Paul Krugman
Investor Due Diligence Report
by Paul Krugman
substackEconomics
Notes on economics and more.
Investor Due Diligence Report
by Paul Krugman
Notes on economics and more.
577K
43.3K paid
+0.3%
+1.6%
net growth
Pricing
$7/mo
$70/yr annual option
$241K
43.3K paid subs
$169K/mo – $313K/mo(±30%)
467.2
2.6K
0.53%
(comments + likes) / subscribers
Daily
7.5 posts/week
89/100
Very Consistent (~1.1d avg)
| Newsletter | Subscribers | Weekly Growth | Price | Platform |
|---|---|---|---|---|
| Kyla’s Newsletter | 156K | +0.7% | $10/mo | substack |
| Geld für die Welt | 41K | N/A | $5/mo | substack |
| Alex Krainer's Substack | 34K | N/A | $5/mo | substack |
| Rational Optimist Society | 26K | N/A | Free | substack |
| Month | Subscribers | Est. Revenue | Change |
|---|---|---|---|
| Feb 2026 | 543K | $260,631.21 | — |
| Mar 2026 | 558.5K | $268,071.62 | +2.9% |
| Apr 2026 | 566K | $271,672.17 | ~0% |
| May 2026 | 573.5K | $275,267.16 | ~0% |
Platform Dependency
Hosted on substack subdomain
Publishing Consistency
Regular publishing schedule
Key Person
Single-author publication — key-person dependency
Audience Concentration
Consistent engagement across posts
Subscriber threshold
577K subscribers — above the 5K category median for first paid tier
Has paid tier
Active paid subscription offering
Pricing position
$7/mo vs $8/mo category median (191 newsletters)
| Date | Monthly | Annual |
|---|---|---|
| Jan 2026 | $7 | $70 |
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 | 100/100 | 30% |
| Paid Subscriber Ratio | 100/100 | 25% |
| Growth Consistency | 91/100 | 15% |
| Publishing Consistency | 60/100 | 10% |
| John Rubino's Substack |
| 23K |
| N/A |
| $5/mo |
| substack |
Revenue Model
Active paid subscription tier