Last February Lido has purchased the Unslashed coverage for 196749.858268 ETH from 5% slashing. As there’s more than 250000 ETH pooled already and new Node Operators are joining the mainnet, it could be useful increase the insurance coverage.
Currently Unslashed can provide the coverage for 5% slashing on 385000 ETH. The insurance extension to this amount would cost the Lido about 33 ETH (the exact number varies with insurance token price fluctuations and time passing). The non-consumed ETH at the end of the cycle on June the 22th will be automatically rolled over to provide insurance over the following cycle or could be withdrawn by the Lido DAO. Thus the relatively high cover amount would save Lido from rushing to the buying more insurance in short time.