15 Most Successful Penny Stocks in History

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8. Sirona Dental Systems, Inc. (NASDAQ:SIRO)

Market Cap: $6.15 Billion

Back in 2000, Sirona Dental Systems, Inc. (NASDAQ:SIRO) was trading below $1.0 and over the next decade and a half the stock consistently appreciated. In 2015, the share price of the manufacturer of dental equipment topped $100 per share and the same year it entered into a definitive merger agreement with DENTSPLY International Inc.

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