MASI Masimo Corporation
NASDAQNo longer listedCommon stock
MASI was the NASDAQ ticker symbol of Masimo Corporation. It no longer appears in current US listing files, which usually means the security was delisted, acquired, merged, or moved to a new symbol.
MASI at a glance
- Symbol
- MASI
- Company / issuer
- Masimo Corporation
- Security type
- Common stock
- Last exchange
- NASDAQ
- Status
- No longer listed
- Seen in listing files
- Jan 2015 – Jun 2026
- Sector
- Health Care
- Industry
- Biotechnology: Electromedical & Electrotherapeutic Apparatus
- Country
- United States
- IPO year
- 2007
- Last reported market cap
- $9.3 billion (May 2026)
MASI ticker history
All listing names we have recorded under the symbol MASI, from periodic snapshots of US exchange listing files.
| Name | Security | First seen | Last seen |
|---|---|---|---|
| Masimo Corporation | Common Stock | Jan 2015 | Jun 2026 |
Snapshots have gaps (notably 2018–2021, and 2015–2021 for NYSE listings), so the actual delisting date may be later than the last-seen date.
Frequently asked questions
What company has the ticker symbol MASI?
MASI was the ticker symbol of Masimo Corporation on NASDAQ.
Is MASI still trading?
No. MASI does not appear in current US exchange listings as of Sep 2026; it was last seen in our listing snapshots in Jun 2026.
Which exchange was MASI listed on?
MASI was listed on NASDAQ.
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