[Dow Jones] Investors that aren't risk averse should aggressively purchase Anadarko Petroleum Corp.'s (APC) shares as they are undervalued, say analysts at Barclays Capital in a note to clients. Anadarko's shares are currently trading lower than the worst-case scenario Barclays has for the possible direct liability the Houston-based company could face in connection with the Gulf of Mexico oil spill, due to Anadarko's 25% participation in a field where the broken well is located. The spill began after a Transocean Ltd. (RIG) rig, leased by field operator BP PLC (BP), exploded and sank in April. Anadarko's shares closed up 12.4% at $39.15. (Isabel Ordonez, 713-314-6090, [email protected]) (END) Dow Jones Newswires June 10, 2010 16:24 ET (20:24 GMT)