VOL. XCIV, NO. 247
BEST INVESTING TOOLS COMPARISON
Tool details checked August 23, 2026
Tool Comparison
Koyfin vs Short Interest - FMM
Start here
Koyfin
Free • From $468/yr · Web · Mobile
- Delayed quotes won't cut it; you need real-time data
- You do a lot of your research from your phone
- You want ETF screeners, data visualizations, and custom dashboards.
Pick Short Interest - FMM instead if
Short Interest - FMM
Free · Web
- Go this way if it's completely free.
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
Koyfin and Short Interest - FMM cover a lot of the same ground (2 shared categories, screeners and short interest), so for the basics you won't go far wrong with either. Koyfin simply does more: 20 categories to Short Interest - FMM's 2, including ETF screeners, data visualizations, and custom dashboards, plus a mobile app. Short Interest - FMM counters by being completely free.
What readers say
Koyfin
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Short Interest - FMM
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Key differences at a glance
- Real-time data
- Koyfin
- Broader coverage
- Koyfin20 vs 2 categories
- Mobile app
- Koyfin
- Broker sync
- Koyfin
- Global coverage
- Koyfin
- Asset coverage
- KoyfinAdds ETFs and mutual funds
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 $468/yr | Free |
Free tier | Yes | Yes |
Free trial | — | — |
Plan limits | 24 limits: Free: watchlists: 2, Free: screens: 2 +22 more | — |
| Platforms & access | ||
Web app | Yes | Yes |
Mobile app | Yes | No |
API access | No | No |
Broker sync | Yes | No |
Integrations | Schwab, Altruist +6 more | — |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Best for | Retail Traders, Pro Retail +6 more | — |
Categories covered | 20 | 2 |
Regions | North America, Europe, APAC, LatAm, Middle East, Africa | North America |
| Data & capabilities | ||
Data quality | Latency: Real-time, 15-min Delayed, and End of Day and Adjustments: TotalReturn | — |
Data partners | 6 partners: S&P Global Market Intelligence, Morningstar +4 more | — |
Capabilities | 7 signals: Universe builder, Broker sync +5 more | — |
Security | 4 signals: SOC2, Data residency: US +2 more | — |
| Try it | Visit Koyfin | Visit Short Interest - FMM |
Where each one shines
What Koyfin and Short Interest - FMM each do best.ShowHide
Where each one shines
What Koyfin and Short Interest - FMM each do best.What Koyfin does best
- Tools for building customizable dashboards, watchlists, charts, and market monitors across global equities, ETFs, funds, fixed income, FX, commodities, crypto, indices, and economics.
- Screening for more than 100,000 global securities with thousands of criteria, with stock and ETF screening on paid plans and mutual-fund screening in Advisor tiers.
- Advanced charts with technical indicators, fundamentals, valuation measures, analyst estimates, price targets, templates, sharing, and downloads where vendor licenses allow.
- Research coverage for companies with financial analysis pages, customizable financial templates, news, filings, transcripts, analyst data, short interest, and AI transcript summaries on paid plans.
- Tracking portfolios with grouping, notes, summary rows, alerts, custom data series, uploaded CSV price history, and mobile portfolio monitoring.
What Short Interest - FMM does best
- Screen U.S. stocks with short interest above 20% in a free web table.
- Sort by short interest percentage, ticker, company, exchange, float, shares outstanding, or industry.
- Search by ticker or company name.
- Use preset filters for short-interest thresholds, float size, and exchange groups.
- Compare relative short-interest levels with inline bars.
