Forest City-based Winnebago Industries Inc. topped the Iowa Index list of 22 Iowa-based publicly traded companies after a 2017 in which its stock price increased 75.67 percent. Winnebago’s stellar 2017 comes just one year after it posted a 59.05 percent increase, good for second place in last year’s analysis.

Overall, however, the Business Record’s Iowa Index, an unweighted average of 22 Iowa-based public companies, underperformed national indexes, mostly missing out on the record-setting year in the markets.

While the Iowa Index increased 7.6 percent, 11 of the 22 companies saw declines in stock prices for the year. By comparison, the Nasdaq and Dow increased 28.24 percent and 25.08 percent respectively.

Don’t fret too much. The five-year percentage change of the Iowa Index is 86.88 percent, right in line with the Dow at 88.64 percent, but trailing the Nasdaq at 128.63 percent.

The Business Record alsos track 15 other publicly traded companies with a large presence in Iowa — seven of the 15 saw declines in stock price. Deere & Co. had the largest one-year increase — 51.89 percent — while Windstream Holdings Inc. had the largest one-year decrease — 74.76 percent.

You can read more about several of Iowa’s public companies in the Jan. 12 issue.