liquidity ordering
If you had to list your assets from 'easiest to spend' to 'hardest to spend', you would naturally start with the cash in your pocket, then money in your bank account, then perhaps a savings bond, and finally your house — which would take months to sell. Putting things in that order, from most quickly turned into cash to least, is liquidity ordering, and balance sheets use it to arrange their items.
Liquidity is how quickly and cheaply an asset can be turned into cash without losing value. Under US (GAAP-style) presentation, current assets are listed in decreasing order of liquidity: cash and cash equivalents first, then short-term investments, then accounts receivable, then inventory, then prepaid expenses. Liabilities are similarly ordered by how soon they come due. So a reader scanning down the asset column moves from the most cash-like items at the top toward the slowest-to-convert at the bottom. (Many IFRS balance sheets use the reverse, least-liquid-first order, but the principle of ranking by liquidity is the same.)
Liquidity ordering matters because it lets a reader instantly judge a company's ability to pay its bills: the closer to the top an asset sits, the faster it can cover an obligation. It is a presentation convention, not a measurement rule — it changes the order of the rows, not the amounts. A common mix-up is to treat 'higher up the list' as 'more valuable'; it only means 'more quickly convertible to cash', which is a different thing entirely.
A shop's current assets appear in this order: cash 10,000, then accounts receivable 6,000, then inventory 20,000, then prepaid insurance 1,000. Cash sits at the top because it is already money; the prepaid insurance sits last because it will be used up rather than converted to cash.
Current assets ranked from most cash-like at the top to least at the bottom.
Liquidity ordering is about speed of conversion to cash, not value or importance — and US and IFRS balance sheets often run the order opposite ways, so check which convention you are reading.