VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Sunday, October 19, 2025

View OpenInsiderView SpotGamma Home My Collections

Head-to-head

OpenInsider vs SpotGamma comparison

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

Quick takeaways

OpenInsider adds Insider Data, and Regulatory Filings Monitoring coverage that SpotGamma skips.

SpotGamma includes Options & Derivatives, Alerts, Courses & Certs, and Blogs categories that OpenInsider omits.

OpenInsider highlights: Real-time screener of SEC Form 4 insider trading disclosures for U.S. stocks., Prebuilt screeners for quick discovery: Latest Purchases/Sales, $25k+ CEO or CFO buys, Cluster Buys, and weekly/monthly Top Purchases and Sales., and Aggregate Buy–Sell charts to visualize overall insider sentiment..

SpotGamma is known for: HIRO Indicator: see options activity and estimated hedging impact in real time—down to the second., Equity Hub: proprietary key levels, buy/sell indicators, and alerts across 3,500+ stocks & indices., and Volatility Dashboard: analyze IV across strikes/expirations; identify extremes/mispricing..

OpenInsider has a free tier, while SpotGamma requires a paid plan.

OpenInsider logo

OpenInsider

openinsider.com

Editor’s pick Hands-on review

Free web-based screener for U.S. SEC Form 4 filings, tracking insider buys and sells in real time. Data is sourced directly from SEC.gov and refreshed between 6:00 and 22:00 ET on U.S. business days.

Platforms

Web

Pricing

Free

Quick highlights

  • Real-time screener of SEC Form 4 insider trading disclosures for U.S. stocks.
  • Prebuilt screeners for quick discovery: Latest Purchases/Sales, $25k+ CEO or CFO buys, Cluster Buys, and weekly/monthly Top Purchases and Sales.
  • Aggregate Buy–Sell charts to visualize overall insider sentiment.
  • Detailed filing tables with trade/filing dates, transaction codes, prices, quantities, and values, with an integrated code legend.
  • Ability to drill down by sector, industry, ticker, or individual insider profile.

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SpotGamma logo

SpotGamma

spotgamma.com

Options‑market microstructure & dealer‑positioning analytics. Core modules: Equity Hub (key levels for 3,500+ US stocks/ETFs), HIRO real‑time options‑flow indicator (down‑to‑the‑second), an S&P 500 heatmap (TRACE), a Volatility Dashboard, FlowPatrol unusual flow insights, plus Compass & Scanners for setups. Widely used by intraday/index traders; integrates with TradingView, Bookmap, NinjaTrader, Sierra Chart, Thinkorswim, and more. No public API disclosed.

Platforms

Web

Pricing

Subscription

Quick highlights

  • HIRO Indicator: see options activity and estimated hedging impact in real time—down to the second.
  • Equity Hub: proprietary key levels, buy/sell indicators, and alerts across 3,500+ stocks & indices.
  • Volatility Dashboard: analyze IV across strikes/expirations; identify extremes/mispricing.
  • TRACE Heatmap: S&P 500 real‑time support/resistance & volatility zones.
  • 0DTE volume/open‑interest indicator; delta, vanna & gamma modeling for indices.

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Overlap

Shared focus areas

2 overlaps

Mutual strengths include Screeners, and Data Visualizations.

Where they differ

OpenInsider

Distinct strengths include:

Insider Data
Regulatory Filings Monitoring
  • Real-time screener of SEC Form 4 insider trading disclosures for U.S. stocks.
  • Prebuilt screeners for quick discovery: Latest Purchases/Sales, $25k+ CEO or CFO buys, Cluster Buys, and weekly/monthly Top Purchases and Sales.
  • Aggregate Buy–Sell charts to visualize overall insider sentiment.
  • Detailed filing tables with trade/filing dates, transaction codes, prices, quantities, and values, with an integrated code legend.

SpotGamma

Distinct strengths include:

Options & Derivatives
Alerts
Courses & Certs
Blogs
  • HIRO Indicator: see options activity and estimated hedging impact in real time—down to the second.
  • Equity Hub: proprietary key levels, buy/sell indicators, and alerts across 3,500+ stocks & indices.
  • Volatility Dashboard: analyze IV across strikes/expirations; identify extremes/mispricing.
  • TRACE Heatmap: S&P 500 real‑time support/resistance & volatility zones.

Feature-by-feature breakdown

AttributeOpenInsiderSpotGamma
Categories

Which research workflows each platform targets

Shared: Screeners, Data Visualizations

Unique: Insider Data, Regulatory Filings Monitoring

Shared: Screeners, Data Visualizations

Unique: Options & Derivatives, Alerts, Courses & Certs, Blogs

Asset types

Supported asset classes and universes

Stocks

Stocks, ETFs, Options

Experience levels

Who each product is built for

Beginner, Intermediate, Advanced

Intermediate, Advanced

Platforms

Where you can access the product

Web

Web

Pricing

High-level pricing models

Free

Subscription

Key features

Core capabilities called out by each vendor

Unique

  • Real-time screener of SEC Form 4 insider trading disclosures for U.S. stocks.
  • Prebuilt screeners for quick discovery: Latest Purchases/Sales, $25k+ CEO or CFO buys, Cluster Buys, and weekly/monthly Top Purchases and Sales.
  • Aggregate Buy–Sell charts to visualize overall insider sentiment.
  • Detailed filing tables with trade/filing dates, transaction codes, prices, quantities, and values, with an integrated code legend.
  • Ability to drill down by sector, industry, ticker, or individual insider profile.
  • CSV export links on lists and insider profile pages for offline use.

Unique

  • HIRO Indicator: see options activity and estimated hedging impact in real time—down to the second.
  • Equity Hub: proprietary key levels, buy/sell indicators, and alerts across 3,500+ stocks & indices.
  • Volatility Dashboard: analyze IV across strikes/expirations; identify extremes/mispricing.
  • TRACE Heatmap: S&P 500 real‑time support/resistance & volatility zones.
  • 0DTE volume/open‑interest indicator; delta, vanna & gamma modeling for indices.
  • Compass & Scanners: directional + volatility signals; daily names‑to‑watch.
Tested

Verified by hands-on testing inside Find My Moat

Yes

Not yet

Editor pick

Featured inside curated shortlists

Highlighted

Standard listing

Frequently Asked Questions

Which workflows do OpenInsider and SpotGamma both support?

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

Which tool offers a free plan?

OpenInsider offers a free entry point, while SpotGamma requires a paid subscription. Review the pricing table to see how the paid tiers compare.

How can you access OpenInsider and SpotGamma?

Both OpenInsider and SpotGamma 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?

OpenInsider differentiates itself with Real-time screener of SEC Form 4 insider trading disclosures for U.S. stocks., Prebuilt screeners for quick discovery: Latest Purchases/Sales, $25k+ CEO or CFO buys, Cluster Buys, and weekly/monthly Top Purchases and Sales., and Aggregate Buy–Sell charts to visualize overall insider sentiment., whereas SpotGamma stands out for HIRO Indicator: see options activity and estimated hedging impact in real time—down to the second., Equity Hub: proprietary key levels, buy/sell indicators, and alerts across 3,500+ stocks & indices., and Volatility Dashboard: analyze IV across strikes/expirations; identify extremes/mispricing..

Keep exploring

Stay on top of related tools

Browse the categories and profiles that overlap most with this comparison to round out your shortlist.

Recommended tools

These profiles share overlapping coverage with both sides of this matchup.

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.