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Prepositions with nouns

In stock or of stock?

In stock is the standard expression for available goods. Of stock is not a normal English phrase.

Quick answer

Which form is correct?

Use in stock to mean available for sale or ready to use. English does not normally use of stock in this meaning.

The shoes are currently in stock.
We keep extra batteries in stock.
That model is no longer in stock.

Choose the pattern by meaning

These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.

1
in stock

Showing availability

Use in stock for products that are available.

Most sizes are in stock today.
2
out of stock

Showing unavailability

Use out of stock when an item is unavailable.

The blue version is out of stock.
3
stock of + noun

Referring to stored supplies

Stock of is used when stock means a supply of something.

The shop has a large stock of winter coats.

See the difference in context

The same subject can take different constructions because each sentence answers a different question.

Construction
Example
Meaning
in stock
The laptop is in stock.
Available for sale or use.
of stock
This phrase is not standard for availability.
Use in stock or stock of instead.
out of stock
The item is out of stock.
Currently unavailable.
stock of + noun
They keep a stock of spare parts.
A stored supply of items.

Common mistakes

Some combinations appear in real text but do not mean what learners often assume.

Using of stock for availability

English uses in stock, not of stock, to describe available products.

✕ The item is of stock. ✓ The item is in stock.

Confusing stock with storage

Stock refers to supplies or inventory.

✓ We have enough stock for the weekend.

Quick practice

Choose the expression that matches the intended meaning.

1. The camera is currently ___ stock.
2. Unfortunately, the item is out ___ stock.
3. They maintain a large stock ___ medical supplies.

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Frequently asked questions

What does in stock mean?

It means available for sale or ready for use.

Is of stock correct?

No. Standard English uses in stock or stock of something.

What is the opposite of in stock?

The opposite is out of stock.

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