VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Tuesday, October 28, 2025

Tool Comparison

Portfolio123 vs Uncle Stock comparison

Compare pricing, supported platforms, categories, and standout capabilities to decide which tool fits your workflow.

Quick takeaways

Portfolio123 adds Quant, Correlation, Calendar, APIs & SDKs, Broker Connectors, and Data Visualizations coverage that Uncle Stock skips.

Uncle Stock includes Watchlist, Financials, Valuation Models, Scores, Checklist, and Education categories that Portfolio123 omits.

In depth comparison

Portfolio123

portfolio123.com

Editor’s pick Hands-on review

Quant research and live-deployment platform with point-in-time fundamentals and estimates. Users can screen, backtest, and simulate strategies, then deploy them live with broker integrations. Supports API access and a no-code desktop DataMiner. FactSet or S&P Compustat licenses are required for full historical fundamentals.

Platforms

WebDesktopAPI

Pricing

FreeSubscription

Quick highlights

Build custom multi-factor ranking systems and rank stocks by universe, sector, or industry.
Spreadsheet-style screening with formulas (including Piotroski F-Score) across current and historical data.
Backtesting with realistic assumptions for slippage, commissions, buy/sell rules, position sizing, and hedging.
‘Books’ feature to combine multiple strategies and view correlations between them.
Point-in-time fundamentals, estimates, and corporate actions with dividends handled on ex/pay dates (no survivorship bias or look-ahead).

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Uncle Stock

unclestock.com

Hands-on review

Global, fundamentals‑first stock screener with detailed metrics and built‑in backtesting. Covers 60k+ stocks across all continents with up to ~35 years of US history (20 years elsewhere). US fundamentals from Sharadar; non‑US fundamentals and price history from EOD Historical Data. Prices are delayed; Nasdaq shows prior‑day when market is open. API access (Gold) delivers CSV/JSON with explicit rate limits.

Platforms

WebAPI

Pricing

FreeSubscription

Quick highlights

Screening with ~4k searchable metrics, full‑text business/industry search, market/country/sector filters, and index‑constituent filters.
Backtesting with annual/half‑year/quarterly rebalance, look‑ahead avoidance (uses only data known at rebalance time), position sizing (equal/volatility/expectation‑weighted), early‑sell rules (profit targets, stop loss), and risk stats (Sharpe/Sortino).
Transparent composite scores (e.g., Uncle Stock score, Quality/Value/Financial‑Health) plus Piotroski, ERP5, Benish M, Montier and more—formulas publicly documented.
Benchmarking vs S&P 500/other indices; industry medians and long‑history fundamentals.
Lightweight portfolio: positions, limits & email notifications (Gold).

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Where they differ

Portfolio123

Distinct strengths include:

Quant Correlation Calendar APIs & SDKs Broker Connectors Data Visualizations

Build custom multi-factor ranking systems and rank stocks by universe, sector, or industry.
Spreadsheet-style screening with formulas (including Piotroski F-Score) across current and historical data.
Backtesting with realistic assumptions for slippage, commissions, buy/sell rules, position sizing, and hedging.
‘Books’ feature to combine multiple strategies and view correlations between them.

Uncle Stock

Distinct strengths include:

Watchlist Financials Valuation Models Scores Checklist Education

Screening with ~4k searchable metrics, full‑text business/industry search, market/country/sector filters, and index‑constituent filters.
Backtesting with annual/half‑year/quarterly rebalance, look‑ahead avoidance (uses only data known at rebalance time), position sizing (equal/volatility/expectation‑weighted), early‑sell rules (profit targets, stop loss), and risk stats (Sharpe/Sortino).
Transparent composite scores (e.g., Uncle Stock score, Quality/Value/Financial‑Health) plus Piotroski, ERP5, Benish M, Montier and more—formulas publicly documented.
Benchmarking vs S&P 500/other indices; industry medians and long‑history fundamentals.

