President Trump late Friday released his updated personal financial disclosure forms as the investigation into potential collusion between his presidential campaign and Russia, and possible obstruction of justice, continues to deepen.

"President Trump welcomed the opportunity to voluntarily file his personal financial disclosure form; while this filing is voluntary (as no report was due until May 2018), it has been certified by the Office of Government Ethics pursuant to its normal procedures," the White House said in a statement.

Trump sold his stocks in June 2016, but the disclosure forms report the income from the sales of those stocks; their value is now zero. Among the stocks the president previously owned is Raytheon Co. (RTN) - Get Report , the maker of the Tomahawk missiles Trump dropped in Syria in April.

He was also a Caterpillar Inc. (CAT) - Get Report shareholder, although the disclosure misspells the company's name as Caterpiller. The company is currently the subject of a federal raid pertaining to taxes and overseas business dealings. Another company, like Caterpillar, which Trump praised and previously owned shares of is Ford Motor Co. (F) - Get Report .

He owned stocks and bonds in several companies he's criticized, including Boeing Co. (BA) - Get Report , General Motors Co. (GM) - Get Report , Apple Inc. (AAPL) - Get Report and Inc. (AAPL) - Get Report . Trump also owned shares of AT&T Inc. (T) - Get Report , which is planning a merger with Time Warner Inc. (TWX) . Time Warner owns CNN, which Trump has lambasted for coverage he perceives as overly negative, and the president reportedly wants to block the merger.

Companies he's criticized which he did not own include United Technologies Corp. (UTX) - Get Report , Mondelez International Inc. (MDLZ) - Get Report , Rexnord Corp. (RXN) - Get Report and Lockheed Martin Corp. (LMT) - Get Report .

Trump made his name as the host of "The Apprentice" reality show, and he previously owned a small stake in NBCUniversal Media LLC, now owned by Comcast Corp. (CMCSA) - Get Report . He also owned a stake in the Miss Universe pageant, co-owning it with NBC. NBC dropped its relationship with Trump after his controversial campaign roll-out exactly two years ago; Trump bought out NBC's stake and sold the pageant to talent agency WME-IMG days later. "Beauty pageant related revenue" earned the president almost $11 million.

Trump earned $37.3 million in revenue from his Mar-a-Lago club in Florida and $19.8 million from his Trump National Golf Club in Bedminster, New Jersey, both of which he visits almost every weekend. Mar-a-Lago revenue rose from $29.8 million in 2016 and $15.6 million in 2015.

He's also promoted his Old Post Office hotel in Washington, D.C., a property which the attorneys general of Maryland and the District of Columbia on Monday accused the president of violating the Constitution's emoluments clause. A loan against that property from Deutsche Bank AG DB for over $50 million matures in 2024. The asset earned the president $19.7 million. Deutsche Bank also holds mortgages and term loans for three other Trump properties totaling at least $80 million

Trump took in royalties from a few of his books. The Art of the Deal and Time to Get Tough, published in 1987 and 2011, respectively, both earned between $100,001 and $1 million, while 2009's Think Like A Champion earned $15,001 to $50,000 and 2004's How to Get Rich earned $5,001 to $15,000. None of his other books earned significant royalties.

The president also earned a pension of $84,292 from the Screen Actors' Guild. Besides NBC's "The Apprentice," he has appeared as himself in several movies and TV shows, most notably "Home Alone 2: Lost in New York," in 1992.

Among Trump's current assets is an investment in gold valued between $100,001 and $250,000.

Editors' pick: Originally published June 16.