Winnebago Industries Inc., six months after eliminating retiree health benefits and confirming a temporary layoff of about 25 workers at its Forest City manufacturing operation, posted a 42.86 percent increase in its stock price for June, leading the Business Record's Iowa Index, an unweighted average price of 23 Iowa-based public companies.

Winnebago saw its stock price increase $10.50 per share last month, boosting its overall performance over the last year by $12.08 per share, or 52.7 percent. That is good news for the company, which has been pestered by analysts and whose decision to allow new CEO Mike Happe to maintain his office in Minnesota, rather than at corporate headquarters in Forest City, has caused jitters among workers.

Winnebago stock closed at $36.40 per share today after starting the day $35.25.

Overall, the Iowa Index advanced 33 cents per share in June, or 0.89 percent, and was up $4.50 per share, or 13.68 percent, last month from a year ago. Fourteen Iowa companies reported increases in their stock price in June.