Payer

Stockholders in both Los Angeles-based Health Net and St. Louis-based Centene voted to approve the proposed merger between the two organizations.

Medicare Advantage members are on average more satisfied with their health plans than commercial plan members, according to a survey from J.D. Power.

South Carolina-based Consumers' Choice Health Insurance, a nonprofit cooperative, has agreed to a voluntary "run-off" and will not sell policies for 2016, according to The Post and Courier.

Cheyenne, Wyo.-based WINhealth, the second-largest health insurer in Wyoming, is shutting down, according to the Casper Star Tribune.

The following insurers made headlines this week. They are listed below, beginning with the most recent.

Nashville, Tenn.-based Vanderbilt University Medical Center and BlueCross BlueShield of Tennessee are at a stalemate over negotiations for the 2016 Medicare Advantage network, according to The Tennessean.

Presidential candidate Hillary Clinton is raising objections to health insurer mega-mergers, saying she has "serious concerns" about the proposed mergers between Anthem and Cigna and between Aetna and Humana, according to The Hill.

San Mateo, Calif.-based health insurance and software startup Collective Health closed an $81 million Series C funding round Tuesday, including investors Google Ventures, NEA and Founders Fund.

Four insurance giants — Aetna, Blue Cross & Blue Shield of Illinois, Humana and UnitedHealthcare — are returning to the Illinois health insurance exchange this year, according to Crain's Chicago Business.

Aetna's proposed $37 billion acquisition of Humana was approved by shareholders of both companies on Monday, according to Reuters.