Best Insider Trading Screeners in 2026: 7 Tools Compared
February 18, 2026 · Tom Reijnen · 15 min read
Updated: June 16, 2026
Every day, hundreds of SEC Form 4 filings land on EDGAR. A CEO buys $3 million in stock. A director exercises options as part of a pre-arranged schedule. A CFO makes her first open-market purchase in four years. These are fundamentally different events, but most insider trading screeners treat them the same way: parse the filing, drop it into a table, and leave you to sort signal from noise.
The data access problem is solved. SEC EDGAR is free, public, and updated in real time. The problem that remains is interpretation. About 85% of all insider filings are routine transactions (grants, options exercises, planned sales) with no predictive value. Only about 15% are discretionary open-market purchases, where an executive chooses to spend their own money. Within that 15%, not all trades carry the same weight. Research consistently shows that filtering for the right insider purchases produces meaningfully better outcomes than tracking all of them.
I built InsiderSignals because I wanted a tool that does this filtering and scoring automatically. This article compares seven purpose-built insider trading screeners, including my own, across five specific criteria. I have tested each one and will be upfront about where they excel and where they fall short.
How we evaluated
Filtering and noise reduction. Does the screener separate meaningful trades from routine filings automatically? A tool that shows every Form 4 without distinguishing an open-market purchase from an options exercise is adding work, not reducing it.
Alerting. Does the screener push notifications when filings hit, or do you have to check manually? Real-time email alerts configurable by signal quality or trade characteristics save time and surface trades you might otherwise miss. Tools that require you to refresh a page or check a dashboard on your own schedule are useful, but they shift the work to you.
Scoring and analysis. Does the tool help you interpret the data, or just display it? Scoring can take several forms: trade-level quality tiers, insider track record rankings, cluster detection, or AI-generated summaries. The key question is whether the analysis adds genuine information beyond what the raw filing shows.
Validation. How does the tool back up its claims? This criterion is worth understanding because there is a meaningful difference between two common approaches in this space. Some tools showcase individual winning trades: a +500% return here, a +200% return there. These examples are real, but they are selected from the positive tail of a distribution. Without aggregate context (how many trades were taken, what percentage were winners, what was the median outcome), individual examples tell you very little about what to expect going forward. Other tools publish aggregate performance data across the full dataset over multiple years: hit rates, median returns, transparent methodology. Neither approach is inherently wrong, but they provide very different levels of evidence. The comparison table shows which tools use which approach.
Price and accessibility. What does it cost a retail investor? Free tiers and trials matter, especially for tools where you need hands-on evaluation before committing.
Comparison
The 7 screeners
1. InsiderSignals
InsiderSignals evaluates every SEC Form 4 equity purchase across 3 compound factors (Insider Quality, Market Context, Transaction Strength) and assigns each trade to one of five tiers: Elite, Strong, Positive, Neutral, or Caution. The result is a ranked feed where the highest-conviction trades surface to the top, with instant email alerts for Elite and Strong signals.
What it does well. The scoring is transparent: every trade shows a breakdown across all 3 factors, so you can see exactly which characteristics drove the tier assignment. The backtest data is published and specific: Elite-tier trades show a 69% hit rate on 30%+ returns within 3 months, with a 47% median return, across 2015–2026. The highest-tier trades returned over 7× the S&P 500 over that period. Noise filtering is aggressive by default: option exercises, 10b5-1 plan sales, gifts, and non-open-market transactions are deprioritized. The scoring methodology is explained in detail on the site.
Where it falls short. InsiderSignals is a focused scoring tool, not a full platform. It does not include integrated charting or multi-market coverage (US SEC filings only). Cluster detection is available through the cluster filter on the recommendations page, though you cannot set alerts specifically for cluster activity yet. Congressional trade tracking is on the roadmap but not yet available. The product is designed to pair with your existing charting or brokerage platform rather than replace it.
Pricing. Free 30-day trial. Standard $14.99/mo. Pro $29.99/mo. Free tier continues with limited access after trial.
