
Girdley's Letter
Investor Due Diligence Report
Essential insights for business owners.
2K
~0%
Subscriber count is a platform estimate
0.1
0.00%
(comments + likes) / subscribers
Weekly
1.0 posts/week
95/100
Very Consistent (~6.9d avg)
| Newsletter | Subscribers | Weekly Growth | Price | Platform |
|---|---|---|---|---|
| Founding Journey | 240K | N/A | $50/mo | substack |
| a16z speedrun | 202K | +4.0% | Free | substack |
| Refactoring | 173K | N/A | $15/mo | substack |
| Clouded Judgement | 87K | N/A | Free | substack |
Platform Dependency
Hosted on beehiiv subdomain
Publishing Consistency
Regular publishing schedule
Key Person
Single-author publication — key-person dependency
Audience Concentration
Hit-driven — top post engagement 3x+ above average
Subscriber threshold
2K subscribers — above the 2K category median for first paid tier
Has paid tier
No paid subscription tier yet
Peer monetization
100% of 695 similar-size peers in Business have paid tiers
Disclaimer: This report is generated automatically based on publicly available data and proprietary estimation models. Estimated subscriber counts are derived from engagement patterns and should be verified through direct disclosure. Revenue estimates are based on known pricing and estimated paid subscriber counts. This report is for informational purposes only and should not be the sole basis for investment decisions.
| Component | Score | Weight |
|---|---|---|
| Engagement Rate | 26/100 | 30% |
| Publishing Consistency | 100/100 | 10% |
| Secret Strategist |
| 78K |
| +0.7% |
| Free |
| substack |
Revenue Model
Pre-monetization — no paid subscription tier