Microsoft stock fell 2.2% on Tuesday, November 10, 2026, closing at $533.16, after Anthropic launched Claude Sheets and a set of other workplace apps that compete with Excel and Microsoft 365. At its worst point, just after midday in New York, the stock was down about 3.4%. Anthropic itself says Sheets is basic for now and not built for serious financial modelling, which is why some commentators told investors not to panic.[1][4][10][11]
 | |
| Stock | Microsoft Corp. (Nasdaq: MSFT) |
|---|---|
| Close, Nov 10 | $533.16 (-2.20%, -$12.02) |
| Day's low | $526.36 (about -3.4%) |
| Previous close | $545.18 (Nov 9) |
| Recent high | $559.15 (Nov 4) |
| Trigger | Anthropic's Claude Sheets, Whiteboards, Meetings and Claude Data |
| Price of new apps | No new price; included in paid Claude plans |
| Anthropic IPO | $70-$78 a share, roadshow started Nov 10 |
How far Microsoft stock fell
Microsoft opened at $543.41 and drifted sideways all morning. The drop came fast: between about 12:00pm and 12:45pm Eastern time the stock went from roughly $543 to a low of $526.36. It clawed back part of that in the afternoon and closed at $533.16, down $12.02 or 2.20% from Monday's $545.18 close.[10][11]
CNBC's midday market report described a 3% "sudden move" after Anthropic announced its new tools, and TradingKey put the stock at $530.39, down more than 3%, while the selling was at its heaviest.[4][6] Investing.com, in a story carried by Yahoo Finance, said the slide had already started at about 2% after Bloomberg reported the launch ahead of Anthropic's event, and MLQ.ai's timeline says the same.[5][13]
The fall came from a high base. Microsoft hit $559.15 during trading on November 4, its highest price of the past year, so Tuesday's close left it about 4.6% below that peak. FXLeaders described the move as the stock retreating from "a record high near $560".[10][12]
It was also a weak day for tech generally, with US inflation data coming in hot that morning. Our US CPI October 2026 explainer has the index closes, but Microsoft fell much more than the broad market.
What Anthropic launched
Anthropic, the company behind the Claude AI models, announced three new apps inside Claude and renamed a fourth. "Starting today, Claude can build spreadsheets, whiteboards, and dashboards with your team," the company said in the post CNBC quoted.[1][4]
Claude Sheets
Sheets is a spreadsheet that Claude builds and edits with you. You can ask for something like a campaign tracker or a hiring budget, and Claude produces a working file with tabs, formulas, formatting and drop-down menus. Teammates can edit the same sheet, and Claude lists each change it makes to the cells so people can check its work. Files export to .xlsx or CSV.[1][2][3]
Claude Whiteboards
Whiteboards is a shared brainstorming board. Claude groups everyone's notes by theme, turns a plan you talk through into a timeline with owners and dates, and drafts action items for each person. A finished board can become a document or a slide deck.[1][2]
Claude Meetings
Meetings puts Claude into a video call as a visible participant. While people talk, it can draft the plan being discussed, build a timeline on a whiteboard, answer questions in the chat and pull figures from connected work apps. It posts a notice that it is in the call, will not join calls with outside guests unless an admin allows it, and leaves if one joins. At launch it only works with Google Meet.[2][3]
Claude Data and interactive connectors
Claude Dashboards, which launched in beta in October, is now generally available under a new name, Claude Data. It connects to company data in tools such as Amazon Redshift, BigQuery and ClickHouse and answers questions with dashboards, written data stories or narrated videos. Anthropic also now lets partner apps, starting with names like Adobe, Atlassian, Box, Notion and HubSpot, open in full inside Claude so Claude can work in them.[1][2][3]
Who can use them and what they cost
Sheets and Whiteboards are in beta on all paid Claude plans, on the web, desktop and mobile apps. Meetings is in beta for Team and Enterprise customers only. On Team plans the new apps are switched on by default; on Enterprise plans Sheets and Whiteboards start switched off, and Claude Data turns on by default on November 19, 2026.[1][2] Anthropic did not announce a separate price. The apps come with existing paid subscriptions.[1][13]
Why investors sold Microsoft
Office is one of Microsoft's most important businesses. In the quarter to September 30, Microsoft Cloud revenue was $63.9 billion, up 30%, and Microsoft 365 commercial cloud grew in the high teens, mainly because customers paid more per seat for upgrades such as Copilot.[9][6] TradingKey and FXLeaders both estimate that Microsoft 365 cloud revenue, about $27.8 billion in the quarter, makes up roughly 30% of the company's sales.[6][12]
The worry is less that companies will cancel Microsoft 365 tomorrow. It is that the new money companies spend on AI at work might go to Claude instead of to Microsoft's paid Copilot add-ons, which is where much of Microsoft 365's recent growth has come from. TradingKey framed it the same way: the fight is over new AI budgets and over which app workers open first in the morning.[6]
Anthropic is not the only one pushing in. TechCrunch notes that OpenAI released workplace tools for ChatGPT a few weeks earlier, letting users build presentations and visualise company information.[2][13]
"Don't panic": the case that the drop is overdone
Barron's ran its story under the headline "Microsoft Stock Falls as Anthropic Unveils Excel Competitor. Don't Panic," while Investor's Business Daily and Business Insider covered the slide as a direct challenge to Office.[7][8]
The strongest point for the calmer view comes from Anthropic. Its own launch post says sheets "have simple spreadsheet functionality" for now and sends people who need "the full functionality of Excel" to export the file or use Claude for Excel, its add-in that runs inside Microsoft's app.[1] Nicholas Lin, an Anthropic product leader, told Bloomberg that Sheets "is still a relatively basic product" and is not designed for sophisticated financial modelling or advanced enterprise work.[5][6]
The two companies are also tied together. Microsoft is one of the investors, with Google, Nvidia and AMD, in a separate $26 billion private placement linked to Anthropic's stock market listing, according to Anthropic's filing as reported by Investing.com and MLQ.ai.[5][13] So Microsoft has money riding on Anthropic doing well, even as Anthropic competes with one of its core products.
