Alteon Websystems Inc (ATON) Stock
6.21
Final close · Sep 23, 2025
ATON is no longer traded. Alteon Websystems was delisted from the Nasdaq in September 2025.
Prices on this page are historical; the last trade was September 23, 2025 at $6.21.
Alteon Websystems stock price history
Split-adjusted closes, 2020–2025
ATON 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 (split-adj.)
- $14140.00 · Oct 2000
- All-time low (split-adj.)
- $0.20 · Nov 2019
- Return since IPO
- -91.7%
- Beta
- —
- Book value / share
- —
- Price / book
- —
Final 52 wk
2.9515.82
Alteon Websystems annual financials
| Fiscal year | Revenue | Net income | EPS |
|---|
Last five fiscal years reported before the delisting; fiscal year ending December. EPS is adjusted (non-GAAP) EPS as reported. Source: company filings via EODHD.
About Alteon Websystems Inc
Alteon Websystems Inc was a Other company in the Other industry.
Alteon Websystems stock FAQ
What happened to Alteon Websystems stock?
Alteon Websystems stock was delisted from the Nasdaq. Its final close was $6.21 on September 23, 2025.
Is ATON stock still trading?
No. ATON was delisted from the Nasdaq in September 2025 and no longer trades on a U.S. exchange.
What was the last price of ATON stock?
ATON closed at $6.21 on its final trading day, September 23, 2025.
When did Alteon Websystems go public?
Alteon Websystems Inc stock began trading on June 5, 2020.