Among employees at major US companies, workers at NVIDIA are the most bullish about their firm's future.

That's according to a recent analysis conducted by SwitchOnBusiness of 198,617 Glassdoor reviews. The researchers looked at which of America’s biggest companies have the highest percentage of employees who rate their employer’s business outlook as positive.

An infographic (below) summarizes key findings from the research.

Specifically, it looks at the 10 large companies in the US where employee confidence is highest.