as explained in the chart, the price of stellar has been going up against Bitcoin while bitcoin was depreciating against dollar which might encourage people to start taking profit when bitcoin is going to rise up against $ as majority of traders look at their profits in US dollar terms.
Disclaimer It is not a financial advice, everything you see in this chart is a personal opinion, should not be used as an offer to buy, hold or sell any security. Be aware that trading cryptocurrencies can result in losses. Therefore, consult your trading idea with a financial advisor.