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The recent entry of Elon Musk's SpaceX (SPCX) into public markets has garnered investment interest on Capitol Hill, with half a dozen lawmakers taking stakes in the company, according to recently disclosed transactions. 

The first apparent purchase was made by Rep. Lisa McClain, a Republican and member of House Speaker Mike Johnson's leadership team. Her husband purchased between $100,000 and $250,000 in Musk's xAI in December 2025, before it was folded into SpaceX in February, giving the lawmaker and her family early exposure to the public debut on June 12.

SpaceX's initial public offering then saw five more lawmakers make purchases, according to the disclosures. 

Rep. John James, a Michigan Republican, was first in, as his wife Liz bought between $15,000 and $50,000 worth of stock on the day of the IPO.

A spokesperson for the congressman told Yahoo Finance that "the James children are excited about space exploration and Liz purchased stock for them through a brokerage firm, like other members of the public were welcome to do."

Three more GOP lawmakers — Rep. Daniel Meuser of Pennsylvania, William Timmons of South Carolina, and John McGuire of Virginia — obtained shares three days later. 

A Democrat even got involved. Gilbert Cisneros of California bought between $1,000 and $5,000 worth of shares on June 18.

These six lawmakers have invested between $182,000 and $480,000 in the venture so far. Lawmakers are required to file financial disclosures of their stock trades within 30 days, meaning more legislative trading for July could be revealed in the weeks ahead.

The trades gained immediate notice from services that have sprung up in recent years to track lawmaker trading activity, and they raised another round of questions about lawmakers' portfolios and their official duties, especially as many of these lawmakers work in areas where SpaceX has interests.

McGuire and Cisneros sit on the House Armed Services Committee, which oversees SpaceX's military contracts. Timmons chairs the House Oversight Committee's Subcommittee on Military and Foreign Affairs.

James sits on the House Energy and Commerce Committee, which oversees issues closely related to Starlink, the satellite internet service run by SpaceX. James is also currently running for governor of Michigan.

SpaceX stock has been on a bumpy ride in recent weeks, repeatedly hitting all-time lows, meaning that these lawmakers' purchases are in the red right now.

Yahoo Finance asked representatives for all six lawmakers why the Congress members made the trades and whether they overlapped with their official work. Several distanced themselves from the purchases. 

Cisneros added in a comment to Yahoo Finance that his portfolio is managed by outside advisers. 

"We do not manage the day-to-day trading of our investment portfolio," he added in a statement about his and his wife's trades. "Nor have we ever suggested a trade while serving in Congress or at the Department of Defense."

"Chairwoman McClain's investments are a matter of public record," said Joe Buccino, House Republican communications director. "They have been made in line with all House rules and applicable laws."

Representatives for Meuser, McGuire, and Timmons didn't respond to repeated requests for additional context on the trades. Meuser's disclosure indicated that a dependent child purchased the SpaceX stock, and McGuire's indicated his spouse made that purchase. 

These initial investments are sizable enough to make up an increasing share of lawmakers' portfolios. The manager of an ETF that aims to mirror all GOP lawmaker portfolios has increased the value of SpaceX stock to about 1.3% of all holdings.

Long-running efforts to ban lawmaker stock trading have gained little traction. A partial ban passed the House last week — with both Timmons and James as co-sponsors — but isn't expected to advance in the Senate.

Sen. Pete Ricketts, a Republican from Nebraska, is one of that bill's proponents. Called the Stop Insider Trading Act, it would ban stock purchases but not the holding or selling of stocks. 

He tried to spur action in the Senate this week, writing in an op-ed that trust is being undermined in part because "today, mimicking a few lawmakers' trades is a legitimate investment strategy."

This story has been updated.

Ben Werschkul is a Washington correspondent for Yahoo Finance.

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