The average holding period for a stock on the world's major exchanges is now measured in months, and for some instruments in seconds. Against this backdrop, a small fraternity of investors has adopted a strategy so simple it sounds like nostalgia: buy wonderful assets and refuse, structurally, to sell them.

The numbers behind the philosophy are not nostalgic at all. Funds with hard lock-ups of a decade or more have raised record sums for three consecutive years. Sovereign wealth funds, family offices and university endowments, the canonical patient capital, are being joined by a new species: the permanent-capital vehicle, a fund with no expiry date and no obligation to return money, ever.

“In markets addicted to velocity, the scarce asset is time.”

The practitioners describe an unexpected dividend beyond returns: access. Founders and families who would never sell to a fund with a five-year fuse will open their books to capital that promises to stay for thirty. Patience, in other words, has become a form of deal flow.

There is a catch, and its name is governance. Money that cannot leave must be able to speak, and permanent vehicles are inventing new mechanisms, advisory seats, structured dissents, even formalised disagreements published to co-investors, to keep their influence honest. Time, the playbook concludes, is only an advantage if you fill it with attention. Otherwise it is just duration, and duration, as every bond trader knows, is risk.