★ BEST INVESTING TOOLS COMPARISON ★
VOL. XCIV, NO. 247
Tool comparison edition
Tool Comparison
Fintel vs Marketstack
Start here
Fintel
Best for short interest and insider data
Free • Paid plans available · Web · API · 67% positive (3 votes)
- 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
Best for splits and analyst ratings & price targets
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.
The verdict
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.
Key differences at a glance
- Broker sync
- Fintel
- Broader coverage
- Fintel14 vs 5 categories
- Beginner friendly
- Fintel
- Free plan
- Both
Comparison snapshot
| 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 |
Standout features
What Fintel does best
- Research official short-interest data sourced from NASDAQ and NYSE on individual ticker pages.
- Review off-exchange and dark pool short volume from FINRA feeds when analyzing trading activity and squeeze risk.
- Track ownership through 13F, 13D/G, NPORT, ETF and mutual-fund holders, UK disclosure data, and dedicated ETF-exposure pages.
- Monitor insider trading from Forms 3, 4, and 5, including real-time alerts and identification of 10b5-1 trading plans.
- Use unusual options activity, options sentiment, and real-time options flow on eligible premium tiers.
What Marketstack does best
- Use V2 REST/JSON endpoints with API-key authentication for market data and reference data workflows.
- Start with end-of-day prices, adjusted fields, splits, dividends, ticker metadata, exchange metadata, currencies, and timezones.
- Use historical date ranges for EOD history, with deeper history available on paid tiers.
- Use 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.
Data & access details
| 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.
Pricing breakdown
Free
Lower starting price
Plans & pricing
$9.99/mo
Starting price
Plans & pricing
- requests per month: 100
- history: 1 year
- +1 more
- requests per month: 10,000
- overage per request usd: 0.004
- +2 more
- requests per month: 100,000
- overage per request usd: 0.002
- +1 more
- requests per month: 500,000
- overage per request usd: 0.001
Coverage overlap
Shared categories
3Where the two tools cover the same ground.
Fintel strengths
11Marketstack strengths
2What you only get with Marketstack.
Community category leaders
Vote sentiment comparison
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Frequently Asked Questions
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.
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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.