BTC
After John bought 0.1 BTC the day before, he checked his account and was thrilled to see it had gained a little value. Maybe I really am a natural, he thought. But by lunchtime, it was down 15%. By evening, he was practically lying on the floor, watching his balance yo-yo. He panicked and checked it again at midnight, only to find… it was back up! John realized he’d joined a roller coaster with no seatbelt.