Jos. A. Bank, the century-old retailer of men’s apparel, rose the most in more than 11 months after shareholder BeaconLight Capital called the company undervalued and urged share repurchases.

The stock climbed 12 percent to close at $45.33, for the biggest one-day gain since Aug. 29, 2012.

BeaconLight, which owns about 300,000 shares or or 1.1 percent of the company’s stock and options outstanding, urged the retailer to end the “hoarding” of cash by repurchasing shares.