VOL. XCIV, NO. 247
BEST INVESTING TOOLS COMPARISON
Tool details checked August 23, 2026
Tool Comparison
MarketInOut vs Short Interest - FMM
Start here
MarketInOut
Free • From $359 · Web
- Delayed quotes won't cut it; you need real-time data
- You want backtesting, watchlist, and portfolio.
Pick Short Interest - FMM instead if
Short Interest - FMM
Free · Web
- You want short interest.
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
MarketInOut simply does more: 7 categories to Short Interest - FMM's 2, including backtesting, watchlist, and portfolio. Short Interest - FMM counters by being completely free. On paper they're closely matched, so let pricing, platform fit, and the details below break the tie.
What readers say
MarketInOut
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Short Interest - FMM
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Key differences at a glance
- Real-time data
- MarketInOut
- Free trial
- MarketInOut7 days
- Broader coverage
- MarketInOut7 vs 2 categories
- Global coverage
- MarketInOut
- Asset coverage
- MarketInOutAdds ETFs and currencies
- 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 • From $359 | Free |
Free tier | Yes | Yes |
Free trial | 7 days | — |
| Platforms & access | ||
Web app | Yes | Yes |
Mobile app | No | No |
API access | No | No |
Broker sync | No | No |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Best for | — | — |
Categories covered | 7 | 2 |
Regions | North America, Europe, APAC, Middle East | North America |
| Data & capabilities | ||
Data quality | 5 signals: Latency: Real-time, 15-min Delayed, and End of Day, Granularity: Minute and EOD +3 more | — |
Capabilities | Custom formulas and Universe builder | — |
| Try it | Visit MarketInOut | Visit Short Interest - FMM |
Where each one shines
What MarketInOut and Short Interest - FMM each do best.ShowHide
Where each one shines
What MarketInOut and Short Interest - FMM each do best.What MarketInOut does best
- Technical and fundamental screening across more than 30 exchanges, stocks, ETFs, forex, and crypto.
- Filters by exchange, sector, industry, index, or watchlist, with intraday, daily, weekly, and monthly timeframes where supported.
- Formula Screener conditions with AND, OR, NOT logic, multi-timeframe rules, historical and range screening, ticker references, index references, and regime filters.
- Strategy backtests with entry rules, exit rules, stop-loss, take-profit, and position-maintenance logic.
- Survivorship-bias-free backtesting data that includes delisted stocks.
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 MarketInOut and Short Interest - FMM, side by side.ShowHide
Every detail we compared
Every tracked attribute for MarketInOut and Short Interest - FMM, side by side.| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | StocksETFsCurrenciesCryptos | Stocks |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Regions | North AmericaEuropeAPACMiddle East | 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 granularity | MinuteEOD | Not specified |
| Access & integrations | ||
Export formats | Excel | Not specified |
| Plans & trust | ||
Capability signals | Custom formulasUniverse builder | Not specified |
Vendor & support | MarketInOut LimitedSupport: Email | Not specified |
Curation ratings | Methodology 3/5Reliability 3/5UX 3/5 | 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 |
| Entry paid plan | $359“2-Year Membership” | — |
| Tier 2 | $259/yr≈ $21.58/mo“1-Year Membership” | — |
| Top plan | $159“6-Month Membership” | — |
| Free trial | 7 days | — |
Questions we keep getting
What's the difference between MarketInOut and Short Interest - FMM?
MarketInOut leans toward screeners, backtesting, and watchlist, while Short Interest - FMM puts more weight on short interest and screeners. They overlap in 1 categories, so for most people it comes down to workflow preference and price.
How much do MarketInOut and Short Interest - FMM cost?
Good news: both MarketInOut and Short Interest - FMM have free plans, so you can run them side by side and only pay if you hit a wall.
Should I choose MarketInOut or Short Interest - FMM?
It depends on what you're after. Pick MarketInOut if backtesting and watchlist matter to you; go with Short Interest - FMM if you'd rather have short interest. And if you only need the basics both share, let price decide.
What asset classes do MarketInOut and Short Interest - FMM cover?
Both cover stocks. MarketInOut also handles ETFs, currencies, and cryptos.
Does MarketInOut or Short Interest - FMM have real-time data?
MarketInOut 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: MarketInOut or Short Interest - FMM?
MarketInOut has documented international coverage (North America, Europe, APAC, and Middle East), 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 MarketInOut and Short Interest - FMM?
MarketInOut exports to Excel. Short Interest - FMM is stingier about getting data out.
Which has a better stock screener: MarketInOut or Short Interest - FMM?
Both MarketInOut 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 MarketInOut or Short Interest - FMM?
MarketInOut 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.