MAISNER is a quantitative analytics platform — it provides mathematical decision-support tools, not investment advice and not a regulated financial service. By accessing the platform you confirm that you have sufficient knowledge and experience of financial markets and portfolio management to independently evaluate its outputs, and that you agree to these Terms.
What MAISNER Stands Behind
Our quantitative engines are independently validated across 779 tests covering 36 modules — Markowitz+RMT optimisation, PRIIPs block bootstrap, GBM barrier probabilities, Paleologo stop-loss construction, Yu & Sun hedging simulation, and more. Every formula is verified against independent Python reference implementations with no shared code paths. The complete validation report is published at /validation.
We stand behind the mathematical correctness of every computation this platform produces. What no analytical software can control is the behaviour of markets, the accuracy of third-party data providers, or the investment outcomes of decisions made using our outputs. The sections below define that boundary precisely.
1. Platform Standards & Availability
MAISNER is developed and maintained to professional software standards, with documented uptime monitoring, security audits, and ongoing analytical validation. As with all software-as-a-service platforms, access is provided "as available" — we cannot guarantee uninterrupted service or that every feature will suit every specific use case.
- All outputs (weights, metrics, scenarios, reports) are mathematical computations derived from historical data and declared model assumptions. They reflect the model, not a guarantee of market behaviour.
- Features and pricing may evolve; material changes will be communicated in advance.
- Access may be suspended for breach of these Terms or for security reasons.
2. Our Role: Decision-Support, Not Advice
Nothing MAISNER produces constitutes investment advice, portfolio management, or any regulated financial service — regardless of who is using it or how outputs are applied. In keeping with MiFID II (Directive 2014/65/EU) and applicable regulation, the analytical work is ours; the investment decision, suitability assessment, and any fiduciary duty remain entirely yours.
- The operator is not a licensed investment advisor, portfolio manager, broker-dealer, or PRIIP manufacturer.
- Optimised portfolios, factor scores, stress scenarios, and risk metrics are quantitative outputs — your own judgement determines how they are applied.
- Historical backtests and Monte Carlo simulations illustrate model behaviour under past and simulated conditions; they are not forecasts of future performance.
- PRIIPs KID drafts are analytical tools to support the responsible PRIIP manufacturer. Final KIDs must be reviewed, validated, and issued by that manufacturer under applicable regulation.
If you manage assets on behalf of others, you are solely responsible for compliance with all regulations governing your advisory, management, or trading activities.
3. Who This Platform Is For
MAISNER is designed for two groups of users:
- Licensed financial professionals — independent wealth managers, RIAs, family offices, fund managers, and similar practitioners who use quantitative tools as part of their professional practice (all plans).
- Knowledgeable self-directed investors — individuals with meaningful experience in financial markets who understand the tools they are using: portfolio optimisation, risk metrics, factor analysis, stress testing, and backtesting, and who apply these tools to their own portfolios (Starter plan).
By accessing the platform you represent and warrant that:
- You have sufficient knowledge, experience, and understanding of financial markets and quantitative methods to evaluate and independently apply the platform's outputs.
- You understand that all outputs are mathematical models derived from historical data and declared assumptions — they are not guarantees or forecasts of future returns.
- If you manage assets on behalf of others, you are duly authorised and comply with all applicable regulations.
- If you are accessing on behalf of an entity, you have authority to bind that entity to these Terms.
MAISNER is not appropriate for persons with no financial market experience who are seeking investment recommendations rather than quantitative tools.
4. Limitation of Liability
To the maximum extent permitted by applicable law:
- The operator shall not be liable for any direct, indirect, incidental, special, consequential, punitive, or exemplary damages arising from your use of or reliance on the platform, including but not limited to: investment losses, trading losses, lost profits, lost data, business interruption, or reputational damage.
- The operator shall not be liable for any damages arising from inaccuracies in market data sourced from third-party providers, model errors, data outages, or system failures.
- Where liability cannot be fully excluded by law, the operator's total aggregate liability for all claims arising under or in connection with these Terms is limited to the subscription fees actually paid by the user in the twelve (12) months immediately preceding the claim.
- The operator shall not be liable for any claim brought more than twelve (12) months after the event giving rise to the claim first occurred.
5. Indemnification
You agree to indemnify, defend, and hold harmless the operator and its affiliates, officers, and agents from and against any claims, liabilities, losses, damages, costs, and expenses (including reasonable legal fees) arising out of or related to: (i) your use of the platform; (ii) your violation of these Terms; (iii) any investment decision you make based on platform outputs; (iv) your violation of any applicable law or regulation; or (v) any third-party claim arising from your use of the platform.
