Key Highlights

  • DoorDash (NASDAQ:DASH) agreed to buy Instacart, formally Maplebear, for about USD 17 billion in cash and stock, announced on October 29, 2026 and first reported on October 26, a timeline that shows the news had partly leaked.
  • DoorDash shares rose about 5% to 5.6%, while Instacart fell about 1% to 2%, so the market favored the buyer over the target on the announcement day, a split that is unusual for a deal of this kind.
  • Closing is expected in late 2027 or the first half of 2028, a long window that implies a lengthy antitrust review of the combined grocery delivery business.
  • Price per share, premium and financing for DoorDash (NASDAQ:DASH) were not verified here because the company filings could not be opened, so those terms are left out and should be read in the filing.

The Announced Deal

DoorDash (NASDAQ:DASH) announced on October 29, 2026 that it will buy Instacart for about USD 17 billion in cash and stock. The deal had been reported first on October 26. Published accounts agree on the headline value and on the expected closing, which is late 2027 or the first half of 2028. The company release and the filing exist, but their text was not opened for this article, so the price per share, the premium over Instacart's price, the cash and Stock Split and the financing are not stated. DoorDash rose about 5% to 5.6% on the news, while Instacart, which trades as Maplebear (NASDAQ:CART), fell about 1% to 2%.

Why the Closing Is So Far Away

A closing date more than a year away usually signals a long regulatory review. DoorDash (NASDAQ:DASH) and Instacart are both large grocery and restaurant delivery platforms, so competition regulators may ask whether a combination reduces choice for shoppers and for retailers. That is an inference from the long timetable and not a statement from the companies. The target price also matters: a stock deal ties the value paid to DoorDash's own share price, which may change before closing. A rising buyer share price is unusual for a deal of this size, because buyers often fall on announcement, but the market may be pricing in savings or growth, though the companies' own estimates were not retrieved.

Risks and What to Watch

Antitrust is the largest risk, because regulators could Demand changes or block the deal, and a long wait leaves time for the market to change. A second risk is price: if DoorDash (NASDAQ:DASH) shares fall, the value of the stock part of the offer falls too. A third is integration, since combining two large platforms can be costly and slow, and benefits are not guaranteed. The market tone also matters, since a weak tape can erase a deal gain, with Nasdaq-100 futures about 2.5% lower on October 30. Readers should read the filing for terms. Watch the 9:30 a.m. ET open, analyst notes, Apple on November 2, and midterm elections on November 3, 2026.

Where Things Stand

DoorDash (NASDAQ:DASH) rose because it announced a USD 17 billion purchase of Instacart that investors received better than most buyers see, while Instacart barely moved. The evidence on size and timing is consistent across accounts, but terms and financing were not verified. A closing in late 2027 or early 2028 leaves long antitrust and market risk, so the filing is the next thing to read.