> For the complete documentation index, see [llms.txt](https://arkslabs.gitbook.io/arks/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://arkslabs.gitbook.io/arks/us-treasury-nft/utilisation-rate.md).

# Utilisation Rate

The utilisation rate of the ARKS UST NFT Asset Pool is calculated as the percentage of the UST NFT's assets that are invested in US Treasury-Bills. A higher utilisation rate indicates a greater proportion of UST NFT's assets are allocated to US Treasury-Bills, and vice versa. Although the target minimum utilisation rate is 95%, the actual utilisation rate may fluctuate as a result of new deposits, redemptions, and portfolio rebalancing activities. The actual yield of the ARKS UST NFT Asset Pool is determined by the combination of the utilisation rate and the estimated gross yield from the US Treasury-Bills portfolio.

<figure><img src="/files/Cgolj4K0C4vNcdwcLPp6" alt=""><figcaption></figcaption></figure>

***R(Yield) is the value actual yield***

***U is Utilisation Rate***

***Y(Yield) is Portfolio Estimated Gross Yield***


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