NEW YORK: Brunswick Group advised on $138 million worth of M&A deals in H1 2011, landing it the top US and global ranking in the Mergermarket League Tables of PR Advisors, released today.

According to the listing, Brunswick worked on 105 transactions worldwide in the first half of the year, including AT&T's $39 billion acquisition of T-Mobile USA — the largest deal so far this year.

On the global listing, by deal value, Brunswick was followed by Sard Verbinnen & Co. ($109.6 ...