Asia Tech Wire (Oct 24) -- Germany's Siemens AG is in talks over a potential deal to buy engineering software firm Altair Engineering, according to Bloomberg, citing people familiar with the matter.

Once a deal is struck with Altair, it would be one of Siemens' biggest acquisitions ever.

Shares of Michigan-based Altair have risen 36% so far this year, giving it a market capitalization of $9.05 billion.

Altair is considering a sale, Reuters reported, citing people familiar with the matter.

Negotiations are still ongoing, and it's uncertain whether Siemens will decide to make a deal.