Stonys
Intelligence
Invitation Only

The charter market forgets. We don’t.

Independent market intelligence for superyacht charter: every published rate dated, sourced, and re-verified daily.

See What We Observe
300+
Verified vessel dossiers
16,500+
Dated rate observations
124.9
Charter Index · 2019 = 100
18+ yrs
Deepest dated rate history
290+
Rated for dispersion
20152019202020222023202420252026€200k€400kONE HULL · EVERY DATED EUR RATE HELD · 11-YEAR SPAN · 48 OBSERVATIONS
One 70m-class motor yacht: every dated EUR rate this desk holds on her, 2015 to 2026. Hollow points are archive recoveries; solid points are live captures. This is what not forgetting looks like.
Membership is limited by region and segment to preserve signal integrity
The Record

The daily record and the historical record.

Every reachable published rate card in the corpus is re-fetched, identity-verified, and compared against the prior reading, daily. Changes are recorded as dated events: a revision, a currency shift, a card withdrawn, a change of mandate. Detection typically occurs within 24 hours. Coverage is stamped on every run, including pages that could not be reached.

18+ YRS OF DATED RATE HISTORY 2008 2016 Today Trade-record and news-desk recoveries, dated and sourced Web-archive re-captures of the cards, under every prior name Daily monitor, every reachable card, coverage stamped 23.07.202621.08.202645+ CHANGE EVENTS · VERIFIED CLASSES: WITHDRAWALS & IDENTITY

The historical record runs deeper than any single archive. Dated recoveries from contemporaneous trade records and news desks extend the deepest individual vessel histories to 2008. Web-archive re-captures of the rate cards themselves, recovered under every name a hull has carried, reach 2016. 300+ of the corpus's observations are archive recoveries. Each carries its source and date. In total, 16,500+ dated rate observations stand in the record.

Two records, one ledger: current movement read against a decade of context.

Who We Serve

Built for the people who run this market.

Charter Brokers
Defend every rate with evidence.

Verified comparables, a clear read on which figure is live and which is a relic, and the patterns that precede a reprice.

Owners & Representatives
Know where your yacht truly stands.

Her true position against her genuine peer group, with the evidence to reprice or hold. Identities never published.

Management Companies & Fleets
See the whole board at once.

Fleet-wide benchmarking, early signal on softening rates, and the record to show the advice was right.

Insurers, Financiers & Family Offices
The asset record, kept properly.

Registry-bound identity, refit lineage, and dated, citable market context for decisions that outlive a season.

The Stonys Charter Index

Current reading: 124.9 against a 2019 base.

Published asking rates have risen approximately 25% over seven seasons. Corpus-derived, anonymised, recomputed with every change to the record.

20192020202120222023202420252026100124.9SAME HULL · SAME PLATFORM · SAME CURRENCY · 95% BAND

The Index admits only same-hull, same-platform, same-currency observation pairs; composition drift, currency effects, and imputation are excluded by construction. The full methodology, from minimum-pair thresholds to cross-checks against independent index families, is published to members and open to review.

From the Corpus

Exhibits from recently published intelligence, drawn from the 290+ rated vessels within a corpus of 300+ verified vessel dossiers. Each is built from dated, attributed observations. The full exhibit set, with drift studies, structural findings, and vessel-level rate histories, is published inside the Terminal.

Drift I · Charter · Upward

Boadicea · a mandate changes, a rate resets.

€725k €645k CENTRAL AGENT CHANGES · MID-2025 €645,000 €725,000 one platform still shows ~€100k under +12.4% · THE RESET FOLLOWS THE MANDATE, NOT THE SEASON €725k €645k CENTRAL AGENT CHANGES · MID-2025 €645,000 €725,000 one platform still ~€100k under +12.4% THE RESET FOLLOWS THE MANDATE, NOT THE SEASON

A 1999-built 76m whose advertised rate stepped from €645,000 to €725,000, a rise of 12.4%, around a documented change of central agent in mid-2025. Across the corpus this is a recurring pattern: a mandate transition reliably precedes a rate reset. Meanwhile a stale card roughly €100,000 under the live rate kept circulating. Both facts are dated observations in the archive.

