As opposition to the Dodd-Frank Act builds, the pace of rulemaking continues to fall woefully behind schedule.

At the start of this month, just 37 percent of the 398 total required rulemakings have been finalized, while regulators have yet to even propose rules on one third of Dodd-Frank provisions, according to law firm Davis Polk & Wardell.

The delays make it difficult for companies to plan compliance with the rules, which in several cases require major changes to disclosure processes or data systems. Companies are caught between preparing for regulations that are still in flux or waiting for the final rules and ...