The Endowment Effect: Why We Overvalue What We Own
Once something is ours, we want more to give it up than we would pay to get it. That gap has real consequences.
By Iris Penhaligon | Oct 9, 2026 | 4 min
In a classic experiment, half of a group of students were given coffee mugs. Owners asked for roughly twice as much to sell their mugs as non-owners were willing to pay for them.
Nothing about the mug changed. Ownership did.
I What is going on
The endowment effect is closely linked to loss aversion. Giving up something we own feels like a loss, and losses loom larger than equivalent gains. So the price we demand to part with an item is inflated.
II Everyday examples
- — Homeowners setting asking prices above what buyers will pay
- — Holding on to clutter we would never buy again
- — Reluctance to switch providers, even to a cheaper deal
- — Overvaluing investments we already hold
III How businesses use it
Free trials, test drives, and generous return policies let you feel ownership before you pay. Once you have the product at home, giving it back feels like a loss, so more people keep it.
IV Countering it
Ask yourself: if I did not already own this, would I buy it at today’s price? For investments, possessions, and subscriptions alike, that question strips away some of the ownership premium.
This is general educational information about economics, not financial, investment, or tax advice. Consult a qualified, licensed professional before making financial decisions.
Further reading
- 1. The Framing Effect: Why “90% Survival” Beats “10% Mortality”
- 2. Present Bias: Why We Choose Now Over Later
- 3. The Anchoring Effect: Why the First Number Sticks