De or het tussenholding?

The correct Dutch article is:

de tussenholding

Rule Words ending in -ing: almost always de. See the rule

How to use tussenholding

the tussenholdingde tussenholding
this tussenholdingdeze tussenholding
that tussenholdingdie tussenholding
our tussenholdingonze tussenholding
your tussenholdingjouw tussenholding
every tussenholdingelke tussenholding
which tussenholding?welke tussenholding?
a big tussenholding / the big tussenholdingeen grote tussenholding, de grote tussenholding