Mostly Borrowed Ideas
@borrowed_ideas
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Equity analyst sharing my investing journal. Daily Dose emails + monthly Deep Dive on one public company. Subscribe: https://t.co/bBHyta1Omy
Sacramento, CA
Joined July 2019
Messaging Opportunity and Group Chat Dynamics read the full piece here: https://t.co/Nn3vUlwrvl
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Messaging Opportunity and Group Chat Dynamics read the full piece here: https://t.co/Nn3vUlwrvl
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I really enjoyed this piece from @borrowed_ideas on GPU lifespan and the "value cascade". Latest AI chips are being used to train the big frontier models. Prior gen chips then become more useful for inference and fine-tuning. Even older chips are then relegated to other non-AI
mbi-deepdives.com
In early 2025, I wrote about big tech’s deteriorating earnings quality primarily because of their gradual extension of useful lives for their servers in the last five years. Over the course of this...
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The appeal of conversational commerce $AMZN $GOOG read the full piece here: https://t.co/d7dpLSlsDD
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The Great Concentration of Productivity "Since the late 1980s, the IT sector has been responsible for ~45% of all TFP growth in the U.S. economy. It has done this while accounting for only 8% of the private business sector’s total value added." https://t.co/lv5QyC9HTu
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"After telling the investors to take third-party estimates with a grain of salt, Friar acknowledged a chink in ChatGPT’s armor. She said time spent had declined “slightly” in response to “content restrictions” the company rolled out in early August. She then referred to the
sources.news
OpenAI’s CFO told investors that ChatGPT's engagement has softened. Also: Mark Zuckerberg's AI bubble warning to Meta employees.
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How is your ChatGPT (not just any AI) usage trending month over month?
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Why I may have underestimated the potential for $ABNB Experiences read the full piece here: https://t.co/YCg6rea5Sq
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Why I may have underestimated the potential for $ABNB Experiences read the full piece here: https://t.co/YCg6rea5Sq
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some correction here on $CSU ROIC While not fun to make mistakes in public, it is a cost I am very much willing to pay to improve my thinking and process. read the piece here: https://t.co/F1BD9oj1E7
Since 1Q'23, $CSU invested capital doubled, but their ROIC remained quite sticky around ~30%. Read my CSU 3Q'25 coverage: https://t.co/NqbnlK6cAh
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Since 1Q'23, $CSU invested capital doubled, but their ROIC remained quite sticky around ~30%. Read my CSU 3Q'25 coverage: https://t.co/NqbnlK6cAh
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How would we know if market were "AGI" pilled? read the full piece here: https://t.co/V5oqLUzpgY
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Key takeaways from 3Q'25 earnings in digital advertising: $META continues to gain market share every quarter. For the first time, $GOOGL advertising market share was below 50%. From 3Q’21 to 3Q’25, Meta and $AMZN gained ~300 bps and ~400 bps market share, largely at the
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Key takeaways from 3Q'25 earnings in digital advertising: $META continues to gain market share every quarter. For the first time, $GOOGL advertising market share was below 50%. From 3Q’21 to 3Q’25, Meta and $AMZN gained ~300 bps and ~400 bps market share, largely at the
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This was an exceptional conversation. I hope @benthompson brings Michael Morton more often on Stratechery. Highly recommended.
11-6-2025 ($) An Interview with Michael Morton About AI E-Commerce https://t.co/7agCjqxEX3
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