mark something ↔ up phrasal verbphr v [transitiveT]1COMMERCE to increase the price of something so that you sell it for more than it cost to produce, or for more than you paid for itResellers and distributors then marked up the price of the parts when selling them to end-users.
2FINANCE if shares are marked up, their price or value increasesThe City believes the retailer is set for strong future growth and the shares were marked up 6p to 355p.
→ see also markup —marked-up adjectiveadjmarked-up prices
→ mark