Will Tesla or SpaceX announce a definitive, binding agreement for Tesla to acquire SpaceX, SpaceX to acquire Tesla, or the two entities to merge or combine in any structure that results in a transfer of controlling interest or consolidation of the two entities under common corporate ownership before Oct 1, 2026? — Before Oct 1, 2026
Open on Kalshi ↗Yes last at 4¢
The catch
Only a definitive, binding agreement announcement counts; deal completion is not required.
“If Tesla or SpaceX officially announces a definitive, binding agreement for Tesla to acquire SpaceX, SpaceX to acquire Tesla, or the two entities to merge or combine in any structure that results in a transfer of controlling interest or consolidation of the two entities under common corporate ownership before Oct 1, 2026, then the market resolves to Yes.” · market rules ↗
Pays out only if
Tesla or SpaceX must officially announce a definitive, binding agreement to merge, acquire each other, or consolidate.
“If Tesla or SpaceX officially announces a definitive, binding agreement for Tesla to acquire SpaceX, SpaceX to acquire Tesla, or the two entities to merge or combine in any structure that results in a transfer of controlling interest or consolidation of the two entities under common corporate ownership before Oct 1, 2026, then the market resolves to Yes.” · market rules ↗The other party has to be each other (Tesla and SpaceX)
“If Tesla or SpaceX officially announces a definitive, binding agreement for Tesla to acquire SpaceX, SpaceX to acquire Tesla, or the two entities to merge or combine in any structure that results in a transfer of controlling interest or consolidation of the two entities under common corporate ownership before Oct 1, 2026, then the market resolves to Yes.” · market rules ↗Has to happen before September 30, 2026
“If Tesla or SpaceX officially announces a definitive, binding agreement for Tesla to acquire SpaceX, SpaceX to acquire Tesla, or the two entities to merge or combine in any structure that results in a transfer of controlling interest or consolidation of the two entities under common corporate ownership before Oct 1, 2026, then the market resolves to Yes.” · market rules ↗Counts as done when: official announcement of definitive, binding agreement
“If Tesla or SpaceX officially announces a definitive, binding agreement for Tesla to acquire SpaceX, SpaceX to acquire Tesla, or the two entities to merge or combine in any structure that results in a transfer of controlling interest or consolidation of the two entities under common corporate ownership before Oct 1, 2026, then the market resolves to Yes.” · market rules ↗Decided by: Tesla, SpaceX, Securities and Exchange Commission EDGAR database, The New York Times, The Wall Street Journal, Bloomberg News, Reuters, the Associated Press, Financial Times, CNBC, Yahoo Finance, MarketWatch, Axios, Politico, The Information, The Washington Post, ABC, CBS, CNN, Fox Business, MSNBC, NBC
“The Source Agencies are, in hierarchical order, <company> (official company communications including press releases, SEC filings, investor relations announcements, and earnings calls), the Securities and Exchange Commission EDGAR database, The New York Times, The Wall Street Journal, Bloomberg News, Reuters, the Associated Press, Financial Times, CNBC, Yahoo Finance, MarketWatch, Axios, Politico, The Information, The Washington Post, ABC, CBS, CNN, Fox Business, MSNBC, and NBC.” · contract terms ↗
Does not count
Rumors, speculation, or unconfirmed reports
“Rumors, speculation, unconfirmed reports, leaked information, third-party announcements without company confirmation, and preliminary discussions do not qualify.” · market rules ↗Leaked information not officially confirmed
“Rumors, speculation, unconfirmed reports, leaked information, third-party announcements without company confirmation, and preliminary discussions do not qualify.” · market rules ↗Third-party announcements without company confirmation
“Rumors, speculation, unconfirmed reports, leaked information, third-party announcements without company confirmation, and preliminary discussions do not qualify.” · market rules ↗Preliminary discussions or negotiations
“Rumors, speculation, unconfirmed reports, leaked information, third-party announcements without company confirmation, and preliminary discussions do not qualify.” · market rules ↗
Watch out
- WATCHSome obvious wins don't count
WATCHThe venue keeps a right to review the outcome
“Before Settlement, Kalshi may, at its sole discretion, initiate the Market Outcome Review Process pursuant to Rule 7.1 of the Rulebook.” · contract terms ↗NOTEA specific counterparty is named
“If Tesla or SpaceX officially announces a definitive, binding agreement for Tesla to acquire SpaceX, SpaceX to acquire Tesla, or the two entities to merge or combine in any structure that results in a transfer of controlling interest or consolidation of the two entities under common corporate ownership before Oct 1, 2026, then the market resolves to Yes.” · market rules ↗
Read on 2026-09-10. Click a line for the sentence it rests on. Facts and gaps only, not a prediction.
The rules, in plain English
If Tesla or SpaceX officially announces a definitive, binding agreement for Tesla to acquire SpaceX, SpaceX to acquire Tesla, or the two companies to merge or combine in any way that transfers controlling interest or consolidates them under common ownership before October 1, 2026, the market resolves Yes. The announcement must be made through official company channels like press releases, SEC filings (8-K, 10-K, 10-Q), earnings calls, investor presentations, verified social media accounts, or official statements to media that the company later confirms. CEO statements through official channels count. Rumors, speculation, unconfirmed reports, leaked information, third-party announcements without company confirmation, and preliminary discussions do not count. The announcement must happen after the market is issued. Companies are tracked through rebranding and name changes. This market resolves Yes regardless of which company acquires the other. A Tesla acquisition of SpaceX, a SpaceX acquisition of Tesla, a reverse merger, or a stock-for-stock combination all count equally, as long as a definitive agreement is publicly announced. A statement by Elon Musk only counts if it is an unambiguous, affirmative confirmation of a definitive signed agreement — not an expression of intent, a hypothetical, a negotiation update, or a speculative comment about a future combination.
What the rules leave open
What constitutes 'controlling interest' - is it 50% ownership, or some other threshold?
closest the rules come: “If Tesla or SpaceX officially announces a definitive, binding agreement for Tesla to acquire SpaceX, SpaceX to acquire Tesla, or the two entities to merge or combine in any structure that results in a transfer of controlling interest or consolidation of the two entities under common corporate ownership before Oct 1, 2026, then the market resolves to Yes.” · market rules ↗Whether a holding company structure where both Tesla and SpaceX become subsidiaries of a new parent entity would qualify as 'consolidation under common corporate ownership'
closest the rules come: “If Tesla or SpaceX officially announces a definitive, binding agreement for Tesla to acquire SpaceX, SpaceX to acquire Tesla, or the two entities to merge or combine in any structure that results in a transfer of controlling interest or consolidation of the two entities under common corporate ownership before Oct 1, 2026, then the market resolves to Yes.” · market rules ↗How quickly after announcement must company confirmation occur for third-party or media statements to qualify
closest the rules come: “Official statement to media that is subsequently confirmed by <company> through official channels” · contract terms ↗