IPO Simulation Agent · $99/mo Intelligence Stack
IPO Dilution Modeler
Enter a pre-money valuation, IPO share price, shares offered, and existing shares outstanding. The modeler returns founder, employee, and investor ownership % retained post-money — the dilution every pre-IPO holder needs to know before listing day.
The first of the IPO Simulation Agents — inside the $99/mo Intelligence Stack.
Unlock the IPO Dilution Modeler
The interactive calculator is part of the $99/mo IPO Intelligence Stack. Every Monday's pre-IPO intel brief, watchlist alerts, and the Simulation Agents — one subscription, cancel anytime.
Sample dilution output
Example: $10B pre-money · $10/share IPO price · 100M shares offered · 10M existing shares
| Cohort |
Pre-money shares |
Pre-money % |
Post-money shares |
Post-money % |
Dilution |
| Founder |
4,500,000 |
45.00% |
4,500,000 |
4.09% |
−40.91 pp |
| Employee pool |
1,000,000 |
10.00% |
1,000,000 |
0.91% |
−9.09 pp |
| Pre-IPO investor |
4,500,000 |
45.00% |
4,500,000 |
4.09% |
−40.91 pp |
| IPO public float |
— |
— |
100,000,000 |
90.91% |
+90.91 pp |
| TOTAL |
10,000,000 |
100% |
110,000,000 |
100% |
— |
Post-money valuation ≈ $11B · post-money share count = 110M · retention % = cohort pre-money shares ÷ post-money total. Run this on any pre-IPO position once the calculator above is unlocked.
How the IPO Dilution Modeler works
How is IPO dilution calculated?
Post-money valuation = pre-money valuation + (share price × shares offered). Total post-money shares = existing shares + shares offered. Each cohort's % retained post-money = cohort's pre-money share count ÷ total post-money shares.
What inputs does the modeler use?
Four inputs: (1) pre-money valuation in USD, (2) share price at IPO in USD, (3) shares offered in the IPO, and (4) existing shares outstanding before the IPO.
What does founder retention % mean?
Founder retention % is the founder's pre-money share count divided by the post-money total share count. A founder holding 4.5M shares of a 10M-share cap table has 45% pre-money; after a 100M-share IPO they hold ≈4.09% post-money. That's the dilution event the modeler surfaces.
Does the modeler use public S-1 or private cap-table data?
All math runs client-side from the four inputs you supply. We don't access private cap tables. If you have a public S-1 with the pre-IPO share count, the output is precise. Otherwise treat the result as a directional what-if.
Why is this gated to the $99/mo Intelligence Stack?
This is the first IPO Simulation Agent shipping inside the Intelligence Stack ($99/mo, cancel anytime). Everything on this page stays public — title, intro, sample output, FAQ, JSON-LD — so it can rank organically for “IPO dilution” / “pre-IPO dilution.” Only the interactive calculator is gated.