Not Tesla, Not Apple, Not Netflix...

Via The Guardian,

Kristoffer Koch invested 150 kroner ($26.60) in 5,000 bitcoins in 2009, after discovering them during the course of writing a thesis on encryption. He promptly forgot about them until widespread media coverage of the anonymous, decentralised, peer-to-peer digital currency in April 2013 jogged his memory.

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The meteoric rise in bitcoin has meant that within the space of four years, one Norwegian man’s $27 investment turned into a forgotten $886,000 windfall.

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Bitcoins are stored in encrypted wallets secured with a private key, something Koch had forgotten. After eventually working out what the password could be, Koch got a pleasant surprise: "It said I had 5,000 bitcoins in there. Measuring that in today's rates it's about NOK5m ($886,000)," Koch told NRK.

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Koch exchanged one fifth of his 5,000 bitcoins, generating enough kroner to buy an apartment in Toyen, one of the Norwegian capital’s wealthier areas.