Reddit, whose message boards became the go-to destination for day traders during this year's meme stock frenzy, has said it has confidentially filed for an initial public offering with US securities regulators.

Reuters reported in September that the company was hoping to hit a valuation of more than $15 billion by the time it planned to list its shares.

Reddit's message boards, especially its WallStreetBets thread, were at the heart of a pitched battle between small-time traders and some of the big Wall Street firms, helping drive big gains in highly shorted shares of companies such as GameStop and AMC, while popularising the term meme stocks.

At the height of the trading frenzy in February, Reddit's value doubled to $6 billion from a year earlier.

The company was valued at $10 billion in a private fundraising round in August.

Although a decent valuation, it still pales in comparison to Twitter's $35 billion or Facebook owner Meta Platforms' nearly $1 trillion market capitalisations, despite all three companies being founded around the same time.

On Reddit thread WallStreetBets some users joked about potentially pumping the offering when it became available.

"I'm in. When do we start?" a Reddit user called 9axle said in a post

The San Francisco-based company, founded in 2005 by Steve Huffman and Alexis Ohanian, reported $100 million in advertising revenue in the second quarter, an almost threefold jump from the same period last year.

As of January, Reddit had more than 52 million daily active users and over a 100,000 communities.

In comparison, Facebook had nearly 2 billion daily active users in September, while Twitter had 211 million monetizable daily active users, a term for users who see the ads placed on their platforms.

Online brokerage Robinhood Markets, whose trading app was at the center of the meme stock frenzy, had its IPO in July.

Reddit's investors over the years have included venture capital firm Andreessen Horowitz, funds such as Sequoia Capital and Tencent Holdings, as well as rap star Snoop Dogg.

Reddit did not disclose the number of shares to be offered or the price range of the IPO in the draft registration statement with the US Securities and Exchange Commission.