The liquidity underneath the aggregators
When a Solana router quotes you a price, a large share of the depth behind that quote is Raydium's. It has run since 2021 and is where most new Solana assets trade first — which is simultaneously its usefulness and its hazard, since reserves on a fresh listing are thin and price impact on them is violent.
December 2022: a key, not a contract
A trojan compromised the pool-owner authority key and $4.4m was taken from eight pools. The contracts behaved correctly; the operational security around them did not. RAY holders subsequently voted to fund compensation from the DAO treasury, and the authority was moved onto hardware. Read it as an operations failure with a remediation, and note that program upgrade authority still sits with the team.
Practical use
Standard pool fees plus negligible network costs make it cheap; pool creation is permissionless, which is why the catalogue includes both blue chips and a long tail of assets nobody should touch. For most traders the sensible route is through an aggregator that happens to fill on Raydium, rather than choosing the venue directly.
Liquidity provision
Supplying to a new pool here means taking the other side of whatever the launch does, which on Solana is frequently violent. The fee income on a successful listing can be substantial; the impermanent loss on an unsuccessful one is total in the way only a failed token can be.