★ BEST INVESTING TOOLS COMPARISON ★
VOL. XCIV, NO. 247
Friday, June 12, 2026
Tool Comparison · Friday, June 12, 2026
Reflexivity vs WhaleWisdom
Trying to decide between Reflexivity and WhaleWisdom? Here's how they compare on pricing, features, and platforms — and which one fits the way you invest.
Reflexivity
Best for quant and performance attribution
Reflexivity is a sales-led enterprise platform designed for institutional investors. Current public positioning emphasizes explainable AI over trusted institutional data from S&P Global, LSEG Datastream, Cboe, Nasdaq, and other providers, with no separate data contracts required. It offers platform and API integration options; pricing remains demo/sales-led.
WhaleWisdom
Best for institutional data and 13f
Aggregates 13F filings, Schedule 13D/G data, Form 4 insider activity, and institutional ownership tools so investors can follow fund positioning, build watchlists/filer groups, export data, and backtest crowding strategies. Free access remains available with limited tools and recent 13F history; the pricing page says there are no trial accounts, while much of the site can be explored for free. Current paid plans are Standard at $90/quarter or $300/year, Pro at $150/quarter or $500/year, and Enterprise by quote for team access, unlimited 13F API access, live data feed calls, and nightly FTP files.
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The verdict
The bottom line: Reflexivity and WhaleWisdom cover a lot of the same ground — 5 shared categories, including screeners, backtesting, and alerts — so for the basics you won't go far wrong with either. The real difference is focus: only Reflexivity gives you quant and performance attribution, and only WhaleWisdom gives you institutional data and 13f.
Key differences at a glance
Free plan
WhaleWisdom
WhaleWisdom only
Broader coverage
Reflexivity
14 vs 12 categories
Desktop app
WhaleWisdom
WhaleWisdom only
Real-time data
Reflexivity
Reflexivity only
Beginner friendly
WhaleWisdom
WhaleWisdom only
Choose
Reflexivity if…
- You care about quant, performance attribution, and scenario & stress tests — things WhaleWisdom doesn't offer
- Delayed quotes won't cut it — you need real-time data
Choose
WhaleWisdom if…
- You'd rather start free and only pay if you outgrow it
- You care about institutional data, 13f, and 13d/13g — things Reflexivity doesn't offer
- You're newer to investing and want something approachable
Consider alternatives if…
- You'd rather have one tool that does it all.
- Neither price feels right for what you'd get.
Comparison snapshot
Standout features
What Reflexivity does best
- Institutional-grade AI research environment with verified data from S&P Global, LSEG Datastream, Nasdaq, and Cboe-all included without the need for separate data contracts.
- Deep Research agent that can write and execute Python, run backtests, generate Excel models, export code and data, and produce publication-ready reports.
- Document Intelligence to search and extract from SEC filings, transcripts, presentations, and central bank documents; includes OCR for charts and tables and custom ingestion for proprietary docs.
- Portfolio Insights delivers real-time alerts, risk/exposure analytics, and performance attribution.
- Scenario Analysis allows backtesting and stress testing with 50+ years of historical market data.
What WhaleWisdom does best
- Track and analyze hedge-fund and institutional SEC filings including 13F quarterly reports, Schedule 13D/G events, Form 4 insider transactions, Form D, Form 144, N-CEN mutual-fund search, and Investment Adviser/Form ADV search tools.
- Free tier advertises past two years of 13F data, unlimited email alerts, filer groups up to 5 members, stock watchlists up to 5 stocks, backtesting over recent 13F history, and limited access to most site tools.
- 13F database history goes back to the March 31, 2001 quarter / Q1 2001; Standard and Pro unlock earlier historical 13F data, while Standard also lists historical 13D/G data back to 2006.
- Developer API uses the endpoint https://whalewisdom.com/shell/command, requires a registered account and API access keys/signatures or an authenticated browser session, and is limited to 20 requests per minute.
- API commands include quarters, stock_lookup, filer_lookup, stock_comparison, holdings_comparison, export, holdings, holders, and filer_metadata; outputs include HTML, JSON, and CSV depending on command.
Data & access details
| Attribute | Reflexivity | WhaleWisdom |
|---|---|---|
Asset types | StocksETFsBondsCommoditiesCurrencies | StocksETFsClosed-End FundsBondsOptions |
Experience | IntermediateAdvanced | BeginnerIntermediateAdvanced |
Regions | North AmericaEuropeAPACLatAmMiddle EastAfrica | North America |
Data freshness | Real-timeEnd of Day | Not specified |
API access | Not specified | REST |
Export formats | Excel | CSVExcelJSON |
Seen enough? The fastest way to decide is to open both and poke around for five minutes.
Pricing breakdown
Tool
Reflexivity
—
Starting price
Plans & pricing
Pricing not published
Tool
WhaleWisdom
$25/mo
Starting price
Plans & pricing
Coverage overlap
Where the two tools cover the same ground.
What you only get with Reflexivity.
What you only get with WhaleWisdom.
Community category leaders
Vote sentiment comparison
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Still deciding? Get hands-on with both — most plans offer a free tier or trial.
Frequently Asked Questions
What's the difference between Reflexivity and WhaleWisdom?
Reflexivity leans toward screeners, quant, and performance attribution, while WhaleWisdom puts more weight on institutional data, 13f, and 13d/13g. They overlap in 5 categories, so for most people it comes down to workflow preference and price.
Is Reflexivity or WhaleWisdom free to use?
WhaleWisdom has a free tier, so you can get started without paying anything. Reflexivity is paid-only. If budget matters, start with WhaleWisdom and see how far it takes you before opening your wallet.
Which is better for beginners—Reflexivity or WhaleWisdom?
WhaleWisdom is the friendlier place to start — its interface takes less getting used to. Both work fine once you're past the basics.
Do Reflexivity and WhaleWisdom have APIs?
Yes — both offer API access, so developers and quants can pull data programmatically or wire up their own integrations.
Should I choose Reflexivity or WhaleWisdom?
It depends on what you're after. Pick Reflexivity if quant and performance attribution matter to you; go with WhaleWisdom if you'd rather have institutional data and 13f. And if you only need the basics both share, let price decide.
What asset classes do Reflexivity and WhaleWisdom cover?
Both cover stocks, ETFs, and bonds. Reflexivity also handles commodities and currencies. WhaleWisdom adds closed-end funds and options on top.
Does Reflexivity or WhaleWisdom have real-time data?
Reflexivity offers real-time data, which matters if you trade actively. WhaleWisdom runs on delayed or end-of-day data — perfectly fine for longer-term investors who don't live and die by the tick.
Can I export data from Reflexivity and WhaleWisdom?
Yes, both export to spreadsheets (Excel) — handy if you like running your own numbers.
Which has a better stock screener—Reflexivity or WhaleWisdom?
Both Reflexivity and WhaleWisdom 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 Reflexivity or WhaleWisdom?
Reflexivity handles portfolio tracking. WhaleWisdom is really a research tool — you'd track your portfolio elsewhere.
Other tools you might like
These profiles share overlapping coverage with both sides of this matchup.
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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.