CT.gov Black-Box Sponsor Repeaters
2026-03-29 | full-registry ct.gov audit | plots, figures, and e156 bundle
Series
IndustrySponsor-ClassPhaseStructural MissingnessEvidence VisibilityCompletion CohortCondition HiddennessSponsor ConcentrationRule-Era ReportingPublication UndercountOncology HiddennessCardiovascular HiddennessMetabolic HiddennessEnrollment-SizeGeography-ScaleDesign-PurposeCompletion-DelayTrial-ArchitectureIntervention-TypeCountry ReportingStopped-TrialOutcome-DensityActual-FieldUs-Versus-GlobalModality-SponsorCountry-ConditionDisease-GeographyCondition-SponsorCountry-SponsorUs-Versus-Ex-UsIndustry-FamilyRisk-Adjusted HiddennessOverdue Results ClockPublication Index GapProbable Act/Fdaaa DebtSponsor Excess WatchlistCountry Excess WatchlistCondition Excess WatchlistBlack-Box TrialsStrict-Proxy RepeatersSponsor GhostsCountry GhostsCondition GhostsBlack-Box SponsorsStrict Black-Box
Black-Box Sponsors Dashboard

Named black-box sponsor repeaters make the deepest visible CT.gov silence look much more industry-heavy

Boehringer Ingelheim holds the largest named black-box stock, GlaxoSmithKline and Pfizer remain close behind, Bayer is the sharper large-sponsor outlier on black-box rate, and the broader missing-results context stays large across the same repeaters.

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Black-box stock
Black-box rates
No-results stock
Named sponsors

Dashboard

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Boehringer Ingelheim leads the named black-box table, GlaxoSmithKline and Pfizer remain close behind, and Bayer is the sharper large-sponsor extreme on rate.

How to read the dashboard
Boehringer box
755
Largest stock
GSK box
579
Second stock
Pfizer box
539
Third stock
Bayer rate
48.1%
Large-sponsor rate
Top named-sponsor black-box stock
BLACK-BOX STOCKTop named-sponsor black-box study countsBoehringer755GlaxoSmithKline579Pfizer539Bayer462Novartis Pharmaceuticals430Hoffmann-La Roche417AstraZeneca409BMS392Sanofi340Novo Nordisk A/S297
Boehringer Ingelheim, GlaxoSmithKline, Pfizer, Bayer, and Novartis dominate the named black-box stock table.
The deepest-silence sponsor stock is concentrated in a short list of industry portfolios.
Large-sponsor black-box rate
BLACK-BOX RATEBlack-box rate among named sponsors with at least 100 older studiesMylan Pharmaceuticals Inc94.9%Abbott Nutrition67.6%Sandoz63.8%Galapagos NV63.3%Jiangsu HengRui Medicine Co., Ltd.59.0%Poitiers University Hospital57.9%University Hospital, Rouen55.5%Wyeth is now a wholly owned subsidiary of Pfizer54.1%Centre Hospitalier Universitaire Dijon53.6%Assistance Publique Hopitaux De Marseille49.8%
Bayer is the sharper large-sponsor rate outlier, even though Boehringer Ingelheim leads on absolute black-box stock.
Stock and rate point to overlapping but not identical sponsor risks.
Named-sponsor no-results stock
NO-RESULTS STOCKRaw missing-results counts among named black-box sponsor repeatersGlaxoSmithKline1,246AP-HP1,121Cairo U1,065Mayo1,022NCI963AstraZeneca864Riphah International University864Boehringer856Sanofi852Pfizer837
The black-box leaders also carry very large missing-results stock, which shows that the deepest silence sits inside a wider disclosure backlog.
That is why the black-box sponsor table works best as a severity overlay, not a standalone count table.
Read Across Projects

Across The Series

Each project isolates a different dimension of registry opacity, but the point is the contrast between them, not a single leaderboard.

Industry
Industry project

Industry project from the CT.gov hiddenness series.

Sponsor-Class
Sponsor-class project

Sponsor-class project from the CT.gov hiddenness series.

Phase
Phase project

Phase project from the CT.gov hiddenness series.

Structural Missingness
Structural missingness project

Structural missingness project from the CT.gov hiddenness series.

Evidence Visibility
Evidence visibility project

Evidence visibility project from the CT.gov hiddenness series.

Completion Cohort
Completion cohort project

Completion cohort project from the CT.gov hiddenness series.

