RG Intel™ — Growth Expansion Index Research Brief
RG Intel™ Research Week of Mar 23, 2026 PODCAST
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Growth Expansion Index (GXI) — PODCAST — Week of Mar 23, 2026

Weekly aggregated intelligence on growth signals, discovery concentration, and intervention windows (public, anonymized).

GXI Score
55.0
Band: High • Week of Mar 23, 2026
Low Moderate High Critical
Snapshot
  • 175 market signals observed
  • 5 titles in the attention set
  • Top surface driver:
Source Window

2026-03-23 00:00:00 → 2026-03-29 23:59:59

Published: 2026-03-25 02:34:02

This week’s GXI summarizes where discovery is concentrating, how demand is spreading, and which intervention windows matter most for timing, routing, and conversion. Public, aggregated, anonymized.

Slug: growth-expansion-index-podcast-2026-03-23
Week: 2026-03-23 → 2026-03-29
Growth Drivers
  • Surface concentration: Mixed surfaces
  • Momentum (72h): median 48.0 attention observations per title
  • Market activity: 175 observations across 5 titles
Analyst Notes
  • GXI score: 55.0 (0–100).
  • Signals observed: 175.
  • Territory mix: GB leads (76.0%). Top countries: GB, US.
  • youtube is currently capturing 64.6% of measured weekly discovery activity. Cycle state: Acceleration. Median 72-hour velocity: 48.00. Interpretation confidence: High confidence. Discovery is overly dependent on youtube, which increases fragility. Share-driven episode pickup is likely before broader platform conversion stabilizes.
  • Dominant signal types: mirror, unknown.
Surface Mix (Signals)

Aggregated distribution across monitored surfaces for this reporting window.

Velocity Sparkline (Median 72h)

Quick marker of propagation intensity (safe sparkline fallback).

Surface share snapshot
Surface Signals Share
youtube 113 64.6%
yandex 50 28.6%
seo_spam 6 3.4%
apple_podcasts 3 1.7%
baidu 2 1.1%

Public, aggregated, anonymized. This index is a relative risk signal (0–100). It is not a legal conclusion.

Weekly Snapshot

  • Week: Mar 23, 2026 → Mar 29, 2026
  • Asset class: PODCAST
  • Total signals: 175
  • Titles in attention set: 5
  • Top discovery surface: youtube (64.6%)
  • Active-hour signal pace (72h): 48.00
  • GXI score: 55.0

What this week indicates

This weekly build is designed to show not just where attention exists, but where next-stage demand is most likely to form, which surfaces are actually carrying the title, and what intervention windows matter before momentum diffuses or gets captured inefficiently.

Key weekly reads

  • GXI score: 55.0 (0–100).
  • Signals observed: 175.
  • Territory mix: GB leads (76.0%). Top countries: GB, US.
  • youtube is currently capturing 64.6% of measured weekly discovery activity. Cycle state: Acceleration. Median 72-hour velocity: 48.00. Interpretation confidence: High confidence. Discovery is overly dependent on youtube, which increases fragility. Share-driven episode pickup is likely before broader platform conversion stabilizes.
  • Dominant signal types: mirror, unknown.

Surface share snapshot

SurfaceSignalsShare
youtube11364.6%
yandex5028.6%
seo_spam63.4%
apple_podcasts31.7%
baidu21.1%

Signal quality / audience reference

  • Dominant signal types: mirror, unknown

Top 5 Expansion Titles

Title-level intelligence on where discovery is concentrating, what likely happens next, and which interventions can improve conversion efficiency.

#1 — rosebud with gyles brandreth (Country: GB)

  • Signals: 79
  • Primary discovery surface: yandex
  • Surface share: 63.3%
  • Cycle state: Acceleration
  • Interpretation confidence: Good confidence (76/100)
  • Estimated 30-day attention value band: $3,330.89–$5,620.88
Surface mix:
SurfaceSignalsShare
yandex5063.3%
youtube2531.6%
baidu22.5%
seo_spam22.5%
Executive framing:
yandex is currently capturing 63.3% of measured weekly discovery activity. Cycle state: Acceleration. Median 72-hour velocity: 48.00. Interpretation confidence: Good confidence. Discovery is overly dependent on yandex, which increases fragility. Share-driven episode pickup is likely before broader platform conversion stabilizes.
Why this matters:
For podcasts, distribution is usually uneven early. A strong lead surface often reveals which topic angle is actually carrying listener acquisition.
Next likely outcome:
Share-driven episode pickup is likely before broader platform conversion stabilizes.
Signal quality notes:
  • Dominant signal types: mirror, unknown
Recommended interventions:
  1. Protect the lead surface first: publish one native-format asset for yandex within 24–48 hours.
  2. Route paid and organic traffic into one owned conversion path instead of splitting attention across weak destinations.
  3. Do not over-diversify yet. Concentrate around the current lead surface while discovery is still coherent.
  4. Use topic-led clip packaging and one clear listen CTA to convert conversation into episode starts.
  5. Treat this as an active intervention window, not a reporting window. Move in hours, not next week.

