VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Sunday, October 5, 2025

View Portfolio123 View Seeking Alpha Back to Home

Head-to-head

Portfolio123 vs Seeking Alpha comparison

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

Quick takeaways

Portfolio123 adds Quant, Backtesting, Correlation, APIs & SDKs, Data APIs, and Broker Connectors coverage that Seeking Alpha skips.

Seeking Alpha includes ETF Screeners, Stock Comparison, Watchlist, News, Alerts, Dividends, Financials, Scores, Bulls Say Bear Say, Transcripts, ETF Overview, ETF Performance, ETF Holdings, ETF Fundamentals, ETF Factors, Analyst Forecasts, Analyst Recommendations, Analyst Price Targets, Options, Which ETF includes this Stock?, AI Report, and AI Earnings Summary categories that Portfolio123 omits.

Portfolio123 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., and Backtesting with realistic assumptions for slippage, commissions, buy/sell rules, position sizing, and hedging..

Seeking Alpha is known for: Quant Ratings for stocks with five Factor Grades (Value, Growth, Profitability, Momentum, EPS Revisions), plus ETF Factor Grades (Momentum, Expenses, Dividends, Risk, Liquidity)., Stock and ETF screeners with ratings, grades, and advanced filters. Premium members can save screens for reuse., and Side-by-side comparison of up to 20 stocks, with export to Excel or PDF..

Seeking Alpha offers mobile access, which Portfolio123 skips.

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

Web

Desktop

API

Pricing

Free

Subscription

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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Seeking Alpha

seekingalpha.com

Editor’s pick Hands-on review

One of the largest investor communities online, blending crowdsourced research with data tools. Premium unlocks Quant Ratings and Factor Grades, stock and ETF screeners, advanced comparison tools with Excel/PDF export, broker syncing (via Plaid and SnapTrade), and AI-driven “Virtual Analyst” reports. PRO goes further with curated Top Ideas, Short Ideas, and the PRO Quant Portfolio. Market quotes are a mix of real-time and 15-minute delayed, depending on the exchange.

Platforms

Web

Mobile

Pricing

Free

Subscription

Quick highlights

Quant Ratings for stocks with five Factor Grades (Value, Growth, Profitability, Momentum, EPS Revisions), plus ETF Factor Grades (Momentum, Expenses, Dividends, Risk, Liquidity).
Stock and ETF screeners with ratings, grades, and advanced filters. Premium members can save screens for reuse.
Side-by-side comparison of up to 20 stocks, with export to Excel or PDF.
Portfolio tools with custom views, health scores, and Excel export. Premium users can link brokers for daily auto-sync through Plaid or SnapTrade.
Market data includes both real-time and delayed quotes, with advanced charts covering intraday to multi-year intervals.

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Overlap

Shared focus areas

4 overlaps

Mutual strengths include Screeners, Portfolio, and Calendar plus 1 more area.

Where they differ

Portfolio123

Distinct strengths include:

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.

Seeking Alpha

Distinct strengths include:

Quant Ratings for stocks with five Factor Grades (Value, Growth, Profitability, Momentum, EPS Revisions), plus ETF Factor Grades (Momentum, Expenses, Dividends, Risk, Liquidity).
Stock and ETF screeners with ratings, grades, and advanced filters. Premium members can save screens for reuse.
Side-by-side comparison of up to 20 stocks, with export to Excel or PDF.
Portfolio tools with custom views, health scores, and Excel export. Premium users can link brokers for daily auto-sync through Plaid or SnapTrade.

Feature-by-feature breakdown

Attribute	Portfolio123	Seeking Alpha
Categories Which research workflows each platform targets	Shared: Screeners, Portfolio, Calendar, Data Visualizations Unique: Quant, Backtesting, Correlation, APIs & SDKs, Data APIs, Broker Connectors	Shared: Screeners, Portfolio, Calendar, Data Visualizations Unique: ETF Screeners, Stock Comparison, Watchlist, News, Alerts, Dividends, Financials, Scores, Bulls Say Bear Say, Transcripts, ETF Overview, ETF Performance, ETF Holdings, ETF Fundamentals, ETF Factors, Analyst Forecasts, Analyst Recommendations, Analyst Price Targets, Options, Which ETF includes this Stock?, AI Report, AI Earnings Summary
Asset types Supported asset classes and universes	Stocks, ETFs	Stocks, ETFs, Mutual Funds, Closed-End Funds, Options
Experience levels Who each product is built for	Beginner, Intermediate, Advanced	Beginner, Intermediate, Advanced
Platforms Where you can access the product	Web, Desktop, API	Web, Mobile
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 Quant Ratings for stocks with five Factor Grades (Value, Growth, Profitability, Momentum, EPS Revisions), plus ETF Factor Grades (Momentum, Expenses, Dividends, Risk, Liquidity). Stock and ETF screeners with ratings, grades, and advanced filters. Premium members can save screens for reuse. Side-by-side comparison of up to 20 stocks, with export to Excel or PDF. Portfolio tools with custom views, health scores, and Excel export. Premium users can link brokers for daily auto-sync through Plaid or SnapTrade. Market data includes both real-time and delayed quotes, with advanced charts covering intraday to multi-year intervals. Full library of earnings call transcripts, with AI-generated “Earnings Call Insights” and “Virtual Analyst” summaries.
Tested Verified by hands-on testing inside Find My Moat	Yes	Yes
Editor pick Featured inside curated shortlists	Highlighted	Highlighted

Frequently Asked Questions

Which workflows do Portfolio123 and Seeking Alpha both support?

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

Do Portfolio123 and Seeking Alpha require subscriptions?

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

Which tool has mobile access?

Seeking Alpha ships a dedicated mobile experience, while Portfolio123 focuses on web or desktop access.

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 Seeking Alpha stands out for Quant Ratings for stocks with five Factor Grades (Value, Growth, Profitability, Momentum, EPS Revisions), plus ETF Factor Grades (Momentum, Expenses, Dividends, Risk, Liquidity)., Stock and ETF screeners with ratings, grades, and advanced filters. Premium members can save screens for reuse., and Side-by-side comparison of up to 20 stocks, with export to Excel or PDF..

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Stay on top of related tools

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