buy up

buy all or most of something that is available

C1

What does "buy sth up" mean?

To buy up something means to purchase all or as much of it as possible, usually in a deliberate, strategic, or aggressive way. The particle 'up' signals completeness — whoever is doing the buying is trying to exhaust a supply, corner a market, or accumulate as much of an asset as they can. This phrasal verb appears frequently in business journalism and financial commentary, often describing the behaviour of corporations, hedge funds, speculators, or governments. It frequently carries a negative or alarming tone, implying that the buyer's actions are monopolistic or destabilising — leaving others with less access to land, housing, shares, or other resources. Adverbs like 'aggressively', 'systematically', and 'rapidly' are common companions and reinforce this sense of scale and intent.

Examples

How to use it

buy up + noun (commodity/asset)

The most common structure, where the object is a type of asset, commodity, or supply being acquired at scale.

A consortium of investors has been buying up farmland across the region.

buy + object + up (short noun phrase)

With shorter, more definite noun objects, the particle naturally moves to follow the object, giving a slightly more emphatic feel.

The hedge fund bought the remaining stock up before anyone else could act.

buy + pronoun + up

When the object is a pronoun, separation is obligatory — the pronoun must come before 'up'.

The properties were going cheaply, so the firm bought them up almost immediately.

be bought up (by + agent)

The passive is very natural with 'buy up', particularly in journalism and business writing where the focus is on what happened to an asset rather than who acquired it.

Most of the affordable housing in the district has been bought up by overseas investment funds.

have been buying up + noun (ongoing trend)

The present perfect continuous is especially natural for describing a sustained or ongoing pattern of acquisition.

Technology giants have been buying up smaller AI startups at an unprecedented rate.

Common Collocations

buy up landbuy up sharesbuy up propertybuy up businessesbuy up stockbuy up farmland

Common Mistakes

Confusing 'buy up' with 'buy out'

'Buy up' means acquiring large quantities of something — often from multiple sources — to corner a market or exhaust a supply. 'Buy out' means purchasing a specific person's ownership stake in a company to gain full control. They are not interchangeable when discussing acquisitions.

✗ The corporation bought up its co-founder's shares to take sole ownership of the business.
✓ The corporation bought out its co-founder to take sole ownership of the business.
Using 'buy up' for ordinary single purchases

'Buy up' implies scale, totality, or strategic intent. Using it for a straightforward one-off purchase sounds unnatural and exaggerated.

✗ She bought up a new laptop for work.
✓ She bought a new laptop for work. / The company has been buying up computing equipment ahead of the product launch.
Pronoun placement before the particle

When the object is a pronoun, it must go between 'buy' and 'up'. Placing the pronoun after the particle is not standard.

✗ The tickets were selling fast, so we bought up them straight away.
✓ The tickets were selling fast, so we bought them up straight away.

Usage

This phrasal verb is common in business, financial, and news contexts and often implies aggressive or strategic purchasing at scale. It is equally natural in British and American English.

Frequently Asked Questions

Does 'buy up' always suggest something negative or dishonest?

Not always, but it often carries a mildly negative connotation — particularly in journalistic contexts where large-scale acquisition is portrayed as threatening or monopolistic. In neutral business reporting, it can simply describe strategic purchasing without implying wrongdoing. The tone is largely determined by context and surrounding language.

Can 'buy up' be used without an object?

No — 'buy up' always requires an object, either stated or clearly implied from context. Unlike some phrasal verbs, it has no natural intransitive use. Even in short responses, the thing being purchased needs to be understood from what was said before.

What kinds of things can you typically 'buy up'?

The most natural objects are assets or commodities that exist in a finite or limited supply — land, property, shares, stocks, farmland, businesses, and resources such as mineral rights. It also works well with consumer goods when someone is cornering a supply, such as tickets or inventory. It sounds unnatural with abstract or uncountable things that can't be exhausted or cornered.

Is 'buy up' more common in British or American English?

'Buy up' is equally natural and widely used in both British and American English. It appears across business journalism, financial commentary, and political discourse on both sides of the Atlantic without any significant regional preference.

How is 'buy up' different from 'snap up'?

'Snap up' emphasises speed and opportunism — it usually describes grabbing a good deal or a desirable item before someone else does. 'Buy up' emphasises scale and totality — the focus is on acquiring all or most of a supply, often strategically. You might snap up a bargain, but a corporation buys up an entire supply of land.

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