Between December 8 and 14, cryptocurrency investment funds attracted $3.2 billion, following a record $3.85 billion the previous week, according to CoinShares.
Year-to-date inflows have reached a record $44.5 billion.
Assets under management also hit an all-time high of $167.4 billion.
Over the past week, investors added $2 billion to instruments based on the leading cryptocurrency, down from $2.55 billion previously, and $38.59 billion since the start of the year.
Clients directed $14.6 million into structures allowing short positions on digital gold, compared to $6.2 million earlier.
Inflows into Ethereum funds slowed from a record $1.16 billion to $1.09 billion, marking the seventh consecutive week of positive momentum.
Investors also poured a record $145.8 million into XRP instruments, up from $134.3 million, in anticipation of an ETF launch.
Clients allocated $1.7 million to Solana-based products, a decrease from $14.1 million.
Inflows into Polkadot and Litecoin-based funds amounted to $3.7 million and $2.2 million, respectively.
In December, the SEC informed at least two of the five issuers of spot Solana-ETFs that it intends to reject their 19b-4 forms.
Earlier, Bloomberg analyst Eric Balchunas suggested that the Commission might receive applications for launching a Dogecoin-based exchange-traded fund.