Risk grade updatedRisk gradeEvidence verified
17 Oct 2026 · BUSINESS.fi / Opterom LuottoluokitusAutomatic grade A3.Business profile
Stronzo Holding Oy
Stronzo Holding Oy's registered office is Helsingfors. It is a limited company. The company was established on 2019-05-13. It operates in the industry of activities of holding companies. In its latest retained statement for 2025-11-30, revenue was €78,000 and operating profit was €2,085.
Business ID 2999357-9ValidUnclaimed company profile
Trusted core data
Public company details from the trade register.
- Business ID
- 2999357-9
- Sector
- Activities of holding companies
- Municipality
- Helsingfors
- Company form
- Limited company
- Registration date
- 2019-05-13
- Business ID registration date
- 2019-05-08
- Business status
- Valid
- Profile ownership
- Unclaimed company profile
Contact and location summary
Visiting address: Myllytie 2 B 7, 00140, Helsingfors
Phone: +358440301901Source observation
Email: [email protected]Source observation
People and decision-makers
Bertamini LucaToimitusjohtaja
About Stronzo Holding Oy
Financial position and key figures for the company.
Stronzo Holding Oy's location municipality is Helsingfors. It is a limited company. The company was established on 2019-05-13. It operates in the industry of activities of holding companies. In its latest retained statement for 2025-11-30, revenue was €78,000 and operating profit was €2,085. The latest retained financial statement for 2025-11-30 shows revenue of €78,000 and profit for the financial year of €76,081. Based on the latest retained statement, revenue growth was +0.0%, operating margin was +2.7%, and equity ratio was +76.3%.
Financial highlights
Key figures from the latest financial period.
Latest financial period
2025-11-30
3
2
Combined source
Derived indicators
Revenue growth0.0%
Operating margin2.7%
Equity ratio76.3%
Balance-sheet contextLatest financial period
Cash and bank€78,243Previous: €68,140
Retained earnings€376,446Previous: €309,479
Profit before taxes€77,661Previous: €98,809
Equity€455,027Previous: €410,586
Liabilities€141,012Previous: €3,086
Current assets€139,390Previous: €113,606
Current liabilities€34,612Previous: €3,086
Employees1Previous: 1
Revenue trend5 periods
€26,250
2021-11-30
€68,250
2022-11-30
€71,250
2023-11-30
€78,000
2024-11-30
€78,000
2025-11-30
Operating profit (loss) trend5 periods
€25,264
2021-11-30
€46,772
2022-11-30
€30,178
2023-11-30
-€436
2024-11-30
€2,085
2025-11-30
Profit (loss) for the financial year trend5 periods
€62,908
2021-11-30
€36,539
2022-11-30
€137,874
2023-11-30
€98,608
2024-11-30
€76,081
2025-11-30
Assets trend5 periods
€232,914
2021-11-30
€268,759
2022-11-30
€364,562
2023-11-30
€413,672
2024-11-30
€596,039
2025-11-30
Financial ratios
Financial ratios based on financial statement data. Source: Yhdistetty lähde.
Equity ratioGood
95/100 · Declining
Current ratioGood
75/100 · Declining
Operating profit marginPassable
57/100 · Improving
Ratio history
| Ratio | 2021-11-30 | 2022-11-30 | 2023-11-30 | 2024-11-30 | 2025-11-30 |
|---|---|---|---|---|---|
| Equity ratio | 78.2 % | 81.3 % | 93.0 % | 99.3 % | 76.3 % |
| Current ratio | - | - | - | 22.08x | 2.26x |
| Operating profit margin | 96.2 % | 68.5 % | 42.4 % | -0.6 % | 2.7 % |
Registry status and identifiers
Current registry information and identifiers based on YTJ data.
