Overview
Insider Alpha surfaces corporate insider trading activity in real time. Officers, directors, and 10%-plus shareholders are required to file insider disclosures within two business days of buying or selling their own company's stock. Insider Alpha parses every filing, enriches it with context, and scores it so you know which transactions actually matter.
Insider selling happens for all kinds of reasons - diversification, taxes, option exercises, scheduled 10b5-1 plans. Insider buying, especially open-market buying, is far rarer and carries more signal. Insider Alpha is engineered to separate the noise from the edge.
What it is
A screener, alert engine, and analytics dashboard built on every insider filing across US markets. Coverage includes:
- Every US public company (NYSE, Nasdaq, OTC)
- Every reporting insider (C-suite, directors, 10%-plus holders, affiliates)
- Open-market transactions, 10b5-1 plan trades, option grants, option exercises, gifts, and transfers
- Both buys (Code P, open-market purchases) and sells (Code S, open-market sales)
How to access
Open /insider-alpha. The default view is the last 7 days of filings, filtered to open-market buys only, sorted by transaction value descending.
Filter by BUYS vs SELLS
The top toolbar has a three-state toggle: All / Buys / Sells. Flip it to Buys only when you want to find companies where executives are putting their own money to work. Flip to Sells only when you want to track potential insider liquidation patterns.
Inside each direction you can further filter by transaction code:
- P - Open-market or private purchase (highest signal buy)
- S - Open-market or private sale
- A - Grant, award, or other acquisition from the issuer
- M - Option exercise
- F - Payment of exercise price or tax (usually routine)
- G - Gift or bona fide transfer
Most traders start by filtering to Code P buys only. That removes 10b5-1 schedules, option-exercise paperwork, and routine tax withholding - the long tail of trades that have little-to-no predictive value.
Cluster detection
A single officer buying $250K of stock is interesting. Five officers each buying $250K within 14 days is a cluster - and clusters are the single highest-conviction signal in insider analytics. Insider Alpha automatically tags cluster events on the feed with a badge that shows:
- Number of unique insiders
- Total dollar value
- Window (days between first and last trade)
- Role distribution (CEO, CFO, board, 10%-plus holder)
Clusters where the CEO, CFO, and at least one board member are all buying the same week are the rarest and most reliable setup in the dataset.
Screener
Build custom screens combining any of these filters:
- Ticker or sector
- Transaction code and direction
- Minimum dollar value
- Insider role (CEO, CFO, CTO, COO, director, 10%-plus holder)
- Market cap range
- Date range (last 24h, 7d, 30d, 90d, custom)
- Cluster size (minimum N insiders in window)
- Price versus 52-week-low (find buys near local bottoms)
- Price versus 52-week-high (find sells near local tops)
Save screens as templates from the top-right menu. Templates double as alert profiles - any filing that matches your saved screen can trigger a notification.
Alerts
- Build a screen that returns 3-10 matches per month historically (use the "Backtest last 90d" button to check frequency).
- Click "Save as alert" and choose delivery: Email, Discord, Telegram, or webhook.
- Toggle "Include cluster context" so the alert payload tells you not just the new trade, but the surrounding cluster (if any) and the insider's historical track record on this ticker.
- Manage all alert rules from /alerts.
Popular alert profiles:
- Any CEO open-market buy over $500K
- Cluster buy: 3+ insiders, $1M+ aggregate, 14-day window
- 10%-plus holder adding within 5% of the 52-week low
- Any insider selling >50% of their beneficial ownership in one filing
Insider detail pages
Click any insider's name to open their profile. Each profile shows:
- Every filing (life-of-career if the data is available)
- Cumulative ownership over time
- Historical return versus SPY and versus the insider's own company stock price after each buy or sell
- Aggregated hit rate (buys that beat SPY over 90 days and 365 days)
- Cluster participation history
Company detail pages
Click any ticker to see the full insider-activity overlay on the price chart. You can see exactly where each buy and sell printed relative to the stock's actual path, which makes it obvious whether insiders have historically been good timers on this name or not.
Tips
- Always filter to Code P (open-market purchases) when looking for bullish signal. Grants and exercises are accounting events, not conviction.
- Cluster buying at 52-week lows by multiple C-suite officers is the single highest-probability setup. It is also rare - expect 2-6 such events per month across the full US market.
- One director buying $15K is almost always noise. Ignore small trades unless the insider has a strong track record.
- Insider selling has lower signal than buying. Executives sell for many reasons - diversification, taxes, liquidity, scheduled plans. A single large sell rarely means anything. A cascade of sells across multiple officers is more informative.
- Cross-reference with Political Alpha. When corporate insiders and politicians buy the same ticker in the same month, the combined signal is significantly stronger than either alone.
- Use the "Price vs 52w low" filter to find insiders doubling down when sentiment is weakest. This is where the best historical risk/reward lives.