Key Highlights

  • Maplebear (NASDAQ:CART), the parent of Instacart, rose 3.5% after hours on October 28, 2026 on a report that DoorDash could announce an acquisition as soon as Thursday.
  • Nothing is confirmed. Neither company has announced a deal, and no price has been reported, so the move in Maplebear (NASDAQ:CART) reflects speculation rather than terms.
  • The advanced-talks report first appeared on October 26, 2026, and Uber talks are said to be off, which would leave DoorDash as the reported suitor.
  • Only the October 28 after-hours reaction is new. The Thursday timing is itself part of the report, so a missed deadline would be a risk for the stock.

What Was Reported

Media reports said on October 28, 2026 that DoorDash was in advanced talks to buy Maplebear (NASDAQ:CART), the company that operates Instacart, and that an announcement could come on Thursday, October 29. Maplebear shares rose 3.5% in after-hours trading, according to published market data. The first report of advanced talks appeared on October 26, so the October 28 reaction is the new element. The reports add that talks with Uber are off. There is no company confirmation from either side, and no price or structure has been reported, which limits what can be said about value. Because the talks were first reported two days earlier, the latest move adds timing, not substance.

How Takeover Reports Move Stocks

When a deal report names a target, the stock usually rises on the chance of a premium, then settles based on how credible the report looks. A rise of only 3.5% is modest for a takeover headline, which suggests traders are pricing uncertainty about whether a deal happens, and at what price, rather than a certain premium. A combination of two large delivery platforms would also raise questions about how much the businesses overlap, so regulators could review it. If DoorDash were the buyer, the structure could involve cash, shares or both, and the details would decide how closely Maplebear trades to the offer. Traders also weigh the report's source quality, since single-outlet stories can fade quickly.

Risks and What to Watch

The first risk is that nothing is announced. Reports of advanced talks often fail to produce a deal, and Maplebear (NASDAQ:CART) could give back the after-hours gain if Thursday passes quietly. A second risk is price: with no figure reported, the market has nothing to anchor to. Watch for a joint announcement or filing on October 29, a denial, and the regular-session open. Investors should treat the 3.5% gain as an early signal only. A formal deal would also bring antitrust scrutiny and a timetable for approvals, and a bid from a different party could change the picture. Because Maplebear is a consumer platform, quarterly demand and competition also stay in focus.

Where Things Stand

No, not yet, and nobody has confirmed that it will happen. Maplebear (NASDAQ:CART) rose 3.5% after hours on October 28, 2026 on a report that DoorDash could announce a deal for Instacart on Thursday, but the report remains unconfirmed and carries no price. The talks were first reported on October 26 and Uber is said to be out. The next catalyst is whether an announcement arrives on October 29 and, if it does, the terms and any regulatory questions.