Skip to main content
MSFT
NASDAQ Technology

Microsoft Restricts Employee Use of Anthropic's Claude Fable 5 Over Data Retention Concerns

Tom Rudovsky · Reported by Reuters
More coverage: Software Stocks · Technology
Sentiment info
Negative
Importance info
7
Price
$400.61
Mkt Cap
$2.976T
52W Low
$356.28
52W High
$555.45
52W Position info
12% above low
Off High info
28% below high
Rel. Volume info
0.5× avg
Market data snapshot near publication time

MSFT is trading near its 52-week low of $356.28 (12% above the low).

Summary

Microsoft has restricted its employees from using Anthropic's Claude Fable 5 AI model due to concerns over its new data retention requirements, according to The Verge. This decision comes as Anthropic rolls out its Mythos AI model with a 30-day data retention policy for prompts and outputs, and up to two years if flagged. For a company heavily invested in AI and cloud services, this highlights Microsoft's cautious approach to data security and intellectual property when integrating third-party AI tools. It is unclear if Microsoft's legal teams will eventually clear Claude Fable 5 for internal use.

At the time of this announcement, MSFT was trading at $400.61 on NASDAQ in the Technology sector, with a market capitalization of approximately $3T. The 52-week trading range was $356.28 to $555.45. This news item was assessed with negative market sentiment and an importance score of 7 out of 10. Source: Reuters.


Price Chart

Share this article

Copied!

MSFT - Latest Insights

MSFT
Sep 23, 2026, 12:33 PM EDT
Source: Reuters
Importance Score:
7
Price at Filing: $498.76
Real-time Price: $515.25 info
Change: +$16.49 (+3%) info
Market Cap: $3.808T info
MSFT
Sep 22, 2026, 7:40 PM EDT
Source: Reuters
Importance Score:
7
Price at Filing: $499.30
Real-time Price: $515.25 info
Change: +$15.95 (+3%) info
Market Cap: $3.808T info
MSFT
Sep 22, 2026, 11:14 AM EDT
Source: Seeking Alpha
Importance Score:
7
Price at Filing: $494.98
Real-time Price: $515.25 info
Change: +$20.27 (+4%) info
Market Cap: $3.808T info
MSFT
Sep 18, 2026, 5:34 PM EDT
Source: dpa-AFX
Importance Score:
7
Price at Filing: $495.14
Real-time Price: $515.25 info
Change: +$20.11 (+4%) info
Market Cap: $3.808T info
MSFT
Sep 10, 2026, 5:32 PM EDT
Source: Seeking Alpha
Importance Score:
7
Price at Filing: $490.00
Real-time Price: $515.25 info
Change: +$25.25 (+5%) info
Market Cap: $3.808T info