Appen rebounds, ALS acquires Investiga, Woolworths upgraded

At lunch on Monday the S&P/ASX 200 Index (ASX: XJO) is on course to start the week with a very strong gain. The benchmark index is currently up 1.6% to 6,816.4 points.

Here’s what is happening on the market today:

Tech shares climb higher

The Australian tech sector is rebounding after a strong night of trade on the Nasdaq index on Friday. The likes of Afterpay Ltd (ASX: APT) and Appen Limited (ASX: APX) are recording solid gains and are helping drive the S&P/ASX All Technology Index (ASX: XTX) higher. The technology index is up 1.6% at the time of writing.

ALS announces acquisition

The ALS Ltd (ASX: ALQ) share price is…