Feature-by-feature breakdown

Attribute	Portfolio123	Uncle Stock
Categories Which research workflows each platform targets	Shared: Screeners, Backtesting, Portfolio, Data APIs Unique: Quant, Correlation, Calendar, APIs & SDKs, Broker Connectors, Data Visualizations	Shared: Screeners, Backtesting, Portfolio, Data APIs Unique: Watchlist, Financials, Valuation Models, Scores, Checklist, Education
Asset types Supported asset classes and universes	Stocks, ETFs	Stocks, Cryptos
Experience levels Who each product is built for	Beginner, Intermediate, Advanced	Intermediate, Advanced
Platforms Where you can access the product	Web, Desktop, API	Web, API
Pricing High-level pricing models	Free, Subscription	Free, Subscription
Key features Core capabilities called out by each vendor	Unique Build custom multi-factor ranking systems and rank stocks by universe, sector, or industry. Spreadsheet-style screening with formulas (including Piotroski F-Score) across current and historical data. Backtesting with realistic assumptions for slippage, commissions, buy/sell rules, position sizing, and hedging. ‘Books’ feature to combine multiple strategies and view correlations between them. Point-in-time fundamentals, estimates, and corporate actions with dividends handled on ex/pay dates (no survivorship bias or look-ahead). Coverage of 15,000+ equities in the U.S., Canada, and Europe, including delisted stocks and spinoffs.	Unique Screening with ~4k searchable metrics, full‑text business/industry search, market/country/sector filters, and index‑constituent filters. Backtesting with annual/half‑year/quarterly rebalance, look‑ahead avoidance (uses only data known at rebalance time), position sizing (equal/volatility/expectation‑weighted), early‑sell rules (profit targets, stop loss), and risk stats (Sharpe/Sortino). Transparent composite scores (e.g., Uncle Stock score, Quality/Value/Financial‑Health) plus Piotroski, ERP5, Benish M, Montier and more—formulas publicly documented. Benchmarking vs S&P 500/other indices; industry medians and long‑history fundamentals. Lightweight portfolio: positions, limits & email notifications (Gold). API (Gold): CSV/JSON endpoints for symbols, universes, indicators, saved queries, stock history; monthly cap 300 calls and 1 request/minute.
Tested Verified by hands-on testing inside Find My Moat	Yes	Yes
Editor pick Featured inside curated shortlists	Highlighted	Standard listing

Frequently Asked Questions

Which workflows do Portfolio123 and Uncle Stock both support?

Both platforms cover Screeners, Backtesting, Portfolio, and Data APIs workflows, so you can research those use cases in either tool before digging into the feature differences below.

Do Portfolio123 and Uncle Stock require subscriptions?

Both Portfolio123 and Uncle Stock keep freemium access with optional paid upgrades, so you can trial each platform before committing.

How can you access Portfolio123 and Uncle Stock?

Both Portfolio123 and Uncle Stock prioritize web or desktop access. Investors wanting a mobile-first workflow may need to rely on responsive web views.

What unique strengths set the two platforms apart?

Portfolio123 differentiates itself with Build custom multi-factor ranking systems and rank stocks by universe, sector, or industry., Spreadsheet-style screening with formulas (including Piotroski F-Score) across current and historical data., and Backtesting with realistic assumptions for slippage, commissions, buy/sell rules, position sizing, and hedging., whereas Uncle Stock stands out for Screening with ~4k searchable metrics, full‑text business/industry search, market/country/sector filters, and index‑constituent filters., Backtesting with annual/half‑year/quarterly rebalance, look‑ahead avoidance (uses only data known at rebalance time), position sizing (equal/volatility/expectation‑weighted), early‑sell rules (profit targets, stop loss), and risk stats (Sharpe/Sortino)., and Transparent composite scores (e.g., Uncle Stock score, Quality/Value/Financial‑Health) plus Piotroski, ERP5, Benish M, Montier and more—formulas publicly documented..

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