New bitcoin AfterDark ETF will be bitcoin at night, Treasuries by day
Tidal Trust II submitted form N-1A with the SEC to register a bitcoin ETF designed to systemically capture the cryptocurrency’s overnight return profile, a time window that delivered a significant portion of bitcoin’s upside last year.
The Nicholas Bitcoin and Treasuries AfterDark ETF provides long bitcoin exposure during US overnight hours, from the closing bell until the following morning’s market open when the fund intends to unwind its positions, according to a document filed with the SEC on Tuesday.
To gain that exposure, the ETF may use a number of methods, such as bitcoin futures contracts, US-listed ETFs, or exchange-traded options on such bitcoin underlying funds. When the market is open and daytime trading is active, the fund’s portfolio will consist of US Treasury securities and other cash equivalents.
In 2024, most of bitcoin’s gains occurred after hours, according to senior Bloomberg ETF analyst Eric Balchunas:
We looked at this last year and found most of the gains are in fact after hours. Doesn't mean the ETFs aren't having impact. Some of this is positioning bc of the ETFs etc or derivatives based on flows etc etc. But yeah, bitcoin After Dark ETF could put up better reutrns, we'll… pic.twitter.com/BTpV51cQfl
— Eric Balchunas (@EricBalchunas) December 9, 2025
The AfterDark ETF filing comes as bitcoin crossed $94,000 on Tuesday, rising 4.5% in the last 24 hours. Even though spot bitcoin ETFs saw nearly $60.5 million in outflows on Monday, the investment vehicles have a cumulative net inflow of $57.6 billion, per SoSoValue.
