03:56 PM EDT, 03/25/2024 (MT Newswires) -- Health care stocks were decreasing in late Monday afternoon trading, with the NYSE Health Care Index and the Health Care Select Sector SPDR Fund (XLV) each shedding about 0.2%.

The iShares Biotechnology ETF (IBB) was down 0.3%.

In corporate news, Sintx Technologies ( SINT ) shares tumbled about 48% after the company said Monday it priced an offering of 28.4 million shares at $0.047 apiece for gross proceeds of about $1.3 million.

Masimo ( MASI ) shares rose 3% after an activist investor sought to add two candidates to the health technology company's board, while Masimo ( MASI ) is reviewing a separation of its consumer business. The Wall Street Journal reported that Masimo ( MASI ) may opt for a joint venture as it evaluates the proposed spinoff of the consumer business.

Landos Biopharma ( LABP ) soared 176% after the company and AbbVie ( ABBV ) said they signed an agreement under which AbbVie ( ABBV ) will buy the latter for $20.42 per share in cash, or about $137.5 million. AbbVie ( ABBV ) shares were fractionally higher.

Altamira Therapeutics ( CYTO ) surged 29% after the company said that it's collaborating with Univercells to assess the SemaPhore platform for mRNA vaccine delivery.