★ BEST INVESTING TOOLS COMPARISON ★
VOL. XCIV, NO. 247
Friday, June 12, 2026
Tool Comparison · Friday, June 12, 2026
Portfolio123 vs Tweenvest
Trying to decide between Portfolio123 and Tweenvest? Here's how they compare on pricing, features, and platforms — and which one fits the way you invest.
Portfolio123
Best for quant and stock ideas
Rules‑based quant research and portfolio‑management platform. Free Manage module covers multi‑account tracking, watchlists, and broker connectivity, while paid Research/DataMiner/API tiers unlock multifactor ranking, screening, long history backtests, AI Factor, and programmatic access. Current homepage copy advertises 30 days of free screener and backtesting access, while public research/special-offer pages disagree on whether the 21-day Research trial is $9 or $19; API and DataMiner are excluded from the trial.
Tweenvest
Best for news and calendar
Web app for stock analysis with company dashboards (tables/charts), screeners, watchlists, portfolio tracking and transcripts. Plan gating: Basic (free) includes US+Spain stocks, 5y history, 1 favorites list (10 stocks), limited screener and latest transcript; Pro adds US/CA/Europe/UK coverage, 10y history, 5 favorites lists and 1 tracked portfolio (up to 20 positions); Pro+ adds unlimited portfolios/positions, ETF positions, dividend calendar and priority support; Unlimited adds worldwide stocks, full history, analyst estimates, unlimited screener/watchlists, all transcripts, editable projections and AI summaries.
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The verdict
The bottom line: Portfolio123 and Tweenvest cover a lot of the same ground — 8 shared categories, including screeners, data visualizations, and scores — so for the basics you won't go far wrong with either. Portfolio123 simply does more — 24 categories to Tweenvest's 14, including quant, stock ideas, and backtesting. Tweenvest counters by being completely free.
Key differences at a glance
Free plan
Both
Both have one
Broader coverage
Portfolio123
24 vs 14 categories
API access
Portfolio123
Portfolio123 only
Desktop app
Portfolio123
Portfolio123 only
Real-time data
Portfolio123
Portfolio123 only
Choose
Portfolio123 if…
- You care about quant, stock ideas, and backtesting — things Tweenvest doesn't offer
- You want more under one roof — 24 categories to Tweenvest's 14
- You want an API so you can script or automate things
- Delayed quotes won't cut it — you need real-time data
Choose
Tweenvest if…
- You care about news, calendar, and alerts — things Portfolio123 doesn't offer
- You're a long-term investor who cares more about fundamentals than headlines
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 Portfolio123 does best
- Web‑based quant research terminal for building multifactor ranking systems, stock/ETF screens, and complete rules‑based strategies with no programming, powered by point‑in‑time FactSet data and marketed as free of survivorship and look‑ahead bias.
- Supports realistic simulations and backtests over roughly 20 years of history for US, Canadian, and European equities, with custom universes, separate buy/sell rules, position sizing, hedging, and “Book of Strategies” to combine and analyze correlated systems.
- Stock & ETF coverage uses fundamentals, estimates, corporate actions, plus industry/sector classification, with “over 15,000 current US, Canadian, and European stocks” and many more historical issues.
- AI Factor lets users train machine‑learning predictors for expected returns and plug the predictions into ranking systems, strategy simulations and asset-level analysis, with no-code model evaluation, blocked K-fold cross validation, lift charts and model/portfolio statistics.
- Homepage currently advertises 30 days of free screener and backtesting access with no credit card required, in addition to the free Manage module.
What Tweenvest does best
- Company analysis pages built around tables, charts and dashboards; includes watchlists, portfolio views, estimates, filters and news.
- Global equity coverage marketed as “over 100,000 stocks from around the world”, updated daily.
- Stock scoring + valuation workflow: platform highlights “Stock Scoring” and “Valuation Templates”; company page also describes scoring plus “fair price” / “estimated valuation”.
- Portfolio tracking with performance + dividends and “notifications for upcoming events”; portfolio entitlements scale by plan (1 portfolio / 20 positions on Pro; unlimited portfolios/positions on Pro+).
- Dividend calendar is a Pro+ feature; dividends are part of the portfolio tracking pitch on the main site.
Data & access details
| Attribute | Portfolio123 | Tweenvest |
|---|---|---|
Asset types | StocksETFsClosed-End Funds | StocksETFs |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Regions | North AmericaEurope | North AmericaEuropeAPACLatAmMiddle EastAfrica |
Data freshness | Real-timeEnd of Day | End of Day |
API access | REST | Not specified |
Export formats | CSVJSON | Not specified |
Seen enough? The fastest way to decide is to open both and poke around for five minutes.
Pricing breakdown
Tool
Portfolio123
$19
Starting price
Plans & pricing
Tool
Tweenvest
€9.99/mo
Starting price
Plans & pricing
Coverage overlap
Where the two tools cover the same ground.
What you only get with Portfolio123.
What you only get with Tweenvest.
Community category leaders
Vote sentiment comparison
Loading sentiment chart...
Still deciding? Get hands-on with both — most plans offer a free tier or trial.
Frequently Asked Questions
What's the difference between Portfolio123 and Tweenvest?
Portfolio123 leans toward screeners, data visualizations, and quant, while Tweenvest puts more weight on screeners, data visualizations, and watchlist. They overlap in 8 categories, so for most people it comes down to workflow preference and price.
How much do Portfolio123 and Tweenvest cost?
Good news — both Portfolio123 and Tweenvest have free plans, so you can run them side by side and only pay if you hit a wall.
Does Portfolio123 or Tweenvest have an API?
Portfolio123 has an API for programmatic access and custom integrations. Tweenvest doesn't, so you're working through its interface.
Should I choose Portfolio123 or Tweenvest?
It depends on what you're after. Pick Portfolio123 if quant and stock ideas matter to you; go with Tweenvest if you'd rather have news and calendar. And if you only need the basics both share, let price decide.
What asset classes do Portfolio123 and Tweenvest cover?
Both cover stocks and ETFs. Portfolio123 also handles closed-end funds.
Does Portfolio123 or Tweenvest have real-time data?
Portfolio123 offers real-time data, which matters if you trade actively. Tweenvest 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 Portfolio123 and Tweenvest?
Portfolio123 exports to CSV and JSON. Tweenvest is stingier about getting data out.
Can Portfolio123 or Tweenvest connect to my broker?
Portfolio123 syncs with brokers automatically. With Tweenvest, you're entering holdings by hand or importing files.
Which has a better stock screener—Portfolio123 or Tweenvest?
Both Portfolio123 and Tweenvest 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 Portfolio123 or Tweenvest?
Yes, both do portfolio tracking — holdings, performance, and allocation in one place.
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.