Best Performance Optimization Newsletters in 2026

NewsletterFIT tracks 6 newsletters that cover Performance Optimization as a primary topic, 4 of them with posts in the last 90 days. By publicly shown subscriber count, the largest are Hard Court (6K), Performance DNA (4K) and jocul interior (1K).

Updated Nov 7, 2026 · sorted by publicly shown subscribers · methodology

  1. 1
    Hard Court6K subscribers

    SubstackWeekly · last post 3 days ago

    From recent posts: Hard Court publishes a weekly mix of interviews, industry analysis, and market reports focused on professional tennis and its commercial ecosystem. The publication covers athlete psychology, sports marketing, brand…

    Likely audience: tennis fans

  2. 2
    Performance DNA4K subscribers

    Substacklast post May 12, 2026

    From recent posts: Performance DNA publishes articles on high-performance psychology, team dynamics, and recovery strategies for executives and elite athletes. The content mixes in-depth essays on topics like the NBA Draft Combine…

    Likely audience: Burnout survivors

  3. 3
    jocul interior1K subscribers

    SubstackEvery two weeks · last post 11 days ago

    From recent posts: This Romanian article argues that business success comes from focusing on specific problems rather than just growth targets, using the Theory of Constraints and Tim Gallwey's Inner Game as frameworks. The author illustr…

    Likely audience: Entrepreneurs

  4. 4
    SAP Interview-Ready—

    LinkedInEvery two weeks · last post 22 days ago

    Revision Content for your next upcoming SAP Interview

    Likely audience: SAP BW/4HANA consultants

  5. 5
    Workforce Insights—

    LinkedInEvery two weeks · last post 18 days ago

    The latest in workforce intelligence

    Likely audience: Sports Operations Managers

  6. 6
    Power BI Insider—

    Substacklast post Mar 16, 2025

    Power BI Secrets From a Finance Professional

    Likely audience: Power BI developers

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