Thanks for the question! In such a company, securities are practically always classified as either
a) Investments in non-current assets (Pysyvien vastaavien sijoituksiin) and for tax purposes, Other assets (Muu omaisuus)
or
b) Current assets (Vaihto-omaisuus)
The distinction between these can sometimes be challenging. Day trading would clearly be current assets, whereas investments held for a few months to several fiscal years could fall into either category depending on other factors. If a company has various strategies simultaneously, the matter is assessed as a whole. It is also possible for different portfolios to be in different categories, although it would be clearer if all were in the same category.