From the m-cap of BSE-listed companies crossing the $4 Tn mark to the most memorable quotes by Charlie Munger,  here's a rundown of 11 significant news stories to keep you in the know:

John Boumphrey, Amazon's UK Country Manager, told reporters that in the UK alone the online retail giant last year sold more than 4 million used or refurbished products at a discount.

Born in 1924, Munger would have turned 100 on New Year's day.

Shares of Aster DM Healthcare Ltd ended at ₹332.65, down by ₹4.75, or 1.41%, on the BSE. Founded in 1987 from a single clinic in Dubai, Aster DM has a strong presence across primary, secondary, tertiary, and quaternary healthcare and runs 33 hospitals, 127 clinics, 527 pharmacies, and 229 labs and patient experience centres in six Gulf countries and India.