This description.. "It also operates as an investment holding company" is listed a lot in various Malaysian companies in addition to their principal activity, what does it mean when it comes to the stock filtering process?

It just means the company got use some fund/money to invest in others company which they act as a holding company.

Holding company doesn't operate direct others company business operation, they are merely a company hold other company shares.

Any way can ask in the pinned section of stock market.

Don't need to open a specific topic, as it is more a general question.