#2 — "Aftermath: Hunt for the Anthrax Killer - 2026 Podcast" - Jeremiah Crowell (Country: US)

  • Signals: 27
  • Primary discovery surface: youtube
  • Surface share: 88.9%
  • Cycle state: Acceleration
  • Interpretation confidence: Good confidence (73/100)
  • Estimated 30-day attention value band: $1,138.41–$1,921.06
Surface mix:
SurfaceSignalsShare
youtube2488.9%
seo_spam27.4%
apple_podcasts13.7%
Executive framing:
youtube is currently capturing 88.9% of measured weekly discovery activity. Cycle state: Acceleration. Median 72-hour velocity: 48.00. Interpretation confidence: Good confidence. Discovery is overly dependent on youtube, which increases fragility. Share-driven episode pickup is likely before broader platform conversion stabilizes.
Why this matters:
For podcasts, distribution is usually uneven early. A strong lead surface often reveals which topic angle is actually carrying listener acquisition.
Next likely outcome:
Share-driven episode pickup is likely before broader platform conversion stabilizes.
Signal quality notes:
  • Dominant signal types: mirror
Recommended interventions:
  1. Protect the lead surface first: publish one native-format asset for youtube within 24–48 hours.
  2. Route paid and organic traffic into one owned conversion path instead of splitting attention across weak destinations.
  3. Do not over-diversify yet. Concentrate around the current lead surface while discovery is still coherent.
  4. Use topic-led clip packaging and one clear listen CTA to convert conversation into episode starts.
  5. Treat this as an active intervention window, not a reporting window. Move in hours, not next week.

#3 — "Stalked - 2026 Podcast" - Hannah Mossman Moore and Carole Cadwalladr (Country: GB)

  • Signals: 28
  • Primary discovery surface: youtube
  • Surface share: 89.3%
  • Cycle state: Acceleration
  • Interpretation confidence: Good confidence (73/100)
  • Estimated 30-day attention value band: $1,180.57–$1,992.21
Surface mix:
SurfaceSignalsShare
youtube2589.3%
seo_spam27.1%
apple_podcasts13.6%
Executive framing:
youtube is currently capturing 89.3% of measured weekly discovery activity. Cycle state: Acceleration. Median 72-hour velocity: 48.00. Interpretation confidence: Good confidence. Discovery is overly dependent on youtube, which increases fragility. Share-driven episode pickup is likely before broader platform conversion stabilizes.
Why this matters:
For podcasts, distribution is usually uneven early. A strong lead surface often reveals which topic angle is actually carrying listener acquisition.
Next likely outcome:
Share-driven episode pickup is likely before broader platform conversion stabilizes.
Signal quality notes:
  • Dominant signal types: mirror
Recommended interventions:
  1. Protect the lead surface first: publish one native-format asset for youtube within 24–48 hours.
  2. Route paid and organic traffic into one owned conversion path instead of splitting attention across weak destinations.
  3. Do not over-diversify yet. Concentrate around the current lead surface while discovery is still coherent.
  4. Use topic-led clip packaging and one clear listen CTA to convert conversation into episode starts.
  5. Treat this as an active intervention window, not a reporting window. Move in hours, not next week.

#4 — "Journey Through Time - Goalhanger - 2026 Podcast" - David Olusoga and Sarah Churchwell (Country: GB)

  • Signals: 26
  • Primary discovery surface: youtube
  • Surface share: 96.2%
  • Cycle state: Acceleration
  • Interpretation confidence: Good confidence (70/100)
  • Estimated 30-day attention value band: $1,096.24–$1,849.91
Surface mix:
SurfaceSignalsShare
youtube2596.2%
apple_podcasts13.8%
Executive framing:
youtube is currently capturing 96.2% of measured weekly discovery activity. Cycle state: Acceleration. Median 72-hour velocity: 48.00. Interpretation confidence: Good confidence. Discovery is overly dependent on youtube, which increases fragility. Share-driven episode pickup is likely before broader platform conversion stabilizes.
Why this matters:
For podcasts, distribution is usually uneven early. A strong lead surface often reveals which topic angle is actually carrying listener acquisition.
Next likely outcome:
Share-driven episode pickup is likely before broader platform conversion stabilizes.
Signal quality notes:
  • Dominant signal types: mirror
Recommended interventions:
  1. Protect the lead surface first: publish one native-format asset for youtube within 24–48 hours.
  2. Route paid and organic traffic into one owned conversion path instead of splitting attention across weak destinations.
  3. Do not over-diversify yet. Concentrate around the current lead surface while discovery is still coherent.
  4. Use topic-led clip packaging and one clear listen CTA to convert conversation into episode starts.
  5. Treat this as an active intervention window, not a reporting window. Move in hours, not next week.

#5 — "The American Cinematheque Podcast" (Country: US)

  • Signals: 15
  • Primary discovery surface: youtube
  • Surface share: 93.3%
  • Cycle state: Acceleration
  • Interpretation confidence: Measured confidence (67/100)
  • Estimated 30-day attention value band: $632.45–$1,067.26
Surface mix:
SurfaceSignalsShare
youtube1493.3%
web16.7%
Executive framing:
youtube is currently capturing 93.3% of measured weekly discovery activity. Cycle state: Acceleration. Median 72-hour velocity: 48.00. Interpretation confidence: Measured confidence. Discovery is overly dependent on youtube, which increases fragility. Share-driven episode pickup is likely before broader platform conversion stabilizes.
Why this matters:
For podcasts, distribution is usually uneven early. A strong lead surface often reveals which topic angle is actually carrying listener acquisition.
Next likely outcome:
Share-driven episode pickup is likely before broader platform conversion stabilizes.
Signal quality notes:
  • Dominant signal types: mirror
Recommended interventions:
  1. Protect the lead surface first: publish one native-format asset for youtube within 24–48 hours.
  2. Route paid and organic traffic into one owned conversion path instead of splitting attention across weak destinations.
  3. Do not over-diversify yet. Concentrate around the current lead surface while discovery is still coherent.
  4. Use topic-led clip packaging and one clear listen CTA to convert conversation into episode starts.
  5. Treat this as an active intervention window, not a reporting window. Move in hours, not next week.

Public, aggregated, anonymized. GXI is a directional market-intelligence index designed to support timing, routing, and growth decisions. It is not a legal conclusion.

RG Intel™ Research • Growth Expansion Index (v1)
2026-04-30