A secretary turned $180 into $7.2 million by holding her employer's stock for 75 years

Kham/Reuters

• A secretary bought three shares of her company's stock for $60 each in 1935.
• Grace Groner reinvested her dividends for 75 years, and her stake ballooned to $7.2 million.
• Her employer, Abbott, shared Groner's story in a recent website post.

A secretary paid $180 in 1935 for three shares of her employer's stock. By the time she died in 2010, her investment had mushroomed to $7.2 million.

Abbott...