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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.


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MSFT
Jul 23, 2026, 11:00 AM EDT
Source: Reuters
Importance Score:
8
Price at Filing: $379.41
Real-time Price: $381.40 info
Change: +$1.99 (+0.52%) info
Market Cap: $2.835T info
MSFT
Jul 22, 2026, 10:59 AM EDT
Filing Type: PX14A6G
Importance Score:
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Real-time Price: $381.40 info
Change: -$8.10 (-2%) info
Market Cap: $2.835T info
MSFT
Jul 22, 2026, 8:45 AM EDT
Source: Dow Jones Newswires
Importance Score:
7
Price at Filing: $399.47
Real-time Price: $381.40 info
Change: -$18.07 (-5%) info
Market Cap: $2.835T info
MSFT
Jul 22, 2026, 3:14 AM EDT
Source: Wiseek News
Importance Score:
8
Price at Filing: $396.15
Real-time Price: $381.40 info
Change: -$14.75 (-4%) info
Market Cap: $2.835T info
MSFT
Jul 21, 2026, 8:30 AM EDT
Source: PR Newswire
Importance Score:
8
Price at Filing: $397.89
Real-time Price: $381.40 info
Change: -$16.49 (-4%) info
Market Cap: $2.835T info