Read · mandate transition76.6mIssue V2-0037Houses anonymised
Structure V · Dispersion, Measured

One vessel. How many prices?

under 5% apart 655-10% apart 3310-20% apart 7220-35% apart 35more than 35% apart 26 MEDIAN GAP €44,000 · ONE VESSEL IN TEN EXCEEDS €200,000 SPREAD BETWEEN LIVE PUBLISHED FIGURES · SAME VESSEL · VESSELS WITH ≥2 FIGURES IN CIRCULATION

Across the rated corpus, the median spread between the lowest and highest live figure for the same hull runs 14% apart.

under 5% apart 65 5-10% apart 33 10-20% apart 72 20-35% apart 35 more than 35% apart 26 MEDIAN GAP €44,000 · ONE IN TEN EXCEEDS €200,000 LIVE PUBLISHED FIGURES · SAME VESSEL · ≥2 IN CIRCULATION

Within the verified corpus of 300+ dossiers, 290+ vessels carry two or more live published charter figures at once. For those vessels the figures sit a median €43,090 apart, with 64% exceeding the €10,000 materiality line. The causes are structural: currency handling, stale trails left by repricing, seasonal cards republished as single numbers, and figures copied between platforms at different dates. Sale asking prices are excluded; the comparison is published charter from-rates only. This is the noise every negotiation happens inside, and the spread that verification resolves into a single controlling figure per vessel.

Computed across the verified corpus300+ corpus · 290+ with multiple live figures · aggregated & anonymised22.08.2026
Drift VII · Zero Drift

A rate that never moved.

USD 1,500,000 · published 03.10.2018 unchanged · Jul 2026 ZERO DRIFT · SEVEN YEARS, NINE MONTHS 2018 2026 USD 1,500,000 published 03.10.2018 unchanged · Jul 2026 2018 2026 ZERO DRIFT · SEVEN YEARS, NINE MONTHS

A 92-metre flagship whose advertised rate has not moved in nearly eight years, recovered from dated archives and held as a longitudinal series. Stability is a finding too, and only an archive can prove it. Most of the market cannot tell you whether a rate is firm or merely forgotten. We can.

Read · stability · provable only by archive92m flagshipIssue V2-0159
Drift III · Charter · Downward

Seawolf X · a launch reprices.

€440k €260k €420k Jun 2024 (launch) €380k Oct 2024 €280k Now (Jul 2026) −33% · −€140k

A 2024 delivery shed a third of its advertised rate in dated steps, each captured as it happened.

€440k €260k €420k Jun 2024 launch €380k Oct 2024 €280k Now Jul 2026 −33% · −€140k
Read · launch price discovery42.84m catamaranIssue V2-0039
Drift V · Sale · Downward

O’Ptasia · the asking falls while the charter book works.

€90M €82.5M €90,000,000 €82,500,000 −€7.5M asking SAME PERIOD · 139 CHARTER DAYS · ≈€17.9M GROSS · TOP CHARTER AWARD asking price and charter yield are moving on different logics. The drift is not distress

The asking price fell €7.5M while 139 recorded charter days worked underneath it: both sides of one mandate, held in one record.

€90M €82.5M €90,000,000 €82,500,000 −€7.5M asking SAME PERIOD · 139 CHARTER DAYS ≈€17.9M GROSS · TOP CHARTER AWARD asking price and charter yield are moving on different logics. The drift is not distress
Read · asking & yield decoupled85m flagshipIssue V2-0044
Structure VI · The Longitudinal Record

One hull. A decade, witnessed.

2017201820192020202120222023202420252026$500k$600k$700k$650k today$495k · 2017, recovered from a dated archive

One hull, ten years of dated rates that no participant ever published together.

20172019202120232025$500k$600k$700k
USD series · single platform · asking, never achieved2017 to 2026archive points ringed
Structure · Mandate

The controlling agent is the low anchor.

The mandate holder publishes the lowest figure on 44% of this market. The cheapest week is, more often than not, the official one.

The Discipline

Published means provable.

Membership

By application only.