Shell's "AA" Credit Rating Cut to "AA-" by Fitch due to Takeover of BG Group

Moody's has also said it is reviewing credit ratings of oil, gas and mining stocks. These companies are selling assets and slashing headcount due to the rout in commodity prices. On the flip side, the deal makes Shell the UK's largest publically owned company, with HSBC in second place. Shell rival BP is around number 6 in market cap.