The methodology uses a rolling window calculation of total stake-weighted rewards based on the time periods (e.g. 3 days, 7 days, 30 days) calculated. Stake-weighted here means the daily rewards of delegators are divided by their delegated stake for the day. These stake-weighted rewards are then annualized over the given period. Delegator rewards are auto-compounded (except for MEV rewards through Jito).
APY%=delegators rewards per stake in SOL×365d×24h×60m×60stime period in seconds\text{APY}\% = \frac{\text{delegators rewards per stake in SOL} \times 365_{\text{d}} \times 24_{\text{h}} \times 60_{\text{m}} \times 60_{\text{s}}}{\text{time period in seconds}}
In order to control for noise due to differing active delegation times, the APY% calculation ONLY takes into consideration delegators that have active delegations for the whole time window. On the 1d time period, the APY takes into account the rewards received for the last 3 days to smooth out the noise given Solana’s staking rewards schedule, which is every epoch (~2 days).