Newsletter Insights — advertising rates and audience data for 35K+ newsletters
Browse all →Track Stock Doctor's growth
Get notified when subscribers, engagement, or pricing changes
Platform Portability
Uses Substack subdomain (stockdoctor.substack.com). Migrating would require subscribers to re-subscribe at a new address.
Custom domains let newsletters switch platforms without losing their audience.
Are you a newsletter creator? Get verified insights →
Physician with an interest in value investing. Highlighting undervalued compounders and sharing stock insights.
Data updated 1 month ago
vs 157 newsletters in Health
200 places you in the bottom half of newsletters in this category.
Engagement Rate
7.00%
median: 0.00%
Posts per Week
0.5
median: 1.0
Publishing Consistency
61/100
median: 65/100
Subscribers
200
median: 1K
6 paid
Track revenue changes over time
Start tracking — freeWe don't have enough growth data for Stock Doctor yet. The average Health newsletter has 1K subscribers.
Based on 816 Health newsletters tracked
Avg Comments
1.0
Avg Likes
13.0
Engagement Rate
7.00%· ~14 likes + comments/post
(comments + likes) / subscribers
Quality Score
Engagement vs Health
7.00% engagement rate
Score Breakdown
Engagement Score
| Public |
| Kaspi 2026: Flat income, future investments and... 10% dividends.A mixed earnings report with several bright spots.Mar 14, 2026 | Subscriber-only |
| EV/EBIT 2.7, 16-20%+ long-term CAGR, boats...Fountaine Pajot is undercovered, and definitely undervalued.Jan 31, 2026 | Subscriber-only |
| Dino Polska - A "factory" for building stores, and a long-term compounder. Grocery stores in rural Poland.Jan 16, 2026 | Subscriber-only |
| Kaspi (KSPI): 9 updates for the end of 2025 This is not investment advice...Dec 20, 2025 | Subscriber-only |
| Polish Value Stocks: Inter Cars SA vs. Auto Partners SA 5 year revenue CAGR of 18-20%, with PE ratios of 10-11.Dec 10, 2025 | Subscriber-only |
| 10 E-Commerce Stocks Ranked by Value Generation (VG)Amazon, Alibaba, JD, Mercardo Libre, Sea, PDD and more...Nov 20, 2025 | Subscriber-only |
| PDD is stronger than it appears: Q3 2025 Update "Be water, my friend."Nov 18, 2025 | Subscriber-only |
| SPV stands for "Scamming Purpose Vehicle."xAI - SPV, circular deals, and conflicts of interest.Oct 27, 2025 | Public |
| Portfolio Holdings: October 2025Planting the seeds.Oct 25, 2025 | Subscriber-only |
Bigger on the Inside: KateFoxWriter’s Substack
200 subs
I Can Only Speak for Myself
200 subs
The End-of-Life Educator
200 subs
Get email alerts when subscribers drop or spike, when new sponsors appear, when pricing changes, or when publishing cadence shifts. Track unlimited newsletters across your watchlist with the Starter plan.
$29/mo·cancel anytime
See what's includedGet the full whitespace list with each brand's category fit, audience overlap, and recommended pitch order. Plus a comparison of Stock Doctor vs the top 15 peer newsletters on sponsor mix, growth, and CPM.
$300·2-3 working days·refunded if we can't deliver
Publishing Frequency
Bi-weekly
Last published Apr 19, 2026
0.5 posts/week avg
Health Pricing
$6/mo median
Premium tier
Monetization Readiness
Already monetizing
100% of similar-size Health newsletters also have paid tiers
Unlock revenue estimates, CPM benchmarks, and detected sponsors
Start tracking — free