select
symbol,
sum(amount_usd)/1000000000 as volume_billion_usd
from base.core.ez_token_transfers
where amount_usd is not null
and symbol <> 'USDC'
and symbol <> 'USDT'
and symbol <> 'DAI'
and symbol <> 'USD+'
and block_timestamp >= current_date() - 7
group by symbol
order by volume_billion_usd desc
limit 5