30三鑫医疗300453
A-shares
Today2026-08-31N/A% of free float¥40.23MUnlock value
Track IPO lock-up expirations and share unlocks.Verify timing, size and source context first.
Track IPO lock-up expirations and restricted-share unlocks across U.S., Hong Kong and A-share markets. Verify dates, shares unlocked, free-float impact, trading context and public sources.
206share-unlock events in the next 30 days1IPO events in the next 30 days
Jay Ritter U.S. IPO long-run return research
Three years after listing, 60% of U.S. IPOs had negative returns
Among 9,195 U.S. operating-company IPOs, the median 3-year return from the first-day close was -25.7%. A small number of exceptional winners lifted the average, while pre-IPO profitability and revenue were associated with wide differences in long-run returns.
Typical outcome and return distribution9,195 U.S. IPOs · 1975–2021
3-year median-25.7%
Lost more than 50%
Lost 0–50%
Positive return
LTM loss
LTM profit
Profitability
Revenue < $100m
Revenue ≥ $100m
Revenue scale
Average 3-year return, full sample+19.1%Relative to the market-20.5%
Returns start at the first-day close, include dividends and capital gains, and end at the three-year anniversary or delisting; revenue is adjusted to 2025 purchasing power. Observation for 2023–2024 IPOs ends in December 2025, so some periods are shorter than three years. Historical U.S. results do not establish causation or predict future returns. Source tables: 16, 16b and 16e.
Upcoming share unlocks
Review upcoming unlock events by date. Open a security page to verify event size, free-float impact, holder type and source context.
| Share-unlock date | Company / ticker | Event | Unlock value | % of free float |
|---|---|---|---|---|
Aug 31, 2026Today | 30三鑫医疗300453 | Restricted-share unlock | ¥40.23M | N/A |
Aug 31, 2026Today | 30矩子科技300802 | Restricted-share unlock | ¥693.17M | N/A |
Aug 31, 2026Today | 30奇德新材300995 | Restricted-share unlock | ¥3.85M | N/A |
Aug 31, 2026Today | 30儒竞科技301525 | Restricted-share unlock | ¥120.2M | N/A |
Aug 31, 2026Today | 60上港集团600018 | Restricted-share unlock | ¥163.7M | N/A |
Aug 31, 2026Today | 60捷昌驱动603583 | Restricted-share unlock | ¥24.5M | N/A |
30矩子科技300802
A-shares
Today2026-08-31N/A% of free float¥693.17MUnlock value
30奇德新材300995
A-shares
Today2026-08-31N/A% of free float¥3.85MUnlock value
30儒竞科技301525
A-shares
Today2026-08-31N/A% of free float¥120.2MUnlock value
60上港集团600018
A-shares
Today2026-08-31N/A% of free float¥163.7MUnlock value
60捷昌驱动603583
A-shares
Today2026-08-31N/A% of free float¥24.5MUnlock value
Upcoming IPO milestones
From filing and pricing to listing and the first lock-up expiration. Select a row to review the event timeline and disclosures.
| Listing date | Company / ticker | Market | Exchange / board | Stage | Offer price | Funds raised | Actions |
|---|---|---|---|---|---|---|---|
Sep 08, 2026in 8 days | PTSIYATA PTTPTT | U.S. stocks | NASDAQ Capital | Listing | Price TBD | $0 |
PTSIYATA PTTPTT
U.S. stocks
2026-09-08in 8 daysListingIPO stagePrice TBDOffer price$0Funds raised
Confirmed
How to read the data
Check three facts before interpreting an unlock event
IPO Lock helps you verify event facts and disclosure context first. These indicators are informational only; they do not predict price, trading activity or holder sales.
An unlock date is an eligibility window, not a sale
An unlock date marks when shares become eligible for sale. It does not mean holders have sold or will sell.
Read size with free float and trading context
Shares unlocked, free-float impact and average-daily-volume multiples help compare event size with liquidity context. They cannot determine price direction on their own.
Sources and status show what can be verified
Check company filings, offering documents or exchange disclosures first. Confirmed, estimated and pending-verification labels explain the current data status.