strategies across many countries with configurable stock count, ranking metric, sort order, date range, and rebalance frequency; current membership terms give Premium the latest five years and Premium Plus/Professional history back to 2006.
What Marketstack does best
- V2 REST/JSON endpoints with API-key authentication for market data and reference data workflows.
- Starting point: end-of-day prices, adjusted fields, splits, dividends, ticker metadata, exchange metadata, currencies, and timezones.
- Historical date ranges for EOD history, with deeper history available on paid tiers.
- Intraday bar intervals down to one minute where plan access and endpoint limits allow.
- Upgrade to Professional or higher for real-time-style updates, real-time stock price endpoints, and commodities endpoints.
Every detail we compared
Every tracked attribute for GuruFocus and Marketstack, side by side.ShowHide
Every detail we compared
Every tracked attribute for GuruFocus and Marketstack, side by side.| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | StocksETFsBondsMutual FundsOptionsFundsOther | StocksETFsBondsCommoditiesOther |
Experience | BeginnerIntermediateAdvanced | IntermediateAdvanced |
Target audience | Retail TradersPro RetailLong-term InvestorsValue InvestorsQuality InvestorsDividend InvestorsAnalystsQuants/Developers+3 more | Quants/DevelopersAnalystsInstitutional InvestorsStudents/Researchers |
Regions | North AmericaEuropeAPACLatAmMiddle EastAfrica | North AmericaEuropeAPACLatAmMiddle EastAfrica |
Coverage details | Identifiers: Ticker and CIK | Identifiers: Ticker, CIK, ISIN, and CUSIP |
| Data | ||
Data freshness | End of Day | End of DayReal-time |
Data granularity | EOD | EODMinute |
Pricing sources | ExchangeVendorModel | Not specified |
Data partners | QuoteMediaMorningstarRefinitivFREDSEC / local regulators | Tiingo |
| Access & integrations | ||
API protocols | REST | REST |
API auth & delivery | Auth: APIKeySDKs: Python and GoDocs | Auth: APIKeyDocs |
Import methods | CSVBrokerOAuthManual | Not specified |
Integrations | GuruFocus Data APIGuruFocus MCP ServerGuruFocus Excel Add-inGuruFocus Google Sheets Add-onSnapTrade | Not specified |
Export formats | CSVExcelJSON | Not specified |
| Plans & trust | ||
Security & compliance | Status pageEncryption in transit | Status pageEncryption in transit |
Capability signals | Custom formulasRanking backtestsUniverse builderFactors: Value, Quality, Momentum, and GrowthBroker syncMulti-currencyYield curvesCredit ratings+1 more | Not specified |
Vendor & support | GuruFocus.com, LLCCountry: United StatesFounded 2004Support: Email, Chat, Phone, and Forum | APILayerFounded 2018Support: Email |
Green tags are exclusive to that tool in this comparison.
What you'll actually pay
Plans, billing, trials, and per-month pricing for both tools.ShowHide
What you'll actually pay
Plans, billing, trials, and per-month pricing for both tools.| Tier | ||
|---|---|---|
| Free plan | Freeportfolio limit: Up to 3 portfolios with 25 stocks each for free members · data api requests: 100/month included in the Free API package · +1 more | Freerequests per month: 100 · history: 1 year · +1 more |
| Entry paid plan | $549/yr≈ $45.75/mo“Premium”billing: Annual only · data api requests: 200/month included with Premium membership · +2 more | $9.99/mo“Basic”requests per month: 10,000 · overage per request usd: 0.004 · +2 more |
| Tier 2 | $1398/yr≈ $116.50/mo“Premium Plus”billing: Annual only · data api requests: 500/month included with Premium Plus membership · +2 more | $49.99/mo“Professional”requests per month: 100,000 · overage per request usd: 0.002 · +1 more |
| Tier 3 | $200/mo“Data API Builder”billing: Billed annually · monthly request limit: No limit · +12 more | $149.99/mo“Business”requests per month: 500,000 · overage per request usd: 0.001 |
| Tier 4 | $2448/yr≈ $204/mo“Professional”billing: Annual only · data api requests: 2,000/month included with Professional membership | — |
| Tier 5 | $2000/mo“Data API Commercial”billing: Billed annually · monthly request limit: No limit · +1 more | — |
| Top plan | $100 per unit“Data API Pay As You Go”initial top up: $100 credit · stock daily prices: $0.05/request · +16 more | — |
| Custom / enterprise | Contact sales“Custom API / Enterprise Package” | Contact sales“Enterprise” |
| Free trial | 7 days | — |
Questions we keep getting
What's the difference between GuruFocus and Marketstack?
GuruFocus leans toward stock ideas, screeners, and ETF screeners, while Marketstack puts more weight on APIs & data feeds, dividends, and splits. They overlap in 5 categories, so for most people it comes down to workflow preference and price.
How much do GuruFocus and Marketstack cost?
Good news: both GuruFocus and Marketstack have free plans, so you can run them side by side and only pay if you hit a wall.
Which is better for beginners: GuruFocus or Marketstack?
GuruFocus is the friendlier place to start; its interface takes less getting used to. Both work fine once you're past the basics.
Can I use GuruFocus or Marketstack on my phone?
GuruFocus lists a dedicated mobile app, so it travels better. Marketstack doesn't list a dedicated mobile app; its documented access is web and API.
Do GuruFocus and Marketstack have APIs?
Yes, both offer API access, so developers and quants can pull data programmatically or wire up their own integrations.
Should I choose GuruFocus or Marketstack?
It depends on what you're after. Pick GuruFocus if stock ideas and screeners matter to you; go with Marketstack if you prefer its overall approach. And if you only need the basics both share, let price decide.
What asset classes do GuruFocus and Marketstack cover?
Both cover stocks, ETFs, bonds, and other. GuruFocus also handles mutual funds, options, and funds. Marketstack adds commodities on top.
Does GuruFocus or Marketstack have real-time data?
Marketstack offers real-time data, which matters if you trade actively. GuruFocus runs on delayed or end-of-day data, which is perfectly fine for longer-term investors who don't live and die by the tick.
Can I export data from GuruFocus and Marketstack?
GuruFocus exports to CSV and Excel. Marketstack is stingier about getting data out.
Can GuruFocus or Marketstack connect to my broker?
GuruFocus syncs with brokers automatically. With Marketstack, you're entering holdings by hand or importing files.
Which has a better stock screener: GuruFocus or Marketstack?
GuruFocus has a stock screener for surfacing ideas; Marketstack doesn't, and focuses its energy elsewhere.
Can I track my portfolio with GuruFocus or Marketstack?
GuruFocus handles portfolio tracking. Marketstack is really a research tool; you'd track your portfolio elsewhere.
Keep researching
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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.