Vinson & Elkins and Baker Botts each had a piece of an initial public offering that closed Monday as the largest of the year so far.

On Oct. 21, Plains GP Holdings of Houston raised a net $2.73 billion in the offering, which sold at $22 a share.

Vinson & Elkins represented Plains GP Holdings, an energy company, in the IPO, while Baker Botts represented the underwriters.

The V&E team was led by partners David Oelman and Alan Beck, both of Houston, who were assisted by Houston associates Will Burns, Adam Law, Michael Rigdon and Lela Brodsky. Others involved were tax partner John Lynch of Houston; employee benefits partner Brian Bloom of Dallas; and associates Lina Dimachkieh and Laura Gieseke, both of Houston, and Missy Spohn of Dallas.

Partners Josh Davidson and Jason Rocha, both of Houston, and Steve Marcus of Dallas led Baker Botts’ team representing the underwriters in the IPO. Others involved were associates Matt McCoy, Bryan Cory, Nathan Tanner and Will Airhart, all of Houston, and Marissa Britton and Aaron Pinegar, both of Dallas; special counsel Chuck Campbell of Houston; and senior associate Emil Barth of Washington, D.C.