Aside from the spark airdrop, xrp is one of the top 10 coins in the market, and based on the history in 2017, it could rise to almost $4, so people thought if bitcoin can reach the ath so does xrp. However, it's not only xrp that have such a significant increase in the last week, similarly likewise  Cardano and stellar have been increasing more than 100%, all this happen because altcoins is an alternative investment for people who miss the train to buy bitcoin at a cheaper rate.