If recent numbers are any indication, Marathon may have missed targeted expectations on Steam insofar as peak players, however the game remains #2 on the store's best-sellers list.

Marathon has been out for a day, and we have some indication on how well the game has done. SteamDB's metrics estimate that the shooter peaked at around 88,337 players in its first 24-hour period. These numbers could improve over the weekend as more gamers jump in--Marathon did launch on a Thursday, after all, but that didn't stop the game's biggest rival.
Interestingly enough, the game's biggest contender at launch was Slay the Spire 2, which released on the same day and vastly eclipsed Marathon's reach--Slay the Spire 2 attracted over 430K peak players on day one, as per SteamDB.

As for Marathon's overall performance, we can get a bigger picture on how well the game has at least performed on its home turf--the PlayStation 5. Bungie's latest extraction shooter currently sits at #18 out of the 20 best-selling games on the PlayStation Store.
Marathon has yet to populate or appear on Xbox's online best-sellers list.
It's unclear what Marathon's launch sales revenue would be on Steam, however the $40 price point indicates that it should have released with millions of dollars generated from game purchases.
Note that this doesn't take into account key resellers, and Marathon is currently on sale for $33.99 on Green Man Gaming, $31.02 on G2A, and $31.21 on Gameseal.



