Frax Price Index Share (FPIS) serves as the governance token within the Frax Price Index (FPI) ecosystem. This token plays a vital role in facilitating decision-making processes and enhancing community engagement within the protocol. FPIS holders are entitled to seigniorage from the Frax Price Index system. This means that they benefit directly from the economic activities and profits generated by the protocol. Additionally, excess yield generated by the treasury will be allocated to FPIS holders, following a structure similar to that of Frax Finance's FXS token. This creates a rewarding environment for token holders, aligning their interests with the growth and success of the Frax Price Index system. In summary, FPIS not only empowers holders with governance rights but also provides them with financial incentives through yield distribution. This combination of utility and reward makes FPIS a significant component of the Frax Price Index ecosystem.