Stock report · Delisted · Nasdaq
Alteon Websystems Inc (ATON)
6.21USD Delisted Final close · Sep 23, 2025
ATON no longer trades. Alteon Websystems was delisted from the Nasdaq in September 2025.
All prices on this page are historical. The last trade was on September 23, 2025, at $6.21.
ATON stock price history
Final trading statistics
- Final close
- $6.21
- Final trading day
- Sep 23, 2025
- Market cap at delisting
- —
- Shares outstanding
- —
- Final 52-week range
- $2.95 – $15.82
- Avg. volume (final 3 mo.)
- 124,560
- All-time high
- $14140.00 · Oct 2000
- All-time low
- $0.20 · Nov 2019
- Return since IPO
- -91.7%
- Beta
- —
- Book value / share
- —
- Price / book
- —
About Alteon Websystems Inc
Alteon Websystems Inc was a publicly traded company. Its shares were delisted from the Nasdaq in September 2025, and the final trade took place on September 23, 2025 at $6.21.
- Exchange (former)
- Nasdaq
- Sector
- Other
- Industry
- Other
- Headquarters
- —
- Employees
- —
- IPO date
- June 5, 2020
- Delisted
- September 23, 2025
- SEC CIK
- 1089925
Alteon Websystems stock FAQ
What happened to Alteon Websystems stock?
Alteon Websystems was delisted from the Nasdaq in September 2025. The final close was $6.21 on September 23, 2025.
Can I still buy ATON stock?
No. ATON is no longer listed on the Nasdaq or any other U.S. exchange; it was removed on September 23, 2025.
What was the last price of ATON?
ATON last closed at $6.21 on September 23, 2025.
When did Alteon Websystems go public?
Alteon Websystems shares started trading on June 5, 2020.
ATON no longer trades, so there is no live quote. The information on this page is for reference only and is not investment advice; see our disclaimer.