According to a report in the Financial Times, JPMorgan’s Digital Growth fund expects to acquire about 10% of Twitter for $450m, valuing Twitter at $4.5bn.

In a regulatory filing last week, the bank has said that it had raised $1.22bn for the Digital Growth fund. The fund aims to raise a total of $1.3bn from a maximum of 480 investors according to the report.

Besides the Twitter stake, JPMorgan is also expected to invest in another private Web company.

JPMorgan declined comment and Twitter could not be immediately reached for comment.

Recently, companies including Google and Facebook reportedly held primary level takeover talks with Twitter that shot up the micro-blogging site’s value to as high as $10bn.

In December last year, Twitter raised $200m in financing in a deal that valued it at $3.7bn.

Twitter was created in 2006, but it introduced advertising into its service only last year.