VOL. XCIV, NO. 247

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Friday, December 26, 2025

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Tool Comparison

GammaWins Calculator vs Valuesider comparison

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

Quick takeaways

GammaWins Calculator adds Options P&L, and Options & Derivatives coverage that Valuesider skips.

Valuesider includes Screeners, Investor Holdings, and 13F categories that GammaWins Calculator omits.

In depth comparison

GammaWins Calculator logo

GammaWins Calculator

gammawins.com

Web-based options profit calculator focused on payoff + Greeks visualization. Core tools are usable without an account; some account-only features will prompt sign-in. Market data shown in the calculator is currently 15-minute delayed; GammaWins states paid tiers are planned for live data + direct index feeds.

Platforms

Web

Pricing

Free

Quick highlights

  • Payoff/strategy value visualization over time and underlying price, with optional Greeks overlays.
  • Built-in templates for common options strategies (single-leg, spreads, volatility, and complex multi-leg strategies) and supports building custom multi-leg strategies.
  • Supports US equity and equity-index options plus Danish/Swedish/Norwegian equity and index options listed on Nasdaq Nordic.
  • Options quotes are sourced via OPRA (calculator currently displays 15-minute delayed data for options and stock prices).
  • Modeling: uses Black-Scholes for European options (mainly index options) and stock calls, and Bjerksund-Stensland for American puts.

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Valuesider logo

Valuesider

valuesider.com

Free web tool for tracking “superinvestor” portfolios and stock ownership changes based on SEC 13F filings. Valuesider notes 13F data is delayed (filed up to 45 days after quarter-end) and incomplete (e.g., shorts not included), and states it only shows data from 2013 Q2 onward due to filing format limitations; shares/prices are split-adjusted. Terms prohibit bots/automated scraping.

Platforms

Web

Pricing

Free

Quick highlights

  • Browse tracked value-investor (“guru”) portfolios and quarter-by-quarter activity (buys/sells) based on SEC 13F filings.
  • Free “Holdings Screener” over the aggregated (“grand”) guru portfolio, with filters (e.g., % of grand portfolio, number of gurus, security type) and export to XLSX/XLS/CSV.
  • Free “Activity Screener” for aggregated buy/sell changes across gurus, with filters (activity type/period, security type, portfolio-impact metrics) and export to XLSX/XLS/CSV.
  • Guru portfolio pages include an “Important” button linking to the original SEC reports and provide split-adjusted shares and reported prices.
  • Ticker pages show which tracked gurus hold a security and the ownership activity over time (based on gurus’ latest SEC reports).

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Where they differ

GammaWins Calculator

Distinct strengths include:

Options P&LOptions & Derivatives
  • Payoff/strategy value visualization over time and underlying price, with optional Greeks overlays.
  • Built-in templates for common options strategies (single-leg, spreads, volatility, and complex multi-leg strategies) and supports building custom multi-leg strategies.
  • Supports US equity and equity-index options plus Danish/Swedish/Norwegian equity and index options listed on Nasdaq Nordic.
  • Options quotes are sourced via OPRA (calculator currently displays 15-minute delayed data for options and stock prices).

Valuesider

Distinct strengths include:

ScreenersInvestor Holdings13F
  • Browse tracked value-investor (“guru”) portfolios and quarter-by-quarter activity (buys/sells) based on SEC 13F filings.
  • Free “Holdings Screener” over the aggregated (“grand”) guru portfolio, with filters (e.g., % of grand portfolio, number of gurus, security type) and export to XLSX/XLS/CSV.
  • Free “Activity Screener” for aggregated buy/sell changes across gurus, with filters (activity type/period, security type, portfolio-impact metrics) and export to XLSX/XLS/CSV.
  • Guru portfolio pages include an “Important” button linking to the original SEC reports and provide split-adjusted shares and reported prices.

Feature-by-feature breakdown

AttributeGammaWins CalculatorValuesider
Categories

Which research workflows each platform targets

Shared: Data Visualizations

Unique: Options P&L, Options & Derivatives

Shared: Data Visualizations

Unique: Screeners, Investor Holdings, 13F

Asset types

Supported asset classes and universes

Options, Stocks

Stocks, ETFs, Mutual Funds, Closed-End Funds, Funds, Other

Experience levels

Who each product is built for

Intermediate, Advanced

Beginner, Intermediate

Platforms

Where you can access the product

Web

Web

Pricing

High-level pricing models

Free

Free

Key features

Core capabilities called out by each vendor

Unique

  • Payoff/strategy value visualization over time and underlying price, with optional Greeks overlays.
  • Built-in templates for common options strategies (single-leg, spreads, volatility, and complex multi-leg strategies) and supports building custom multi-leg strategies.
  • Supports US equity and equity-index options plus Danish/Swedish/Norwegian equity and index options listed on Nasdaq Nordic.
  • Options quotes are sourced via OPRA (calculator currently displays 15-minute delayed data for options and stock prices).
  • Modeling: uses Black-Scholes for European options (mainly index options) and stock calls, and Bjerksund-Stensland for American puts.
  • Dividend handling currently assumes a constant dividend rate based on recent payout history; a more advanced dividend model using exact ex-dividend dates / finite-difference is described as part of an upcoming paid plan.

Unique

  • Browse tracked value-investor (“guru”) portfolios and quarter-by-quarter activity (buys/sells) based on SEC 13F filings.
  • Free “Holdings Screener” over the aggregated (“grand”) guru portfolio, with filters (e.g., % of grand portfolio, number of gurus, security type) and export to XLSX/XLS/CSV.
  • Free “Activity Screener” for aggregated buy/sell changes across gurus, with filters (activity type/period, security type, portfolio-impact metrics) and export to XLSX/XLS/CSV.
  • Guru portfolio pages include an “Important” button linking to the original SEC reports and provide split-adjusted shares and reported prices.
  • Ticker pages show which tracked gurus hold a security and the ownership activity over time (based on gurus’ latest SEC reports).
  • Embeddable, automatically updated charts (copyable iframe code) for portfolios and tickers.
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Frequently Asked Questions

Which workflows do GammaWins Calculator and Valuesider both support?

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

Do GammaWins Calculator and Valuesider require subscriptions?

Both GammaWins Calculator and Valuesider keep freemium access with optional paid upgrades, so you can trial each platform before committing.

How can you access GammaWins Calculator and Valuesider?

Both GammaWins Calculator and Valuesider 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?

GammaWins Calculator differentiates itself with Payoff/strategy value visualization over time and underlying price, with optional Greeks overlays., Built-in templates for common options strategies (single-leg, spreads, volatility, and complex multi-leg strategies) and supports building custom multi-leg strategies., and Supports US equity and equity-index options plus Danish/Swedish/Norwegian equity and index options listed on Nasdaq Nordic., whereas Valuesider stands out for Browse tracked value-investor (“guru”) portfolios and quarter-by-quarter activity (buys/sells) based on SEC 13F filings., Free “Holdings Screener” over the aggregated (“grand”) guru portfolio, with filters (e.g., % of grand portfolio, number of gurus, security type) and export to XLSX/XLS/CSV., and Free “Activity Screener” for aggregated buy/sell changes across gurus, with filters (activity type/period, security type, portfolio-impact metrics) and export to XLSX/XLS/CSV..

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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.