VOL. XCIV, NO. 247
★ BEST INVESTING TOOLS COMPARISON ★
NO ADVICE
Thursday, January 22, 2026
Tool Comparison
Portfolio123 vs Prospero.ai comparison
Compare pricing, supported platforms, categories, and standout capabilities to decide which tool fits your workflow.
Portfolio123
portfolio123.com
At a glance
| Portfolio123 | Prospero.ai | |
|---|---|---|
| Free tier | ||
| Free trial | ||
| Starting price | $25/mo | — |
| Enterprise option | ||
| Available plans | Manage (Free), Retail Research Plans, Professional / API & Data Licenses, Research Trial | Free |
Vote sentiment comparison
Cumulative positive vote share. Loading fresh totals...
Platform details
| Attribute | Portfolio123 | Prospero.ai |
|---|---|---|
Asset types | StocksETFsClosed-End Funds | StocksETFs |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediate |
Regions | North AmericaEurope | North America |
Data freshness | Real-timeEnd of Day | Real-timeEnd of Day |
API access | REST | Not specified |
Export formats | JSON | Not specified |
Coverage overlap
Categories where both tools offer overlapping coverage.
Categories covered by Portfolio123 only.
Categories covered by Prospero.ai only.
Frequently Asked Questions
What's the difference between Portfolio123 and Prospero.ai?
Portfolio123 focuses on Screeners, Data Visualizations, and Quant while Prospero.ai specializes in Stock Ideas, Screeners, and ETF Screeners. They overlap in 6 categories, so choose based on your preferred workflow and pricing.
How much do Portfolio123 and Prospero.ai cost?
Good news—both Portfolio123 and Prospero.ai offer free plans. You can try each platform without commitment and only pay when you need premium features.
Which is better for beginners—Portfolio123 or Prospero.ai?
Both platforms target experienced investors. If you're just starting out, expect a learning curve with either option.
Can I use Portfolio123 or Prospero.ai on my phone?
Prospero.ai has a mobile app so you can check your research on the go. Portfolio123 is web-only, so you'll need a browser to access it from mobile devices.
Does Portfolio123 or Prospero.ai have an API?
Portfolio123 provides API access for programmatic data retrieval and custom integrations. Prospero.ai doesn't currently offer an API, so you'll need to use their web interface.
Should I choose Portfolio123 or Prospero.ai?
Choose Portfolio123 if you need 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., and 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.. Go with Prospero.ai if Ten proprietary signals: 5 short-term (Options/Social/Institutional/Dark Pool/Short Pressure) and 5 long-term (Upside/Downside Breakout, Profitability, Growth, Market Similarity)., and Short-term Net Options Sentiment updates ~every 2–5 minutes (real‑time orientation). better fits how you invest.
What asset classes do Portfolio123 and Prospero.ai cover?
Both cover Stocks, and ETFs. Portfolio123 also includes Closed-End Funds.
Do Portfolio123 and Prospero.ai offer real-time data?
Yes, both platforms provide real-time market data. This makes either suitable for active trading strategies where timing matters.
Can Portfolio123 or Prospero.ai connect to my broker?
Portfolio123 connects with brokers for portfolio syncing. Prospero.ai requires manual portfolio entry or data import.
Which has a better stock screener—Portfolio123 or Prospero.ai?
Both Portfolio123 and Prospero.ai include stock screeners. Try each to see which filtering options and interface you prefer.
Can I track my portfolio with Portfolio123 or Prospero.ai?
Portfolio123 offers portfolio tracking features. Prospero.ai is more focused on research and analysis.
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.