stockholding vs stockholdings

stockholding and stockholdings both are nouns.

Word	Noun	Adjective	Verb	Adverb
stockholding	Yes	No	No	No
stockholdings	Yes	No	No	No

As nouns, stockholding and stockholdings are synonyms defined as:

stockholding and stockholdings: a specific number of stocks or shares owned

stockholding (noun)	stockholdings (noun)
ownership of stocks; the state or fact of holding stock	a specific number of stocks or shares owned
a specific number of stocks or shares owned