The deal is for stock and cash, with the cash totaling $1.75 billion. Quidel will assume Ortho’s existing net debt of $2.0 billion.

ChemoCentryx, Plug Power, Quidel, Avis Budget and Murphy Oil are five top stock gainers for Friday.

Quidel shares are higher after the diagnostic-test company estimated a rise in third-quarter revenue tied to its rapid Covid-19 tests.

Precipio continues to surge after climbing 172% on Monday, when it launched a COVID-19 rapid antibody test on Amazon's business platform.

Precipio says the test can only be purchased by qualified medical point-of-care providers.

Here's the latest stock market news including premarket movers like Tesla, buy-the-dip candidates and advice from Jim Cramer including capital gains taxes and earnings.

These stocks that fell this past week could be 'buy the dip' opportunities. Recent losers include Peloton, Shopify, Intel, Novavax, Roku and more

Quidel's stock price dropped as the producer of diagnostic tests and related products estimated first-quarter revenue below Wall Street's expectations.

Jim Cramer says investors are taking a breather on cyclicals and turning their attention back to technology and healthcare stocks.

Home Depot closed out a busy week by naming CEO Ted Decker as chairman, unveiling a new $15 billion buyback and declaring a $1.90 per share dividend.

"Although we're confident in our ability to perform well in a range of market scenarios, we're mindful of the current macroeconomic trends," said CEO Gary Dickerson.

Deere's third quarter profits "reflected higher costs and production inefficiencies driven by the difficult supply-chain situation," said CEO John May.