Stock dilution is one of the most overlooked risks in retail investing, particularly for traders active in small-cap and micro-cap stocks. A company can quietly issue millions of new shares through an ATM program, a PIPE transaction, or a warrant exercise — and unless you're watching SEC filings closely, you'll find out when the price has already dropped.
This roundup covers every dedicated dilution tracking tool we're aware of in 2025 — paid platforms, free alternatives, and the "build your own" approach via EDGAR directly. We've tried to be genuinely fair to each: what they do well, where they fall short, and who each one is actually useful for.
Disclosure: This article is published by DilutionWatch. We've done our best to present the competitive landscape accurately, but you should factor that in when reading the rankings.
| Tool | Price | Tickers | Data Speed | Free Tier | API |
|---|---|---|---|---|---|
| DilutionWatch | Free / $19.95 / $49.95/mo | 10,000+ | 60-second scanning | ✅ Yes | ✅ Premium |
| DilutionTracker | $60–74/mo | ~2,300 | Delayed/EOD | ❌ No | ❌ No |
| Dilutracker | Not publicly listed | ~3,000 | 24h processing delay | ❌ No | Unknown |
| AskEdgar | Higher-priced / Pro focus | All SEC filers | Near real-time | Limited | Yes |
| KFilings | Free | All SEC filers | Near real-time | ✅ Yes | Limited |
| SEC EDGAR (direct) | Free | All SEC filers | Real-time | ✅ Yes | ✅ Yes (EDGAR API) |
DilutionWatch monitors 10,000+ US-listed tickers across 25+ SEC filing types, scanning EDGAR every 60 seconds. It generates AI-powered filing summaries, a composite DilutionScore™ for each company, and real-time alerts for dilutive events including ATM programs, shelf registrations, PIPE transactions, warrant exercises, reverse splits, and more.
DilutionWatch was built around a core insight: most retail investors find out about dilutive events after the damage is done. By the time a PIPE transaction or new ATM program shows up in a quarterly filing, the stock has already repriced. A 60-second scanning interval is an attempt to close that information gap.
The DilutionScore™ system is particularly useful for investors who don't have time to read every filing. It aggregates risk factors — active ATM programs, cash runway under 6 months, recent large share issuances, existing warrant overhang — into a single score that lets you triage quickly. For background on what drives that score, see our explainers on ATM offerings and shelf registrations.
DilutionTracker is one of the original dedicated dilution tracking platforms, with strong historical data on the small-cap and micro-cap stocks it covers. It focuses specifically on the dilution history of companies — share count changes, financing history, outstanding warrants — for approximately 2,300 stocks in its universe.
DilutionTracker has been around long enough to have earned a following in the micro-cap trading community. If your workflow involves doing deep historical analysis on a company's capital raise history before taking a position, the platform serves that purpose well. The limitation is the coverage ceiling — if a stock you're looking at isn't in their ~2,300 ticker database, you're out of luck, and at $60-74/month, that's a meaningful gap to accept.
Dilutracker positions itself as an "institutional-grade" dilution tracking platform, covering approximately 3,000 stocks. Notable limitation: a 24-hour processing delay on data. This makes it less useful for active traders who need to act on new filings quickly.
Dilutracker's 24-hour processing delay is a fundamental design trade-off — they appear to prioritize data completeness and validation over speed. For an institutional analyst building a model on a company's 5-year dilution history, that may be acceptable. For anyone trying to get ahead of a filing that dropped this morning, it's a blocker. Pricing being opaque is another friction point for individual investors evaluating options.
AskEdgar is an AI-powered platform for analyzing SEC filings broadly — not just dilution-specific events, but the full range of SEC documents. It uses large language models to let you query filings in natural language, making it useful for legal, compliance, and professional investment research contexts.
AskEdgar occupies a different category from the other tools on this list — it's an AI research assistant that happens to cover SEC filings, rather than a purpose-built dilution tracker. If you're a portfolio manager, compliance officer, or analyst who needs to research across all types of filings (not just dilutive events), it's worth evaluating. If you specifically need to know when a micro-cap company just filed a new ATM program, you want a dedicated dilution tracker.
For investors who want to track SEC filings without paying for a dedicated tool, there are two primary options: KFilings (a free filing alert service) and SEC EDGAR directly. Both provide access to the same underlying filing data — what they lack is the interpretation layer.
KFilings provides free email alerts when companies file specific form types with the SEC. You can set up watchlists by ticker and receive notifications for 8-K, S-3, 424B3, and other filings. It's a genuinely useful free tool — the limitation is that it delivers raw filing notifications without any analysis. You still need to read the filing and understand what the dilution implications are.
SEC EDGAR itself is freely accessible at edgar.sec.gov and also provides a public EDGAR API for developers. If you're comfortable building your own tools or have the technical background to parse XML filing feeds, you can construct a customized dilution alert system from scratch at zero cost. Our article on ATM offerings and related explainers can help you understand what to look for when reading these filings.
Building your own EDGAR monitoring system is technically feasible but easily becomes a part-time job. Most investors find that $19.95/month for a tool that does this reliably is a better use of their time than maintaining custom software.
The right dilution tracker depends on your specific situation. Here's a quick decision framework:
What are you trying to accomplish? If the answer is "know when any stock I'm watching is about to be diluted, before it happens" — that's real-time alert coverage across a wide ticker universe. That's what DilutionWatch is optimized for.
DilutionWatch has a free tier that lets you see what real-time dilution tracking actually looks like. No credit card required.
Try DilutionWatch Free →