US President Donald Trump's media group and Tesla, the electric carmaker owned by tech billionaire Elon Musk, are among an increasing number of companies buying huge amounts of bitcoin.

The aim? To diversify reserves, counter inflation and attract investors, analysts say.

- Who also invests? -

Companies frequently own bitcoin -- the largest cryptocurrency by market capitalisation -- to take part in sector activities such as "mining", which refers to the process of validating transactions in exchange for digital tokens.

Tesla has previously accepted payments in bitcoin, while Trump Media soon plans to offer crypto investment products.

Other players who had core operations totally unrelated to cryptocurrency, such as Japanese hotel business MetaPlanet, have switched to buying bitcoin.

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