CREATE TABLE table_26744 ("April 2013 Cum. Rank" FLOAT, "Name" TEXT, "Rank 2012" FLOAT, "Rank 2013" FLOAT, "Base" TEXT, "2013 rev  ( bil. USD  ) " TEXT, "2013 Profit  ( mil. USD  ) " TEXT, "Assets 2013  ( bil.$ ) " TEXT, "Market cap March 15  ( mil.$ ) " FLOAT)

Name the market cap where 2013 rev is 2.8
SELECT "Market cap March 15 (mil.$)" FROM table_26744 WHERE "2013 rev (bil. USD )" = '2.8'
SELECT "Market cap March 15 (mil.$)" FROM "table_26744" WHERE "2013 rev (bil. USD )" = '2.8'