US President Donald Trump has recently bought at least $US82 million ($A126 million) in corporate and municipal bonds, including new investments in sectors benefiting from his policies.

According to the forms released by the US Office of Government Ethics on Saturday, Trump carried out more than 175 financial purchases from August 28 through to October 2.

The disclosures, made under a 1978 transparency law called the Ethics in Government Act, do not list exact amounts for each purchase, only providing a broad range.

The maximum total value of the bond purchases exceeded $US337 million ($A517 million), according to the filings.

Most of the assets listed in Saturday's disclosures consist of bonds issued by municipalities, states, counties, school districts and other entities with ties to

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