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Eric Lefkofsky

It’s not all rainbows for Chicago’s $1 billion tech ‘unicorns’

It’s not all rainbows for Chicago’s $1 billion tech ‘unicorns’

The office space in the old Montgomery Ward catalog warehouse where cancer-fighting data startup Tempus set up shop almost three years ago couldn’t contain the company’s growth.

Employees filled conference room tables and sat elbow to elbow at desks. The company, which gathers and analyzes data for doctors to use in cancer treatment, has more than 400 employees and adds dozens monthly. It moved to a larger space in the Near North Side building this week and is eyeing lofty goals.

With an $80 million round of venture capital funding in March, Tempus became the Chicago area’s newest “unicorn,” an industry term for privately held companies valued at $1 billion or more. But...

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