Own AGL (ASX:AGL) shares? JP Morgan is overweight, tips 23% upside in 2022

Key points

• AGL shares surged in the first week of trading and have now shot back to 3-month highs
• JP Morgan is overweight AGL and values the company at $8.70 per share
• The broker feels there is a chance AGL can upgrade its FY22 guidance as well
• The AGL…