Jan 5 (Reuters) - CME Group Inc:

* CME CUTS LEAN HOG FUTURES (LN) MARGINS BY 22.8% TO $2,200 PER CONTRACT FROM $2,850

* CME SAYS THE RATES WILL BE EFFECTIVE AFTER THE CLOSE OF BUSINESS ON WEDNESDAY, JANUARY 6 (Reporting by Brijesh Patel in Bengaluru)