question Why do newly registered domains retain less value?

They don't "retain" value any less than any other domains. Do you mean why is domain age valuable?

If you do, there are many threads about the value based on the age of a domain. Plenty of reading on this topic.

Best of luck!

Age itself does not help value.

But the best domains were registered first, many years ago. So older domains are usually worth more because of their quality and not the age.

New trends make newly registered domains worth a lot of money.

SEO

Why do newly registered domains retain less value?

because the assumption is:

since they were newly registered
then,
their value, can't be more than the cost of that registration fee.

now that's in general,
but there can be specific domains that are fresh regs, which can have value... depending on the times and trends, etc

for instance:

I used this example before, but years ago I registered a mobile tv phone name in .com
this was before the iPhone
the name sold for 4 figures

same with crypto and bit names
those who regged the good ones before the shiz-zit hit the fan, had some breezy sales.
now the market is flooded with cryptocrap names for sale

before that, it was ChinesePremium.com, 4,5,6 letter patterns, getting gobbled up from com to org, even biz

gotta know what's next, while knowing what stays the same.
when to get in and when to get off the train

imo....

Why do newly registered domains retain less value?

Click to expand...

I think the answer is in the question. Because they are new. They are an indication of "the good one was gone, so I settled for this". This is 2018, unless you are the Einstein of domain names, coming up a valuable hand-registered domain is the same as a scratch-and-win lotto ticket. BTW I assume you are talking about .com. The new G's have a better success rate with a name/value ratio because the TLDs themselves are new(ish), but the sell-through rate is unreliable.

As Dominic mentioned, getting ahead of a trend where keywords can be manipulated for a good fit is a time for good hand-registrations.

Age = Quality (Usually) !
If there have been many owners of the name..and the name hasnt been dropped even once..then you can be sure of its quality/value.

Value is tied to the name not age.
Reason here is simple, domaining started way back in the 90s, alot of good names were registered then but then again we have trends now, it's more like a whether trader information is key . When to get in and when to get out.