★ BEST INVESTING TOOLS COMPARISON ★
VOL. XCIV, NO. 247
Source check: Marketstack checked August 4, 2026
Tool Comparison
Fintel vs Marketstack
Start here
Fintel
Free • Paid plans available · Web · API
- You care about short interest, insider data, and institutional ownership, 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 care about splits and analyst ratings & price targets, things Fintel doesn't offer
Skip both if: Neither one clicks with how you research; there are strong third options.
See alternativesOutbound links may include affiliate or sponsor codes.
Our take
The bottom line
Fintel and Marketstack cover a lot of the same ground (3 shared categories, ETF analysis, APIs & data feeds, and dividends), so for the basics you won't go far wrong with either. Fintel simply does more: 14 categories to Marketstack's 5, including short interest, insider data, and institutional ownership. Marketstack counters by keeping things simpler.
What readers say
Fintel
Vote once to reveal the community verdict.
Marketstack
Vote once to reveal the community verdict.
Key differences at a glance
- Broker sync
- Fintel
- Broader coverage
- Fintel14 vs 5 categories
- Beginner friendly
- Fintel
- Free plan
- Both
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 • Paid plans available | Free • From $9.99/mo |
Free tier | Yes | Yes |
Free trial | — | — |
Plan limits | — | 12 limits: Free: requests per month: 100, Free: history: 1 year +10 more |
| Platforms & access | ||
Web app | Yes | Yes |
Mobile app | No | No |
API access | Yes | Yes |
Broker sync | Yes | No |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Intermediate, Advanced |
Best for | — | Quants/Developers, Analysts +2 more |
Categories covered | 14 | 5 |
Regions | North America, Europe, APAC, Middle East | North America, Europe, APAC, LatAm, Middle East, Africa |
| Data & capabilities | ||
Data quality | Latency: Real-time and End of Day and Granularity: EOD | 4 signals: Latency: End of Day and Real-time, Granularity: EOD and Minute +2 more |
Data partners | — | Tiingo |
Capabilities | 3 signals: Custom formulas, Factors: Value and Quality +1 more | — |
Security | — | Status page and Encryption in transit |
| Try it | Visit Fintel | Visit Marketstack |
Where each one shines
What Fintel and Marketstack each do best.ShowHide
Where each one shines
What Fintel and Marketstack each do best.What Fintel does best
- Research coverage for official short-interest data sourced from NASDAQ and NYSE on individual ticker pages.
- Views for reviewing off-exchange and dark pool short volume from FINRA feeds when analyzing trading activity and squeeze risk.
- Tracking ownership through 13F, 13D/G, NPORT, ETF and mutual-fund holders, UK disclosure data, and dedicated ETF-exposure pages.
- Monitoring insider trading from Forms 3, 4, and 5, including real-time alerts and identification of 10b5-1 trading plans.
- Unusual options activity, options sentiment, and real-time options flow on eligible premium tiers.
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 Fintel and Marketstack, side by side.ShowHide
Every detail we compared
Every tracked attribute for Fintel and Marketstack, side by side.| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | StocksETFsMutual FundsOptionsBonds | StocksETFsBondsCommoditiesOther |
Experience | BeginnerIntermediateAdvanced | IntermediateAdvanced |
Target audience | Not specified | Quants/DevelopersAnalystsInstitutional InvestorsStudents/Researchers |
Regions | North AmericaEuropeAPACMiddle East | North AmericaEuropeAPACLatAmMiddle EastAfrica |
Coverage details | Identifiers: Ticker and ISIN | Identifiers: Ticker, CIK, ISIN, and CUSIP |
| Data | ||
Data freshness | Real-timeEnd of Day | End of DayReal-time |
Data granularity | EOD | EODMinute |
Data partners | Not specified | Tiingo |
| Access & integrations | ||
API protocols | REST | REST |
API auth & delivery | Auth: APIKey | Auth: APIKeyDocs |
Import methods | Plaid | Not specified |
Export formats | Excel | Not specified |
| Plans & trust | ||
Security & compliance | Not specified | Status pageEncryption in transit |
Capability signals | Custom formulasFactors: Value and QualityBroker sync | Not specified |
Vendor & support | Fintel Ventures LLCSupport: Email and Phone | APILayerFounded 2018Support: Email |
Curation ratings | Methodology 3/5Reliability 4/5UX 4/5 | Not specified |
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 | Free“Free public access” | Freerequests per month: 100 · history: 1 year · +1 more |
| Entry paid plan | Subscription“Bronze” | $9.99/mo“Basic”requests per month: 10,000 · overage per request usd: 0.004 · +2 more |
| Tier 2 | Subscription“Silver” | $49.99/mo“Professional”requests per month: 100,000 · overage per request usd: 0.002 · +1 more |
| Top plan | Subscription“Gold” | $149.99/mo“Business”requests per month: 500,000 · overage per request usd: 0.001 |
| Custom / enterprise | — | Contact sales“Enterprise” |
Questions we keep getting
What's the difference between Fintel and Marketstack?
Fintel leans toward short interest, insider data, and institutional ownership, while Marketstack puts more weight on APIs & data feeds, dividends, and splits. They overlap in 3 categories, so for most people it comes down to workflow preference and price.
How much do Fintel and Marketstack cost?
Good news: both Fintel 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: Fintel or Marketstack?
Fintel is the friendlier place to start; its interface takes less getting used to. Both work fine once you're past the basics.
Do Fintel 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 Fintel or Marketstack?
It depends on what you're after. Pick Fintel if short interest and insider data matter to you; go with Marketstack if you'd rather have splits and analyst ratings & price targets. And if you only need the basics both share, let price decide.
What asset classes do Fintel and Marketstack cover?
Both cover stocks, ETFs, and bonds. Fintel also handles mutual funds and options. Marketstack adds commodities and other on top.
Do Fintel and Marketstack offer real-time data?
Yes, both serve real-time market data, so either works when timing matters.
Can I export data from Fintel and Marketstack?
Fintel exports to Excel. Marketstack is stingier about getting data out.
Can Fintel or Marketstack connect to my broker?
Fintel syncs with brokers automatically. With Marketstack, you're entering holdings by hand or importing files.
Which has a better stock screener: Fintel or Marketstack?
Fintel has a stock screener for surfacing ideas; Marketstack doesn't, and focuses its energy elsewhere.
Keep researching
Other tools you might like
Keep Exploring
Feedback
Spot stale pricing, missing features, or a comparison that feels off? Send feedback on the verdict, table, alternatives, or recommendation.
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.