Jimmy's Journal
Substacknewsletter · by Jimmy Investor · English
We help investors build long-term wealth through institutional-grade research. Subscribe now and start compounding.
- Audience
- 10K subscribers
- Shown publicly on Substack
- Observed frequency
- Several times a week
- From 5 posts indexed in the last 90 days
- Last post
- Nov 2, 2026
- 9 days ago
- Likely audience
- Equity investors
- Inferred from post content
Jimmy's Journal is a Substack newsletter by Jimmy Investor covering Data Center Infrastructure, Copper vs. Optical Cabling and High Voltage Power Delivery. NewsletterFIT indexed 5 posts from it in the last 90 days, most recently on Nov 2, 2026. Shown publicly on Substack: 10K subscribers.
Topics
- Data Center Infrastructure
- Copper vs. Optical Cabling
- High Voltage Power Delivery
- AI Hardware Scaling
- Electrical Engineering
Recent posts
- 5 Lessons…
- Why So…
- How to…
- 4 Boring…
- The Agentic…
Sponsors detected
No sponsored posts detected in the last 180 days of indexed posts.
Detected automatically from posts marked as sponsored. Detection can miss or misread placements.
See the full picture on Jimmy's Journal
Subscriber momentum over time, every detected sponsor with the source post, companies and people it mentions, guests, and an alert when any of it changes.
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Compiled from public pages · refreshed Nov 2, 2026 · How NewsletterFIT collects and labels data