Donald Trump bought at least $1m worth of bonds in Netflix and Warner Bros Discovery (WBD), according to a financial disclosure form, days after he said would “be involved” in a proposed merger between the two companies.

The White House released a financial disclosure report on Friday which showed that Trump made two purchases from Netflix and two purchases from WBD, each amounting to at least $502,000.

Trump bought the bonds on 12 December and 16 December, a little more than a week after Netflix agreed to buy WDB in an $82.7bn deal.

The purchase is subject to regulatory clearance and is sure to raise eyebrows given Trump has said he will be engaged in that process.

“They have a very big market share,” Trump told reporters at the Kennedy Center on 7 December, two days after the deal was announced and five days before he began to purchase Netflix and WBD bonds.