mergermarketAbernathy MacGregor Group and Joele Frank, Wilkinson Brimmer Katcher handled PR for the largest M&A deal of the second quarter but Brunswick Group and Sard Verbinnen & Co maintained their leads among U.S. PR advisors by deal value and volume, respectively, according to mergermarket.

Abernathy MacGregor counseled Thermo Fisher Scientific in its mid-April $15B acquisition of Life Technologies Group, which was advised by Joele Frank.

Brunswick Group padded its deal value total for the year ($95.5B in the U.S.; $117.B globally) in advising animal health company Zoetis in its $12.4B spinoff from Pfizer in May.

Sard Verbinnen tacked on another 22 deals in Q2 for a total of 45 this year so far, including PR counsel for NV Energy in its $10.4B acquisition by MidAmerican Energy, and advising Valeant Pharmaceuticals in its $8.7B purchase of Bausch + Lomb, both in May.

Sard and global deal count leader FTI Consulting (94 in 2013) also advised the private equity buyers of BMC Software, a $6.7B transaction in May.

View the full tables at mergermarket.com (PDF).