Best for: Investors who want scored, ranked insider trades backed by published aggregate performance data.
2. InsiderScreener
InsiderScreener covers 16 markets globally and ranks individual insiders by their historical trading performance. It is the only screener in this list with meaningful international coverage.
What it does well. The insider ranking system evaluates traders by historical returns over specific holding periods, separating open-position performance from realized results. The platform distinguishes routine traders from opportunistic traders (irregular timing that may carry more informational value), a meaningful distinction most tools ignore. Cluster detection flags companies where multiple insiders buy within the same window. Alerts are configurable.
Where it falls short. The scoring is insider-centric (how good is this person's track record?) rather than trade-centric (how strong is this specific trade on its own factors?). If an insider with a mediocre historical record makes an unusually large purchase into a deep pullback, an insider-centric system might underweight that signal. No published aggregate backtest data across the full dataset; the performance metrics are per-insider, not per-model.
Pricing. Free tier available. Premium $51.58/mo.
Best for: Investors who trade across international markets and want to evaluate insiders by their historical track record.
3. InsiderTradingAlerts.ai
InsiderTradingAlerts is a curated alert service, not a self-service screener. A team uses ML models and human oversight to select insider trades, then delivers a daily email with picks before market open.
What it does well. The curation model is simple and saves time: you receive a daily email with selected trades rather than screening data yourself. Human oversight on top of algorithmic filtering adds a qualitative layer. Customization options allow filtering by company, insider, or transaction size. A free trial lets you evaluate the service before paying.
Where it falls short. You cannot explore the underlying data yourself. No self-service screener, no dashboard, no historical database to analyze. No published performance metrics (hit rate, median return, or backtest results). At $49.95/mo, it is one of the more expensive options in this space for a service where you are trusting curation rather than seeing the scoring methodology.
Pricing. $49.95/mo after free trial.
Best for: Investors who prefer receiving curated trade ideas by email over screening data themselves.
4. InsiderSignal.ai
InsiderSignal.ai combines SEC Form 4 screening with AI plain-English analysis, STOCK Act congressional trade tracking, and a community layer (Discord, podcast, newsletter).
What it does well. The AI-generated plain-English analysis on each trade is genuinely useful, providing context that raw filing tables do not. Congressional trade tracking via STOCK Act disclosures is a real feature that most insider screeners lack. The community ecosystem (Discord, Substack newsletter, podcast, YouTube) adds an educational and discussion layer around the data. The platform reports analyzing 350,000+ insider trades.
Where it falls short. The performance presentation on the homepage showcases three individual trades with returns of +568%, +206%, and +77%. These are real trades, but they are individual examples selected from the positive tail. No aggregate hit rate, no median return, and no full-dataset backtest is published alongside them. Without that context, there is no way to assess how representative those results are of the overall signal. The Pro tier at $1,990/year (~$165.83/mo) is among the most expensive retail options in this space. No free tier to evaluate before committing.
Pricing. Plus $190/year ($15.83/mo). Pro $1,990/year ($165.83/mo). No free tier.
Best for: Investors who want AI-generated trade analysis and congressional trade tracking alongside corporate insider data, and who value an active community.
5. VerityData / InsiderScore
InsiderScore (now VerityData) is the institutional-grade option, offering 20+ years of cleaned insider trading data with behavioral analysis: cluster buying, buy/sell inflections, cessation of selling, and trading into strength or weakness.
What it does well. Data cleaning at this level goes beyond what retail tools offer. Automatic plan sales, tax-related trades, and other noise are stripped before behavioral analysis is applied. The platform also covers buybacks, equity grants, management changes, and institutional ownership trends. Analyst-written research briefs provide professional interpretation. The 20+ year dataset is the deepest historical coverage available.
Where it falls short. Enterprise pricing makes it inaccessible for retail investors. No free tier, and pricing is not publicly listed (contact sales required). The platform is built for hedge funds and institutional asset managers.
Pricing. Enterprise (not publicly listed).
