osuuksissa

Osuuksissa is the plural inessive form of the Finnish noun osuus, meaning "in the shares", "in the portions" or "among the quotas". It is used to indicate location or a figurative state inside multiple discrete parts or holdings. Grammatically, osuus (singular) forms osuudet in the nominative plural and osuuksissa in the inessive plural, corresponding to the case marker -ssa/-ssä for "in".

The base osuus derives from osa ("part") with the derivative suffix -uus, and is common in contexts that discuss portions, shares, contributions or stakes. Osuuksissa appears frequently in financial and organizational language when referring to matters that occur within or affect different shares or holdings, for example changes spread across multiple shareholders' stakes. It is also used more generally to describe phenomena within several parts of a whole.

Examples:

- "Muutokset näkyvät osuuksissa." (The changes are visible in the shares.)

- "Tulot jakautuvat eri osuuksissa." (The incomes are distributed among different portions.)

Usage notes: as a case form, osuuksissa is tied to syntactic roles that require the inessive (location, state, or certain adverbial expressions). It follows Finnish vowel harmony and consonant gradation patterns typical for -us nouns.