Track every dilution signal across 8,000+ publicly traded stocks — shelf registrations, ATM offering programs, outstanding warrants, PIPE deals, and DilutionScore — all sourced from live SEC filings.
Six independent signals, updated from SEC EDGAR in real time, combined into a single DilutionScore for every ticker.
Shelf registrations authorize companies to sell shares "off the shelf" at any time for up to 3 years. DilutionWatch monitors every new S-3 filing and tracks the remaining authorized capacity. An active shelf is the foundation for ATM programs, PIPE deals, and follow-on offerings.
View Shelf & ATM Monitor →At-the-market (ATM) programs allow companies to drip new shares into the open market daily, often without announcing individual transactions. DilutionWatch tracks active ATM programs, the agent broker, and authorized capacity — often the most underdetected form of ongoing dilution.
Track ATM Programs →Warrants give holders the right to buy new shares at a fixed strike price. DilutionWatch calculates the warrant coverage ratio (warrants as % of total shares), tracks which warrants are in the money, and flags companies where exercise would cause immediate dilution.
Open Warrant List →Private Investment in Public Equity (PIPE) deals create new shares through private placements, often at discounts to market price. DilutionWatch monitors PIPE announcements from SEC 8-K filings, tracking the deal size, discount rate, and dilution impact.
Track PIPE Deals →A 424B filing is the actual execution of a registered offering — the moment a company draws down from its shelf registration. DilutionWatch flags every 424B filing in real time, telling you when a company transitions from "authorized to dilute" to "actively diluting."
DilutionWatchReverse splits are a reliable predictor of continued dilution — companies often reverse split to regain exchange compliance, then resume dilutive offerings within months. DilutionWatch tracks the full reverse split history for every ticker alongside current dilution signals.
View Reverse Splits →The DilutionScore is DilutionWatch's proprietary 0–100 risk rating, calculated for each of the 8,000+ tickers in our database. It aggregates all active dilution signals into a single number that estimates the severity and imminence of dilution risk.
| Signal | What It Measures | Risk Contribution |
|---|---|---|
| Active Shelf | Whether an S-3 shelf registration is active, and how much capacity remains | Up to 25 pts |
| ATM Program | Whether an ATM offering is currently in effect, agent broker, and utilized capacity | Up to 20 pts |
| Warrant Overhang | Warrant coverage ratio and in-the-money status | Up to 20 pts |
| Recent PIPE / 424B | Prospectus supplements and PIPE executions in the past 90 days | Up to 20 pts |
| Institutional Ownership | Low institutional 13F coverage = less resistance to dilution | Up to 10 pts |
| Reverse Split History | Number and recency of reverse splits in the past 3 years | Up to 5 pts |
Stock dilution is one of the leading destroyers of value for small-cap and micro-cap investors. A company can file a shelf registration months before using it, run a silent ATM program that drips shares into the market every day, and hold warrants that sit dormant until the stock price rises. None of these show up in a stock chart until the damage is done.
A real-time dilution tracker catches these signals at the SEC filing level — often weeks or months before the price impact becomes visible. Investors who monitor SEC filings for dilution events know about supply increases before the broader market does.
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