Tesla's digital asset holdings rose 43% during the third quarter, climbing to $962 million as of September 30 from $674 million at the end of June, according to the company's Q3 2026 update, released on October 21.

The entire $288 million increase shows up in Tesla's results as an unrealized gain, pointing to no net Bitcoin trading during the period — while merger discussions between Tesla and SpaceX could eventually place both companies' stacks under one roof.

Price, not trading, explains the gain

Under fair-value accounting, the change in a company's carrying value of digital assets over a quarter equals purchases, minus sales, plus the effect of price moves. When price explains the whole change, net trading was close to zero.

Bitcoin's own quarter-end prices support that reading. Tesla's June quarterly filing lists 11,509 BTC bought for $386 million. Working backwards, $962 million at Bitcoin's September close equals roughly 11,504 coins. Tesla reports the figure rounded to the nearest million dollars, which limits the precision to about six coins either way; a purchase or sale of any meaningful size would have shown up in the gap.

On those numbers, Tesla's retained Bitcoin position carries a paper gain of about $576 million over its purchase cost.

Merger committees put 30,221 BTC on one table

SpaceX, which began trading on Nasdaq this summer, reported third-quarter results on Tuesday. On the call, Musk said both boards had formed special committees of independent directors at shareholders' request and that he was excluded from their discussions as a conflicted party. He called a merger a "good idea" while saying a deal was not certain.

No terms have been agreed. On Tesla's side, approval would require a majority of all outstanding shares, a hurdle Musk himself described as high.

SpaceX's June quarterly filing lists 18,712 BTC bought for $661 million. Its Q3 results value digital assets at $1.573 billion, up from $1.098 billion in June. Spread across 18,712 coins, that is about $84,060 each, within 1% of Bitcoin's quarter-end close.

Coin counts and cost basis come from the June 30 filings; valuations come from the Q3 results. Based on BitcoinTreasuries.net data, the combined 30,221 BTC would rank sixth among listed companies' Bitcoin holdings.

What a merger would change — and what it wouldn't

A combined company would report both stacks without buying a single coin. Barclays has suggested a deal could be announced before Tesla's annual meeting, which must take place by December 6, with SpaceX as the likelier acquirer.

The two companies are already linked on paper. Tesla's $2 billion investment in xAI converted into a SpaceX stake of under 1% when xAI merged into SpaceX, according to DriveTesla Canada. That is an equity holding and adds no Bitcoin to Tesla's books.

Holding is also a decision Tesla has reversed before. In early 2021, it bought $1.5 billion of Bitcoin and sold part of it within the same quarter for $272 million, per its Q1 2021 filing. In mid-2022, it converted about 75% of its purchases into fiat, raising $936 million, as disclosed in an 8-K filing. Both sales became public only in quarterly results.

A merged board would inherit roughly $2.5 billion in Bitcoin. SpaceX alone spent $19.6 billion on capital projects in the third quarter, most of it on AI computing, so the coins would not be central to the combined company's finances. Neither company has said whether a merged business keep them, sell them, or buy more.

Next disclosures to watch

• Tesla's Q3 10-Q, which should state the exact coin count behind the $962 million
• Whether the committees agree terms before Tesla's annual meeting
• Any treasury policy for the 30,221 BTC set out in merger documents

This article is provided for informational purposes only and does not constitute financial or investment advice.

Source: Coindoo