Every detail we compared
Every tracked attribute for Koyfin and Short Interest - FMM, side by side.ShowHide
Every detail we compared
Every tracked attribute for Koyfin and Short Interest - FMM, side by side.| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | StocksETFsMutual FundsClosed-End FundsBondsCurrenciesCommoditiesFutures+1 more | Stocks |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Target audience | Retail TradersPro RetailInstitutional InvestorsAnalystsAsset ManagersFinancial AdvisorsRIAs / Wealth FirmsStudents/Researchers | Not specified |
Regions | North AmericaEuropeAPACLatAmMiddle EastAfrica | North America |
Coverage details | Identifiers: Ticker | Countries: USExchanges: XNAS, XNYS, and XASEIdentifiers: Ticker |
| Data | ||
Data freshness | Real-time15-min DelayedEnd of Day | Not specified |
Data partners | S&P Global Market IntelligenceMorningstarFREDTrading EconomicsTrueFXPolygon.io | Not specified |
| Access & integrations | ||
Import methods | ManualCSVCustodian | Not specified |
Integrations | SchwabAltruistTradePMRInteractive BrokersBlack DiamondOrionFidelityAddepar | Not specified |
Export formats | CSVImagePDF | Not specified |
| Plans & trust | ||
Security & compliance | SOC2Data residency: USEncryption at restEncryption in transit | Not specified |
Capability signals | Universe builderBroker syncYield curvesAI summaries: TranscriptsHouseholdingModel portfoliosClient reporting | Not specified |
Vendor & support | Koyfin, Inc.Country: United StatesFounded 2016Support: Email | 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 | Freewatchlists: 2 · screens: 2 · +5 more | Free |
| Entry paid plan | $468/yr≈ $39/mo“Plus”financials years: 10 · estimates years: 10 · +5 more | — |
| Tier 2 | $948/yr≈ $79/mo“Premium”alerts: 500 · custom securities: Unlimited | — |
| Tier 3 | $2508/yr≈ $209/mo“Advisor Core”alerts: 500 · reports per month: 10 · +2 more | — |
| Top plan | $3588/yr≈ $299/mo“Advisor Pro”alerts: 500 · reports per month: 200 · +2 more | — |
| Custom / enterprise | Contact sales“Teams” | — |
Questions we keep getting
What's the difference between Koyfin and Short Interest - FMM?
Koyfin leans toward screeners, ETF screeners, and data visualizations, while Short Interest - FMM puts more weight on short interest and screeners. They overlap in 2 categories, so for most people it comes down to workflow preference and price.
How much do Koyfin and Short Interest - FMM cost?
Good news: both Koyfin and Short Interest - FMM have free plans, so you can run them side by side and only pay if you hit a wall.
Can I use Koyfin or Short Interest - FMM on my phone?
Koyfin lists a dedicated mobile app, so it travels better. Short Interest - FMM doesn't list a dedicated mobile app; its documented access is web.
Should I choose Koyfin or Short Interest - FMM?
It depends on what you're after. Pick Koyfin if ETF screeners and data visualizations matter to you; go with Short Interest - FMM if you prefer its overall approach. And if you only need the basics both share, let price decide.
What asset classes do Koyfin and Short Interest - FMM cover?
Both cover stocks. Koyfin also handles ETFs, mutual funds, and closed-end funds.
Does Koyfin or Short Interest - FMM have real-time data?
Koyfin offers real-time data, which matters if you trade actively. Short Interest - FMM 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.
Which covers international markets: Koyfin or Short Interest - FMM?
Koyfin has documented international coverage (North America, Europe, APAC, LatAm, and more), so it's the safer bet if you hold non-US stocks. Short Interest - FMM is more region-specific, mainly North America.
Can I export data from Koyfin and Short Interest - FMM?
Koyfin exports to CSV. Short Interest - FMM is stingier about getting data out.
Can Koyfin or Short Interest - FMM connect to my broker?
Koyfin syncs with brokers automatically. With Short Interest - FMM, you're entering holdings by hand or importing files.
Which has a better stock screener: Koyfin or Short Interest - FMM?
Both Koyfin and Short Interest - FMM include stock screeners, and they differ more in interface than raw power; try both and see which one clicks for you.
Can I track my portfolio with Koyfin or Short Interest - FMM?
Koyfin handles portfolio tracking. Short Interest - FMM is really a research tool; you'd track your portfolio 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.