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Choose a stock dilution tool around the question you need to answer: do you want structured financing research, a broader filing workspace, or the original documents? A useful result connects outstanding shares, potential financing, and cash needs to dated evidence you can inspect.
Dilutracker publishes this guide and sells one of the products compared. This unranked comparison uses public descriptions checked October 31, 2026, rather than hands-on benchmarking. Those descriptions establish advertised functionality, not measured accuracy, completeness, or speed. An omitted feature does not mean a provider lacks it.
Compare four research options
| Option | Documented research support | What to check |
|---|---|---|
| Dilutracker | Its research process describes reports covering warrants, convertibles, at-the-market programs (ATMs), equity lines, shelf capacity, float, and cash runway. | Do the relevant ticker's report dates and source filings answer your specific financing question? |
| Dilution Tracker | Its O/S-chart documentation, dated December 13, 2022, separates historical outstanding shares from potential ATM, S-1 offering, warrant, equity-line, and convertible additions. Potential sources need not be used. | Which values reflect issued shares, and which depend on assumptions? This documentation does not establish current coverage, plan entitlements, or prices. |
| AskEdgar | Its dilution page advertises offering-frequency, cash-position, and shelf-capacity assessment, warrant/convertible monitoring, and integration with filings, news catalysts, and filing alerts. | Can you trace the result to source documents, financing terms, and measurement dates? |
| SEC EDGAR | The official search tools provide free original filings, company search, full-text filters, latest filings, and public APIs. | Can you reconcile the documents yourself? Source availability does not establish a commercial vendor's extraction time. |
For a closer look at the two similarly named services, see our Dilutracker and Dilution Tracker comparison. Evaluate the same ticker and cutoff date across tools so differences in timing do not masquerade as disagreements.
Separate capacity from completed dilution
Four quantities answer different questions. Authorized-share headroom concerns shares the company is authorized to issue. Registered primary or resale amounts describe securities covered by a registration. Remaining instrument or program capacity concerns what may still be issued under particular arrangements. Completed issuance and cash proceeds describe what actually happened.
Registration alone proves neither a completed issuance nor issuer proceeds. A resale registration may cover existing shares or shares issuable later; read its terms. Shelf and ATM amounts can overlap, so adding every headline amount can overstate available financing. Applicable terms and constraints also affect what the company can actually issue.
A hypothetical ATM financing
Suppose a hypothetical company starts with 10 million shares outstanding, a $20 million shelf, and a $5 million ATM within that shelf. It sells $2 million through the ATM at an average $2 per share. Ignoring fees and assuming no other changes to outstanding shares:
- New shares issued: $2 million ÷ $2 = 1 million.
- Gross cash proceeds: $2 million; shares outstanding afterward: 11 million.
- Share-count growth: 1 million ÷ 10 million = 10%.
- A holder who buys no additional shares retains 10/11 of the prior ownership fraction, a reduction of approximately 9.09%.
In this hypothetical, the remaining $3 million ATM capacity is not already-issued stock. Converting it into a future share count requires an explicit price assumption. The original shelf and ATM are not $25 million of combined capacity because the ATM sits within the shelf. This example predicts neither financing timing nor share price.
Verify the filings and access you need
Keep a short worksheet with each financing amount, unit, effective date, and supporting filing. When two tools disagree, compare those fields first: an older share count or a different assumed conversion price can explain the difference.
- Record outstanding shares and their as-of date from a periodic filing. Check subsequent events and later filings for changes.
- Inspect registration statements, effectiveness information, prospectus supplements, financing agreements, and amendments.
- Separate primary sales, selling-holder resales, and shares from future exercises or conversions. Reconcile original and remaining capacity without double counting.
- Align share counts for stock splits and measurement dates. Before using runway estimates, confirm cash and burn dates and the assumptions behind the calculation.
Before subscribing, confirm coverage for your tickers, source links, data dates, and the plan needed for your research. Check API or export access if your workflow requires it, using each provider's current terms. Keep unresolved values visible rather than treating missing information as zero.