Shares of Aflac rise before Japanese market update

Its stock gained $1.23, or 2.2 percent, to $57.68. Its shares have traded between $52.46 and $68.81 over the past 12 months.

The Columbus, Ga.-based insurer, whose quacking duck television commercials are making it a household name, is hosting an investor day in Tokyo on Monday. The Japanese market accounts for 72 percent of the company's total revenue.

"The broader economic environment in Japan appears to represent something of a headwind for Aflac," wrote SunTrust Robinson Humphrey analyst Mark Hughes in a note to clients Friday.

Japanese consumers are also dealing with rising inflation, he said.

Both of these factors, Hughes added, reduce available cash for workers and "may limit their purchase of supplemental insurance products in the near term," Hughes wrote.

He maintains a "Buy" rating on the stock.