Revenue at Omnicom's PR units rose 4.3% in the second quarter to $336.1M as overall revenue at the conglomerate ticked up 2.1% to $3.6B for the period.

Net income rose 2.4% to $289.5M, the company reported today.

Organically, revenue at OMC PR units including Porter Novelli, Ketchum and FleishmanHillard climbed 3.8%, compared with a 4.3% organic rise for advertising ($1.8B) and relatively flat revenue at its customer relationship management division ($1.3B).

For the first half of 2013, Omnicom PR revenues are up 4% (2.9%) organically on revenue of $654.5M.

OMC's acquisition expenses are $59.4M for the first half, including $13.2M for buying firms and stakes and $46.2M for earn-outs on prior deals.

Debt for the 12 months ended June 30 topped $4B, up from $3.9B in 2012. Debt excluding cash and investments was $1.4B for the period, down from $1.7B in 2012.

Asked about the second half of 2013, CFO Randall Weisenburger said in a conference call July 18, "It's certainly encouraging to see how this quarter came out."