ALCOA INC. $9.85 (www.alcoa.com) has suffered lately as slowing industrial activity in China continues to dampen aluminum prices. In response, Alcoa is closing unprofitable smelters. Even so, declining cash flow could hurt its ability to service its debt of $9.1 billion. That’s a high 70% of its depressed $13.0-billion market cap. As a result, we’ve cut Alcoa’s TSINetwork Rating from “Average” to “Extra Risk.” However, Alcoa’s plan to spin off its engineered aluminum products business as a separate firm called Arconic (New York symbol ARNC) should help unlock some of its value. Buy.