Iowa stocks are benefiting from the bull market, among other things, this spring. Of 27 stocks of companies with Iowa ties, 22 have increased in price from one year ago, according to an analysis by the Business Record.

The biggest winner is Winnebago Industries Inc. (WGO) of Forest City. The recreational vehicle manufacturer's stock is at $21.48 a share this morning, up 122 percent. In fact, some predict the company is poised for triple-digit earning growth in 2013 as Baby Boomers prepare to retire, reported earlier this week.

 Among other companies with Iowa ties:  Dubuque furniture manufacturer Flexsteel Industries Inc. (FLXS), which last month announced a partnership with a Welsh company to bring its furniture to the United Kingdom, is up 45 percent. 

The Des Moines Register's parent company, Gannett Co. Inc. (GCI), is up 44 percent. (Read about the Iowa newspaper's market challenges here.) and Bank of America Corp. (BAC) is up 33 percent. (See current stock prices in the stock table to the left).  

Only five companies show lower stock prices today than on March 21, 2012: Telecommunications company Windstream Corp. (WIN) of Little Rock, Ark., is down 28 percent; insurers Aviva PLC (AV) and ING Groep NV (ING) are down 13 percent and almost  9 percent, respectively; and North Liberty trucking company Heartland Express Inc. (HTLD) and DuPont (DD), which owns DuPont Pioneer, are down almost 5 percent. 

To view the percentage change for all 27 companies, click here.