Building a domain portfolio with a thesis instead of a habit

Ask a domain investor why they own a particular name and you usually get a good answer. Ask why they own these names rather than some other set and the answer gets vague. That gap is the difference between a portfolio and an accumulation.

What a thesis is

A sentence describing which names you buy and which you decline, specific enough that it excludes things. “Good names at good prices” excludes nothing and is therefore not a thesis.

A real one looks like: two-syllable Vietnamese category terms in .com, in sectors where Vietnamese businesses already spend money online, unambiguous when unaccented, priced under a stated ceiling.

That sentence does work. It tells you to decline a beautiful name in a sector with no online spend, and to decline an ambiguous name however cheap.

Why concentration beats scatter

Three reasons, and they compound.

You learn faster. Buying repeatedly in one sector teaches you who the buyers are, what they pay and what they reject. Across twelve unrelated sectors you learn almost nothing about any of them.

The names sell together. A buyer who wants one term in a sector frequently wants two or three. A coherent group of related names is worth more as a group than the same names scattered across a book — and it is a conversation rather than a transaction.

You can actually market it. A themed set has an obvious audience you can identify and approach. A scattered book has no audience at all, which is why scattered books rely entirely on inbound enquiries.

Choosing sectors

Look for three things together: businesses that already spend on customer acquisition online, transaction sizes large enough that one closed deal justifies the name, and a customer who searches rather than being referred.

Sectors that look attractive and are not: those where the whole trade happens on a single dominant marketplace, where the customer arrives entirely by referral, or where regulation makes online acquisition impractical. The names read well and there is nobody to sell them to.

The ceiling rule

Set a maximum price per name and hold it. The rule exists to stop the specific failure where a good thesis is destroyed by one purchase that broke every constraint because the name was exceptional.

Exceptional names are the ones most likely to break a ceiling and most likely to be the purchase that stops you renewing everything else. If you raise the ceiling, raise it deliberately, in writing, for the whole thesis — not once, for one name.

The annual review

Once a year, for each name: does it still fit the thesis, can you still describe its buyer in two sentences, and has anything happened in a year of holding it?

Names failing all three are release candidates. Letting them go is the hardest discipline in this business and the one that determines whether the book stays affordable. A name you are renewing out of reluctance to admit a mistake is costing you the one thing that funds the whole portfolio.

What a good book looks like

Recognisably about something. A stranger reading the list can describe the strategy without being told. Every name has a written reason. Total renewal cost is comfortably affordable through a year with no income at all.

Most books fail the last test first, and by the time that becomes obvious the options are all bad.