British insurer Aviva Plc is likely to raise over 1 billion euros ($1.4 billion) in the planned flotation of its Dutch unit Delta Lloyd around October or November, people familiar with the matter said on Thursday.

The initial public offering has attracted initial interest from institutional investors in the Netherlands, with potential cornerstone investors taking a meaningful stake, one person said.

Aviva has appointed Morgan Stanley, Goldman Sachs and Bank of America Merrill Lynch to arrange the initial public offering, the people said.

Pre-marketing of the deal could come in early October, depending on market conditions.

Aviva said on Thursday it would sell 25-30 percent of Delta Lloyd and list shares on the Euronext Amsterdam.

as soon as conditions allow.

($1=.6954 Euro)

(Reporting by Daisy Ku)