Other software stocks
Google makes Google Sheets and Meet, but Alphabet shares barely moved, closing down 0.27%. Adobe and Salesforce also slipped less than 1%. The bigger falls among work-software names were at Atlassian, Asana and monday.com, each down more than 4%. Atlassian is one of the launch partners for Claude's interactive connectors, and Asana and monday.com are named as partner tools for Sheets. We did not find a report that tied their falls to the launch, so treat the table as context, not cause.[1][10][11]
The Anthropic IPO angle
The launch landed on the same day Anthropic started the roadshow for its initial public offering, where it is offering shares at $70 to $78. Gizmodo reported that the company is expected to start trading on November 19, a date Anthropic has not confirmed. The full numbers, from the price range to how much each co-founder is selling, are in our Anthropic IPO price range and valuation explainer.[7][14]
The office apps arrived a day after Anthropic's new models. If you want to know what powers them, see Claude Fable 5.2 and Mythos 5.2 explained. For how nervous markets are about AI spending right now, our CoreWeave Q3 earnings page covers another AI stock that swung the same evening.
Timeline
| Date | Event |
|---|---|
| Nov 4 | MSFT hits $559.15 during trading, its 52-week high |
| Nov 9 | MSFT closes at $545.18 |
| Nov 10, about noon ET | Bloomberg reports the coming Claude office apps; MSFT starts to slide |
| Nov 10, 12:30pm ET | Anthropic announces Claude Sheets, Whiteboards, Meetings and Claude Data |
| Nov 10, 4pm ET | MSFT closes at $533.16, down 2.20% |
| Nov 10 | Anthropic IPO roadshow begins ($70-$78 range) |
| Nov 19 | Claude Data switches on by default for Enterprise plans; Anthropic's reported listing date |
Frequently asked questions
Why did Microsoft stock go down today?
On November 10, 2026 it fell 2.2% after Anthropic launched Claude Sheets and other workplace apps that compete with Excel and Microsoft 365.[4][10]
What is Claude Sheets?
A spreadsheet inside Claude that the AI builds and edits with you, with tabs, formulas, formatting, drop-downs, shared editing and export to .xlsx or CSV.[1][3]
Is Claude Sheets free?
No. It is in beta on paid Claude plans, and Anthropic did not set a separate price for it.[1][3]
Can Claude Sheets replace Excel?
Not yet, by Anthropic's own account. It calls the features simple for now, says it is not built for sophisticated financial modelling, and points heavy users to Excel through its Claude for Excel add-in.[1][5]
Does Claude Meetings work with Zoom or Teams?
Not at launch. It works with Google Meet only, for Team and Enterprise customers.[2][3]
Does Microsoft own part of Anthropic?
Microsoft is among the investors in a $26 billion private placement tied to Anthropic's IPO, alongside Google, Nvidia and AMD.[5][13]
This page explains a news event. It is not financial advice and does not recommend buying or selling any stock.
References
- "Introducing Claude Whiteboards, Claude Sheets, and Claude Data". Claude by Anthropic. November 10, 2026.
- "Anthropic launches Claude Meetings to turn workplace discussions into plans and tasks". TechCrunch. November 10, 2026.
- "Anthropic takes on Google and Microsoft with Claude Sheets". Engadget. November 10, 2026.
- "Stocks making the biggest moves" (live updates). CNBC. November 10, 2026.
- "Microsoft stock falls as Anthropic takes aim at Excel and workplace software". Investing.com, via Yahoo Finance. November 10, 2026.
- "Microsoft Shares Drop Over 3% as Anthropic Launches Office Tools, Sparking Microsoft 365 Competition Concerns". TradingKey. November 10, 2026.
- "Anthropic Goes for Microsoft's Crown With New Claude-Powered Office Tools". Gizmodo. November 10, 2026. Barron's headline: "Microsoft Stock Falls as Anthropic Unveils Excel Competitor. Don't Panic." November 10, 2026.
- "Microsoft Stock Falls On Anthropic's Challenge To Office Software". Investor's Business Daily. November 10, 2026. Also: "Microsoft Stock Drops After Anthropic Unveils Tools to Rival Office". Business Insider. November 10, 2026.
- "FY27 Q1 press release". Microsoft Investor Relations. October 28, 2026.
- "Microsoft Corporation (MSFT) stock price" and peer quotes. Yahoo Finance chart data. Checked November 11, 2026, 01:30 GMT.
- "Microsoft Corp (MSFT)" and peer quotes. Google Finance. Checked November 11, 2026, 01:30 GMT.
- "Microsoft MSFT Stock Drops From $560 on Excel Challenge Following Anthropic Workplace Software Announcement". FXLeaders. November 10, 2026.
- "Anthropic launches Claude Sheets and Meetings in a push into office software as Microsoft shares fall". MLQ.ai. November 10, 2026.
- "Anthropic launches roadshow for proposed initial public offering". Anthropic. November 10, 2026.