WASHINGTON  As President Obama and Congress intensify the push to overhaul health care in the coming week, the political and economic force of that industry is well represented in the financial holdings of many lawmakers and others with a say on the legislation, according to new disclosure forms.

The personal financial reports, due late last week from members of Congress, show that many lawmakers hold investments in insurance, pharmaceutical and prescription-benefit companies and in hospital interests, all of which would be affected by the administration’s overhaul of health care.

The lawmakers’ stakes are impossible to quantify because the reports ask for ranges of value for each asset, and because many officials’ holdings are in stock index and mutual funds. The Senate majority leader, Harry Reid of Nevada, for example, has interests in a stock index fund for the health care sector of more than $50,000 and up to $100,000.

Representative Dave Camp of Michigan, the senior Republican on the Ways and Means Committee, one of three panels in the House with jurisdiction over health care, reported at least tens of thousands of dollars in health-related interests, including the medical technology giant Medtronic, the drug maker Wyeth and the insurance company Aetna.