The above mentioned statement is true. There are two different ways to measure the liquidity of a firm first through current ratio of the firm and second through quick ratio of the firm. The second one is considered the more refine form of measuring the liquidity of the firm.
The current ratio explains the relationship between current assets and current liabilities. If current assets are quite capable to pay the current liability the liquidity of the concerned firm will be considered good. But here generally one question arises there are certain assets which cannot be converted into cash quickly such as stock and prepaid expenses.
As far as the matter of prepaid expenses is concerned it’s ok but what about the stock if we measure the liquidity on the basis of conversion of current assets in cash there are many firms where conversion of stock is not possible into cash frequently say e.g., heavy machinery manufacturing companies, locomotive companies, etc. This is because, the heavy stocks like machinery, heavy tools etc. cannot be easily sold off. In this case it is always advisable to follow the current ratio for measuring the liquidity of a firm.
But on the other hand, in case of those firms where the stock can be easily realised or sold off consideration of stock should be avoided and to measure the liquidity of that firm Quick ratio should be calculated. e.g., the inventories of a service sector company are very liquid as there are no stocks kept for sale, so in that case liquid ratio must be followed for measuring the liquidity of the firm.
We can understand from the above mentioned statement in the light of another example where stock contribute the major portion in current assets in that case to find out the liquidity of that firm stock cannot be avoided to measure the liquidity of the firm. On the other hand where stock contributes a reasonably less amount it can be avoided and liquidity of that firm can be measured with the help of quick ratio. On the other hand where there is a lot of fluctuation in the price of stock it is always advisable to compute quick ratio and avoid the stock figure because it will reduce the authenticity of liquidity measure.