The Globe and Mail reports in its Friday edition that a new batch of U.S. bitcoin exchange-traded funds has attracted strong investor interest, though it is unclear how long they can keep up the pace of inflows. A Reuters dispatch to The Globe says that investors have poured $1.9-billion into nine new ETFs tracking the spot price of bitcoin in their first three days of trading, with fund giants BlackRock and Fidelity pulling in the lion's share of the flows (all figures U.S.). Collective flows to the nine funds outpaced postlaunch flows into the ProShares Bitcoin Strategy ETF, which drew a record $1.2-billion in the first three days of trading after its 2021 launch. The SPDR Gold Shares ETF attracted $1.13-billion in the first three days after its 2004 launch. Still, the investments in the long-awaited ETFs -- launched on Jan. 11, a day after receiving approval from the Securities and Exchange Commission -- fell short of the most aggressive estimates of first-day flows in the billions of dollars. Market participants said it remained to be seen to what degree funds tracking the notoriously volatile cryptocurrency continue drawing retail and institutional investors. Bitcoin is down more than 8 per cent since Jan. 11.