OData - Generic Inquiry Parameters

I am trying to execute a query against a GI using OData. I have been struggling in the fact that I need to make multiple round trips to retrieve data.

My question is, is there a way to query a GI and pass in a list of InventoryIDs?

This is what I am using now...and pulling one at a time. For a few thousand updates a night, this takes a long time.

/IN-InventoryBalance?$filter=InventoryID eq ‘MyInventoryID’&$format=json

Is there a way to pass is a list of InventoryID’s where I can get back multiple results? I could at least do this in a batch type of format. Maybe 20 at a time?

Thanks for your help!