How to measure IPO performance
Learn how starting prices, measurement windows, benchmarks, corporate actions, and missing data shape IPO performance calculations.
Put every number in context
IPO analytics. Show your working.
Useful analysis starts with consistent definitions. Compare historical base offering sizes, separate issuer proceeds, and explore how the starting price changes a return.
Historical transaction data
Compare the deal.
Not the headline.
This chart uses one definition across seven offerings: the announced offer price multiplied by the base number of securities offered.
It includes sales by the issuer and by existing holders. Additional-share options and fees are excluded. The ranking is by transaction size, not by return, quality, valuation, or attractiveness.
Base gross offering = offer price × base securities
Historical offering terms
USDBase offering size
Offer price × base securities offered. Includes primary and secondary sales; excludes options and fees. Not market capitalization or investment performance.
Check the calculationExplore the math
The baseline matters.
A first-day gain measured from an IPO offer price may be very different from the return after buying at the opening trade.
Use this fictional example to compare offer-to-close and open-to-close price returns. The same closing price can produce a positive result for one starting point and a negative result for another.
Price return = (end price ÷ start price − 1) × 100
Fictional teaching example · not a listed company
Same stock. Different starting point.
Switch the scenario and starting price. The arithmetic changes because the entry point changes, not because the company changes.
Offer price$20.00
Opening price$28.00
Closing price$25.00
Return from the $20.00 offer price to the $25.00 close+25.00%
(25.00 ÷ 20.00 − 1) × 100 = +25.00%. Price return only; no fees or distributions.
Four labels worth getting right.
01
Offering size
Gross value of the base transaction. It may include both new shares and existing-holder sales.
02
Issuer proceeds
Money attributable to company-issued securities. Gross and net proceeds are different figures.
03
Market cap
Share price multiplied by a defined outstanding share count. Not the same as offering size.
04
Price return
A percentage change between two defined prices. It does not automatically include distributions or costs.
Go deeper into IPO analytics.
IPO valuation: price, value, and dilution
Separate offering size from company value with clear examples of market capitalization, enterprise value, share counts, and dilution.
Top performing IPOs: fair comparisons
Evaluate top-performing IPO comparisons by checking the universe, price baseline, holding period, missing companies, and methodology.