Best for: Professional and institutional investors who need the deepest, cleanest insider trading data with behavioral analysis and analyst coverage.
6. SECForm4
SECForm4 is a real-time filing stream covering Form 4 insider trades, Schedule 13D/13G ownership disclosures, and 13F institutional holdings. Speed and breadth of coverage are the focus.
What it does well. Real-time updates directly from SEC EDGAR make it one of the fastest filing sources available. Coverage extends beyond Form 4 to include 13D/13G (activist and passive investor positions) and 13F (quarterly institutional holdings), providing broader context around insider activity. Additional tools include insider buy/sell ratio analysis, top gainers tracking, and quarterly reports on the most-bought and most-sold stocks. A free tier makes it accessible.
Where it falls short. No scoring, ranking, or analysis layer. The product is a filing stream with basic screening tools, not a signal tool. If you want help determining which insider trades matter most, you will need to bring your own analysis framework.
Pricing. Free basic tier. Insider Pro $49.95/mo.
Best for: Investors and developers who want a fast, broad filing stream covering Form 4, 13D/13G, and 13F data.
7. OpenInsider
OpenInsider is the longest-running free insider trading screener. It takes SEC Form 4 filings and presents them in a clean, filterable table with same-day updates.
What it does well. Fast, free, no account required. Useful preset views: latest cluster buys (grouped by date proximity), largest purchases, CEO/CFO buys, penny stock insider activity. Each row shows shares traded, price, value, and remaining ownership, which helps gauge position size relative to existing holdings. For quick lookups ("have insiders been buying this stock recently?"), OpenInsider is hard to beat.
Where it falls short. No scoring, no performance tracking, no noise filtering, no alerts. Every filing is presented equally: a $5 million CEO conviction buy gets the same visual weight as a routine $20,000 director purchase. You are doing all the interpretation yourself.
Pricing. Free.
Best for: Quick, free Form 4 lookup. The best starting point for investors new to insider trading data.
Broader platforms worth noting
Several strong platforms include insider data as one feature within a larger product. ChartingLens offers insider cluster detection inside a full charting and analysis platform ($9.99/mo); Will Kopec's comparison article covers additional tools from a developer's perspective. Quiver Quantitative combines insider filings with congressional trading and other alternative datasets (free tier available). Finviz includes an insider data tab within its popular stock screener. Fintel pairs insider data with short interest and institutional ownership analysis. These are capable platforms, but they are not insider screeners. They include insider data as one feature among many. If your primary goal is screening insider trades specifically, the seven tools above are purpose-built for that.
What's next for InsiderSignals
InsiderSignals today is a scoring engine. It evaluates every SEC Form 4 filing, assigns a tier, and delivers instant alerts when high-conviction signals appear, backed by an 11-year backtest across over 4 million filings. That is the core, and it is where the product goes deepest.
Three areas are on the roadmap. Congressional trade tracking: applying the same scoring methodology to STOCK Act disclosures (several tools in this article already cover this data; the goal is to bring signal-quality scoring to it). Additional markets: expanding beyond US SEC filings to international insider data. Watchlist monitoring: alerts when insiders trade at companies you already follow, configurable by tier threshold. No timelines on any of these, but that is the direction. If you have thoughts on what matters most, reach out at tom@insidersignals.io.
Have questions? See our frequently asked questions for answers about insider trading legality, screener update speeds, and how scoring works.
I am the founder and developer of InsiderSignals. This article reviews my product alongside competitors; I have aimed to assess each tool fairly based on its actual capabilities.
Related Reading
- Not All Insiders Are Equal: Which Roles Produce the Strongest Signals: The role-level analysis behind the insider quality factor in the scoring model.
- What a Decade of SEC Insider Trading Data Actually Reveals: How 85% of SEC filings are noise, and what the remaining 15% tells you.
- The Timing Edge: Why Speed Matters in Insider Trading Signals: What the filing-to-alert window means for acting on insider signals.
For informational purposes only. Not investment advice.