Bitcoin's price may be surging, but that doesn't mean everyone's convinced the rally will continue. 

Coinshares's digital asset investment products saw outflows for the sixth consecutive week that totaled $95 million. That figure reached $406 million over the past five weeks, representing 1.2% of total assets under management.

That's despite the cryptocurrency soaring to above $28,000 for the first time since June on Sunday, getting close to doubling its value from the start of the year. 

Bitcoin saw outflows in investment products totaling $113 million last week. Coinshares said the flows were, in part, due to the need for liquidity rather than negative sentiment.

(By Christiana Loureiro)