Insurance premiums for small businesses are being driven higher not just because of an increase in healthcare costs, but also because Wall Street wants higher returns:

The higher premiums at least partly reflect the inexorable rise of medical costs, which is forcing Medicare to raise premiums, too. Health insurance bills are also rising for big employers, but because they have more negotiating clout, their increases are generally not as steep.

Higher medical costs aside, some experts say they think the insurance industry, under pressure from Wall Street, is raising premiums to get ahead of any legislative changes that might reduce their profits.

Now, you might think with health insurance reform pending in Congress, the industry would be concerned about screwing its customers. But you'd be wrong because Washington doesn't run this country, Wall Street does:

“There’s no one out there who hasn’t had to do a mea culpa to Wall Street,” said Sheryl Skolnick, an analyst for Pali Capital who follows the companies. While the industry is particularly vulnerable now in Washington, she said, “it seems like they’re more afraid of Wall Street.”