YTJ statusValid
Trade RegisterRegistered
Business ID2999357-9
VAT IDFI29993579
EU IDFIFPRO.2999357-9
MunicipalityHelsingfors
Current registered entries
2019-05-08Registered in Tax Administration (Prepayment Register)
2019-05-13Registered in Tax Administration (Tax Administration)
2019-05-13Registered in Patent and Registration Office (Trade Register)
2021-08-01VAT-liable for business activity in Tax Administration (VAT Register)
Responsible people
Public role relationships materialized from source observations.
Bertamini LucaToimitusjohtajaSources: 5 · Confidence: 78%
Bertamini LucaPuheenjohtajaSources: 3 · Confidence: 78%
Karlsson Karl Markus JoachimVarsinainen jäsenSources: 4 · Confidence: 78%
Bertamini JacopoVarajäsenSources: 2 · Confidence: 78%
Risk certificate
An open-data based company stability and risk signal.
BUSINESS.fi
BUSINESS.fi Luottoluokitus
Profile-specific risk signal based on open data
Automatic gradeNot a credit decision
A3
GoodStronzo Holding Oy
Grade unchangedA3 · new analysis 2026-10-17
78/100
High
Strong financial evidenceFinancial data included
Financial development has been volatile across multiple domains.
4 comparable periodsRevenueStable
ProfitabilityVolatile
SolvencyVolatile
Same industry, size and age groupDescriptive comparison – does not change the model score.
52 peersSolvency48%
Close to the peer-group midpoint
Profitability60%
Better than 60% of peers
Liquidity62%
Better than 62% of peers
Revenue growth64%
Better than 64% of peers
RegularBased on observed PRH financial period end and registration dates. This descriptive evidence does not change the v0.14 score.
3 observed filings135 days after period end
135 days after period end
3 consecutive periods
Supporting factors
- Strong equity ratio
- Healthy short-term liquidity
- Company context reduces the weight of an isolated financial signal
Risk factors to note
- Material volatility across multiple financial domains
Automatic assessment developmentChanges are derived from evidence differences between persisted automatic assessments.
5 assessmentsA3
2026-10-1778/100 · v0.15
A3 → A3- Profitability: Improving → Volatile
- Solvency: Deteriorating → Volatile
- New risk factor: Material volatility across multiple financial domains.
A3
2026-09-19 03:2778/100 · v0.14
B1 → A3 · +9 points- Evidence strengthened: a PRH/XBRL financial statement was added to the assessment (2025-11-30).
- Assessment confidence: Medium → High.
- Evidence quality: Registry and statistical evidence → Strong financial evidence.
B1
2026-09-1469/100 · v0.14
B1 → B1B1
2026-09-1469/100 · v0.13
Oldest retained automatic assessment in this comparisonA3
2026-10-17
open-risk-grade-v0.15
The grade can use open digital financial statement data together with registry signals.
Risk context
When sufficient source-backed financial metrics are not available for a Tier 1 assessment, BUSINESS.fi shows registry, industry, and regional context.
Industry risklow
80/100
Industry context is low based on normalized open statistical inputs.
Age and continuityHyvä
60/100
The company has about 7 years of registry continuity.
Registry and status signalsSeurattava
64/100
Registry history, filing recency, and active register markings are still limited or mixed.
Events & news
Verified events and sourced external company news in one timeline.
Risk grade updatedRisk gradeEvidence verified
19 Sept 2026 · BUSINESS.fi / Opterom LuottoluokitusAutomatic grade B1 → A3.Risk grade updatedRisk gradeEvidence verified
14 Sept 2026 · BUSINESS.fi / Opterom LuottoluokitusAutomatic grade B1.Registry timeline
Trade register notifications shown on a timeline.
11 register eventsLatest event: 2026-04-14
Financial statements availability
Available financial statement periods and PRH source filings.
3 financial statement periodsLatest financial period: 2025-11-30
Profile source and ownership
Profile based on public registry data
BUSINESS.fi has created this profile from public company information. Source data updated 2025-12-31.
This company profile has not been claimed yet
Stronzo Holding Oy shows public core facts. A company representative can claim the profile, update public information, and access owner tools.