★ BEST INVESTING TOOLS COMPARISON ★
VOL. XCIV, NO. 247
Tool details checked August 23, 2026
Tool Comparison
FactorsToday vs Reflexivity
Pick FactorsToday if
FactorsToday
Free · Web · API
- You care about data visualizations, stock comparison, and factor exposure, things Reflexivity doesn't offer
Pick Reflexivity if
Reflexivity
Free • From $99.99/mo · Web · API
- You care about alerts, news, and calendar, things FactorsToday 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
FactorsToday and Reflexivity cover a lot of the same ground (8 shared categories, including screeners, quant, and performance attribution), so for the basics you won't go far wrong with either. The real difference is focus: only FactorsToday gives you data visualizations and stock comparison, and only Reflexivity gives you alerts and news.
What readers say
FactorsToday
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Reflexivity
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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 | Free • From $99.99/mo |
Free tier | Yes | Yes |
Free trial | — | — |
| Platforms & access | ||
Web app | Yes | Yes |
Mobile app | No | No |
API access | Yes | Yes |
Broker sync | No | No |
| Audience & fit | ||
Experience level | Intermediate, Advanced | Intermediate, Advanced |
Best for | Analysts and Quants/Developers | — |
Categories covered | 13 | 13 |
Regions | — | North America, Europe, APAC, LatAm, Middle East, Africa |
| Data & capabilities | ||
Data quality | 3 signals: Latency: Real-time and End of Day, Granularity: EOD and Minute +1 more | Latency: Real-time and End of Day and Granularity: EOD |
Capabilities | 7 signals: Universe builder, Factors: Value, Quality, Momentum, Growth, LowVol, and Size +5 more | 5 signals: Universe builder, Stress tests: Rates, FX, and EquityCrash +3 more |
Security | — | SOC2 |
| Try it | Visit FactorsToday | Visit Reflexivity |
Where each one shines
What FactorsToday and Reflexivity each do best.ShowHide
Where each one shines
What FactorsToday and Reflexivity each do best.What FactorsToday does best
- Factor dashboards report intraday and multi-period returns, z-scores, pair relationships, correlations, seasonality, and valuations.
- Stock pages use ElasticNet regression with cross-validation to estimate exposures across four nested models.
- Portfolio analysis accepts holdings, compares exposures with a benchmark, and applies user-defined factor-return scenarios.
- Performance attribution applies rolling ordinary-least-squares regressions to uploaded or pasted returns and exports results to Excel.
- The factor builder searches for stocks matching target exposures and displays simulated historical results.
What Reflexivity does best
- AI research workflows over institutional datasets from providers such as S&P Global, LSEG Datastream, Nasdaq, Cboe, and other sources included in the platform.
- Tools for running Deep Research workflows that can analyze data, write and execute code, create research reports, and export data or visualizations.
- Search across filings, transcripts, presentations, central bank documents, and proprietary uploads through Document Intelligence.
- OCR on charts and tables so documents can become searchable and analyzable research inputs.
- Monitor portfolios with real-time alerts, risk and exposure analytics, performance attribution, and daily insight generation.
Every detail we compared
Every tracked attribute for FactorsToday and Reflexivity, side by side.ShowHide
Every detail we compared
Every tracked attribute for FactorsToday and Reflexivity, side by side.| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | StocksETFsMutual FundsClosed-End Funds | StocksETFsBondsCommoditiesCurrencies |
Experience | IntermediateAdvanced | IntermediateAdvanced |
Target audience | AnalystsQuants/Developers | Not specified |
Regions | Not specified | North AmericaEuropeAPACLatAmMiddle EastAfrica |
Coverage details | Identifiers: Ticker | Identifiers: Ticker |
| Data | ||
Data freshness | Real-timeEnd of Day | Real-timeEnd of Day |
Data granularity | EODMinute | EOD |
| Access & integrations | ||
API protocols | REST | Not specified |
API auth & delivery | Auth: None600 req/minDocs | Not specified |
Import methods | CSVManual | CSVManual |
Export formats | CSVExcelJSON | Excel |
| Plans & trust | ||
Security & compliance | Not specified | SOC2 |
Capability signals | Universe builderFactors: Value, Quality, Momentum, Growth, LowVol, and SizeFactor exposurePerformance attributionPortfolio attributionPortfolio factor exposureCorrelation | Universe builderStress tests: Rates, FX, and EquityCrashPortfolio attributionCitation pinningAI summaries: Filings, Transcripts, and News |
Vendor & support | FactorsToday (operated by Lukasz R. Tomicki)Country: USSupport: Email | Knabble, Inc. (dba Reflexivity)Country: United StatesSupport: 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 | — | Free“Basic via IBKR” |
| Entry paid plan | — | $99.99/mo“Plus via IBKR” |
| Custom / enterprise | — | Contact sales“Institutional” |
Questions we keep getting
What's the difference between FactorsToday and Reflexivity?
FactorsToday leans toward screeners, quant, and data visualizations, while Reflexivity puts more weight on screeners, quant, and performance attribution. They overlap in 8 categories, so for most people it comes down to workflow preference and price.
How much do FactorsToday and Reflexivity cost?
Good news: both FactorsToday and Reflexivity have free plans, so you can run them side by side and only pay if you hit a wall.
Do FactorsToday and Reflexivity have APIs?
Yes, both offer API access, so developers and quants can pull data programmatically or wire up their own integrations.
Should I choose FactorsToday or Reflexivity?
It depends on what you're after. Pick FactorsToday if data visualizations and stock comparison matter to you; go with Reflexivity if you'd rather have alerts and news. And if you only need the basics both share, let price decide.
What asset classes do FactorsToday and Reflexivity cover?
Both cover stocks and ETFs. FactorsToday also handles mutual funds and closed-end funds. Reflexivity adds bonds, commodities, and currencies on top.
Do FactorsToday and Reflexivity offer real-time data?
Yes, both serve real-time market data, so either works when timing matters.
Can I export data from FactorsToday and Reflexivity?
Yes, both export to spreadsheets (Excel), which is handy if you like running your own numbers.
Which has a better stock screener: FactorsToday or Reflexivity?
Both FactorsToday and Reflexivity 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 FactorsToday or Reflexivity?
Yes, both do portfolio tracking: holdings, performance, and allocation in one place.
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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.