Condition Hiddenness
Condition hiddenness project

Condition hiddenness project from the CT.gov hiddenness series.

Sponsor Concentration
Sponsor concentration project

Sponsor concentration project from the CT.gov hiddenness series.

Rule-Era Reporting
Rule-era reporting project

Rule-era reporting project from the CT.gov hiddenness series.

Publication Undercount
Publication undercount audit

Publication undercount audit from the CT.gov hiddenness series.

Oncology Hiddenness
Oncology hiddenness project

Oncology hiddenness project from the CT.gov hiddenness series.

Cardiovascular Hiddenness
Cardiovascular hiddenness project

Cardiovascular hiddenness project from the CT.gov hiddenness series.

Metabolic Hiddenness
Metabolic hiddenness project

Metabolic hiddenness project from the CT.gov hiddenness series.

Enrollment-Size
Enrollment-size project

Enrollment-size project from the CT.gov hiddenness series.

Geography-Scale
Geography-scale project

Geography-scale project from the CT.gov hiddenness series.

Design-Purpose
Design-purpose project

Design-purpose project from the CT.gov hiddenness series.

Completion-Delay
Completion-delay project

Completion-delay project from the CT.gov hiddenness series.

Trial-Architecture
Trial-architecture project

Trial-architecture project from the CT.gov hiddenness series.

Intervention-Type
Intervention-type project

Intervention-type project from the CT.gov hiddenness series.

Country Reporting
Country reporting project

Country reporting project from the CT.gov hiddenness series.

Stopped-Trial
Stopped-trial project

Stopped-trial project from the CT.gov hiddenness series.

Outcome-Density
Outcome-density project

Outcome-density project from the CT.gov hiddenness series.

Actual-Field
Actual-field project

Actual-field project from the CT.gov hiddenness series.

Us-Versus-Global
US-versus-global project

US-versus-global project from the CT.gov hiddenness series.

Modality-Sponsor
Modality-sponsor project

Modality-sponsor project from the CT.gov hiddenness series.

Country-Condition
Country-condition project

Country-condition project from the CT.gov hiddenness series.

Disease-Geography
Disease-geography project

Disease-geography project from the CT.gov hiddenness series.

Condition-Sponsor
Condition-sponsor project

Condition-sponsor project from the CT.gov hiddenness series.

Country-Sponsor
Country-sponsor project

Country-sponsor project from the CT.gov hiddenness series.

Us-Versus-Ex-Us
US-versus-ex-US project

US-versus-ex-US project from the CT.gov hiddenness series.

Industry-Family
Industry-family project

Industry-family project from the CT.gov hiddenness series.

Risk-Adjusted Hiddenness
Risk-adjusted hiddenness

Risk-adjusted hiddenness from the CT.gov hiddenness series.

Overdue Results Clock
Overdue results clock

Overdue results clock from the CT.gov hiddenness series.

Publication Index Gap
Publication index gap

Publication index gap from the CT.gov hiddenness series.

Probable Act/Fdaaa Debt
Probable ACT/FDAAA debt

Probable ACT/FDAAA debt from the CT.gov hiddenness series.

Sponsor Excess Watchlist
Sponsor excess watchlist

Sponsor excess watchlist from the CT.gov hiddenness series.

Country Excess Watchlist
Country excess watchlist

Country excess watchlist from the CT.gov hiddenness series.

Condition Excess Watchlist
Condition excess watchlist

Condition excess watchlist from the CT.gov hiddenness series.

Black-Box Trials
Black-box trials

Black-box trials from the CT.gov hiddenness series.

Strict-Proxy Repeaters
Strict-proxy repeaters

Strict-proxy repeaters from the CT.gov hiddenness series.

Sponsor Ghosts
CT.gov Sponsor Ghost Repeaters

Named-sponsor ghost-protocol watchlist showing which sponsors remain most ghosted above expectation.

Country Ghosts
CT.gov Country Ghost Watchlist

Country-linked ghost watchlist showing where deeper silence remains most elevated above expectation.

Condition Ghosts
CT.gov Condition Ghost Watchlist

Condition-family ghost watchlist showing which therapeutic portfolios are ghosted well above expectation.

Strict Black-Box
CT.gov Strict-Core Black-Box

Strict U.S.-nexus black-box tables showing where the regulated-looking deep-silence core still concentrates.

Source on GitHub | Project home | Dashboard