Hands down the best article I’ve read in the past couple of months.

Earlier this evening I was proofing a document for an attorney and stumbled across a discrepancy in the usage of the plural with a singular noun ending with the letter ‘s’.
For example, if I have a company called “Berto Holdings” and I want to show possession, then how do I show this?

...Berto Holdings’ 30-acre farm…
or
...Berto Holdings’s 30-acre farm…

I go by the former, but decided to do some homework to find a solid guide.

Long story short, much like with English grammar in general, there aren’t any solid rules. The AP Writer’s Guide uses the former, while other Style Guides use the latter. During my search I stumbled across this gem of an article.

Gimme an ‘S’: The High Court’s Grammatical Divide