MASI - Latest News

Masimo Corporation (MASI), operates in Healthcare / Medical - Instruments & Supplies, trades on NASDAQ.

Market capitalization stands near $9.34B. Trailing twelve-month P/E ratio is 122.06. Beta to the broader market is 1.13.

The article list below shows the most recent MASI headlines from major financial news vendors. For options traders, the most actionable items are earnings releases, analyst rating changes, M&A activity, and regulatory filings - each can drive a meaningful repricing of implied volatility and shift dealer hedging flow. Pair the news context with the implied-volatility skew and gamma exposure views to see whether the options market has already priced in the headline.

Recent MASI Headlines

Masimo Shareholders Approve Acquisition by Danaher

businesswire.com - May 4, 2026

IRVINE, Calif. --(BUSINESS WIRE)--Masimo Corporation (Nasdaq: MASI) (“Masimo”), a leading global innovator in patient monitoring, today announced that

Masimo SET Shows Accurate Pulse Oximetry in Newborns of All Skin Tones

zacks.com - May 1, 2026

MASI's SET pulse oximetry shows accurate, consistent readings in hospitalized newborns across all skin tones in the largest real-world study.

DXCM or MASI: Which Is the Better Value Stock Right Now?

zacks.com - Apr 29, 2026

Investors looking for stocks in the Medical - Instruments sector might want to consider either DexCom (DXCM) or Masimo (MASI). But which of these two

Masimo SET® Pulse Oximetry Performed Accurately on Hospitalized Newborns of All Skin Tones in Largest-Ever Prospective Real-World Study

businesswire.com - Apr 28, 2026

IRVINE, Calif. --(BUSINESS WIRE)-- #Masimo--A NICU study evaluating Masimo SET® pulse oximetry on hospitalized newborns found no clinically significan

Masimo Corporation $MASI Shares Bought by Cwm LLC

defenseworld.net - Apr 25, 2026

Cwm LLC boosted its stake in shares of Masimo Corporation (NASDAQ: MASI) by 2,045. 3% in the fourth quarter, according to its most recent 13F filing w

How News Affects MASI Options Pricing

Headlines and scheduled events drive implied volatility in two distinct ways. Pre-event, IV typically inflates as uncertainty about the outcome rises; this is the implied-volatility expansion that creates the long-vol setup. Post-event, IV typically contracts sharply as uncertainty resolves; this is IV crush, which makes premium-selling structures profitable when they survive the underlying move. The size of the crush depends on how stretched pre-event IV is relative to the realized move. Track MASI's implied vs realized volatility over the news cycle to size pre-event vs post-event positioning. For ticker-level dealer positioning context, the gamma exposure view shows whether dealers are positioned to amplify or dampen post-news moves.

Frequently asked MASI news questions

What is the latest MASI news headline?

The most recent MASI headline (May 4, 2026) is "Masimo Shareholders Approve Acquisition by Danaher". The five most recent stories with summaries and publication times are listed above, sourced from major financial news vendors.

How fresh is the MASI news on this page?

News rows refresh roughly every 30 minutes during the trading day. The five most recent headlines are listed in publication-time order. Press releases from the company itself typically appear within minutes of the wire release; third-party reporting may lag by 30-60 minutes depending on the source.

What MASI news moves options pricing?

Three categories move single-name IV most aggressively: scheduled earnings releases (priced into pre-event IV, crushed post-event), unscheduled M&A or strategic announcements (rapid IV expansion, slower decay), and regulatory or legal events (drug-trial readouts, antitrust filings, FDA approvals). Routine news flow (analyst commentary, sector rotation) typically does not move IV meaningfully unless it triggers a cluster of rating changes.

How can I track unusual MASI options activity related to news?

Unusual options activity often precedes news by hours to days; the canonical signals are volume substantially above the trailing average concentrated in a small number of strikes, atypical put/call skew, and aggressive execution (at-the-ask sweeps or block prints). Cross-reference the per-ticker gamma-exposure and volume-history pages with the news flow above to triangulate informed vs uninformed flow.