Among its more annoying aspects, performance reporting on LinkedIn lacks enough context for its data points.

For reasons unknown to this author, since it was acquired by Microsoft nearly five years ago, the platform has only provided the partial story of all the reported metrics.

For example,

LinkedIn reports "record engagement" in each and every one of its quarterly updates (which is included within Microsoft's reports), but it doesn't even bother to put that in context of what that really means.
LinkedIn notifies you of the number of views your posts got for a given period of time, but it does not reveal how that compares to other people.
LinkedIn reports total members, now running into a billion or more, but that is almost meaningless, as it doesn't report active users.
Perhaps the most important point, at least from a marketer's perspective, is the question of how many people are using the app. And of those, how active are they? It is not less important, in other words, but least to begin with would be if the marketers knew the numbers of how many were daily logging into and consuming content on the LinkedIn feed.

It used to report this, in the days before Microsoft bought out. Now, it's a cog in the larger MSFT machine, and as such, doesn't have to provide granular data.

So we have to refer to estimates to work this out and probably the best indicator that we have is LinkedIn's EU active user data which it has to report every six months, as a part of the Digital Services Act (DSA) it has to meet.

And it provided its latest update on this last week.
Between January and June this year, LinkedIn had an estimated average of 51.9 million logged-in EU users. That's an increase of 4 million on the logged in user numbers it reported back in April, which was a 2.7 million user increase on its previous report. So LinkedIn's steadily adding users in the region. Not a heap, but it is growing in EU.

But that also gives us some context on how many people are actually using LinkedIn, because we also have data on total member counts in each region.
Matching these numbers up, LinkedIn currently has:
184 million members in Europe
51.9 million logged in monthly users in EU
That means that around 28% of LinkedIn's members in the region are actively logging into the platform regularly.

Now, that's not the whole story because, as LinkedIn has reported in its data, it also sees a lot of logged-out user visits and that could also contribute to its user count, right? But that's not how every other app counts active users. Meta, for example, defines an active user as "a registered and logged-in user" within the measurement period. So when Meta reports 3 billion users across its family of apps, that figure does not include "logged out site visits."

So if we were using this as a comparative number, only 28% of LinkedIn's member base in Europe is active in the app.
If you assume the usage level translates across geographies, LinkedIn would be at approximately 280 million monthly active users (28% of 1 billion members). Assuming that the EU usage is maybe a little down on other parts of the world, you could maybe bump that up to 300 million monthly actives, but I wouldn't go way higher than that, as I don't see why EU usage would be significantly down on, say, the U.S. or Asia.

While LinkedIn would much rather tout the far better-sounding "one billion members," based on its transparency reports, what we do know, its number of active, logged in users is far lower.

Now that's got to affect your ad planning a little, I would think, since the fact that you probably cannot quite reach as many people, after all could, in fact, indicate to make you re-think a LinkedIn approach, however unique the audience is only found here, and I can honestly say that you won't hit much of the remainder of the audience elsewhere with your campaigns. Nevertheless, in any case, that does give some kind of comparative perspective-in the grand scheme of social media, at least-that could serve to feed into your thinking.

So maybe useful, maybe it doesn't mean a pile, but really, the only actually important data is your ad and content performance, as well as the audience reached in the app.

But should you need more context, as LinkedIn remains resistant to such, this may serve.