No. Axios reported on Oct. 22 that Visa was in late stage talks to buy Fireblocks for around $2.5B, per The Block.
Fireblocks denied it hours later, telling The Block: "This is news to us, and not true at present time," per The Block update. Visa said it does not comment on rumors or speculation.
So it remains an unconfirmed Axios report, not a confirmed deal. The $2.5B was the reported talk price, far below Fireblocks' $8B 2022 valuation cited across coverage.