6. Data Accuracy & Third-Party Data Sources
Market data is sourced from third-party providers (Financial Modeling Prep, Polygon.io, Yahoo Finance). The operator does not control, verify, or guarantee the accuracy, completeness, timeliness, or fitness for purpose of any third-party data.
- Data may be delayed, stale, incorrect, or missing for certain securities or time periods.
- Fundamental data reflects provider-reported values and may differ from official regulatory filings.
- EU, emerging market, and non-US ticker coverage may be incomplete.
- The operator accepts no liability for any loss caused by erroneous third-party data.
7. Acceptable Use
You agree not to: (i) use the platform for any unlawful purpose or in violation of any applicable regulation; (ii) share, sublicense, or resell access to any third party; (iii) attempt to reverse-engineer, decompile, or extract the platform's source code, algorithms, or models; (iv) use automated means to scrape, harvest, or extract data from the platform; (v) attempt to circumvent security controls or access accounts other than your own; (vi) use outputs to create competing products without written permission.
8. Subscription, Payment & Cancellation
Subscriptions are billed monthly or annually in advance. All fees are exclusive of applicable taxes (including VAT). Fees are non-refundable except where required by mandatory applicable law. You may cancel at any time; cancellation takes effect at the end of the current billing period. The operator reserves the right to modify pricing with thirty (30) days' notice. Continued use after a price change constitutes acceptance of the new pricing.
9. Data Protection (GDPR)
The operator processes personal data as data controller in accordance with Regulation (EU) 2016/679 (GDPR). The legal basis for processing is performance of contract (Art. 6(1)(b) GDPR) — processing is necessary to provide the platform services you have subscribed to. Where processing goes beyond contract performance (e.g. security logging, fraud prevention), the legal basis is the operator's legitimate interests (Art. 6(1)(f) GDPR).
Data collected: account credentials (name, email address, bcrypt-hashed password), session tokens, usage logs (actions, timestamps, IP addresses), and portfolio data you voluntarily upload. No special-category data (Art. 9 GDPR) is collected or required.
Your rights under GDPR (Arts. 15–21): You have the right to access, rectification, erasure, restriction of processing, data portability (Art. 20 — receive your data in a structured, machine-readable format), and to object to processing based on legitimate interests. To exercise any right, contact maisnerplatform@gmail.com. Requests will be handled within 30 days.
Supervisory authority: You have the right to lodge a complaint with the Belgian Data Protection Authority (Autorité de protection des données / Gegevensbeschermingsautoriteit) at dataprotectionauthority.be or any competent supervisory authority in your EU member state of habitual residence.
Personal data is not sold, rented, or disclosed to third parties except where required by law or strictly necessary for service delivery (e.g. hosting infrastructure). Data is retained for the duration of the subscription plus a maximum of 24 months thereafter, unless earlier deletion is requested.
10. Intellectual Property & Output Ownership
The platform's underlying software, algorithms, quantitative models, source code, and trademarks are the exclusive intellectual property of the operator and are protected by applicable IP law. No licence to copy, adapt, or redistribute any part of the platform is granted except as expressly stated in these Terms.
Outputs generated by the platform (optimized portfolio weights, risk metrics, scenario results, factor scores, PDF reports, PRIIPs KID drafts, and any other analytical outputs) belong to the user who generated them. The operator asserts no ownership over user-generated outputs.
User data (portfolios, ticker lists, constraint settings) remains the property of the user at all times. The operator processes this data solely to deliver the contracted service and does not use it for any other purpose, including model training or benchmarking, without explicit written consent.
11. Data Processing Agreement (DPA — Art. 28 GDPR)
Where a user (e.g. a wealth manager, RIA, or family office) inputs personal data relating to their own clients or third parties into the platform, the user acts as data controller and the operator acts as data processor within the meaning of Art. 4(8) and Art. 28 GDPR.
In this capacity, the operator: (i) processes such data only on documented instructions from the controller; (ii) ensures persons authorised to process the data are bound by confidentiality; (iii) implements appropriate technical and organisational security measures (Art. 32 GDPR); (iv) assists the controller in fulfilling data subject rights requests; (v) does not engage sub-processors without prior written authorisation; (vi) deletes or returns all personal data upon termination of services.
Enterprise and Professional subscribers who process client personal data must execute a formal DPA before doing so. A standard DPA is available upon request by emailing maisnerplatform@gmail.com. Failure to execute a DPA does not relieve the controller of its GDPR obligations; it is the user's responsibility to ensure a compliant processing relationship is in place before uploading any client personal data.
12. Governing Law & Jurisdiction
These Terms are governed by and construed in accordance with the laws of Belgium, without regard to its conflict of law provisions. Any dispute arising out of or in connection with these Terms shall be submitted to the exclusive jurisdiction of the competent courts of Brussels, Belgium. Notwithstanding the foregoing, the operator reserves the right to seek injunctive or other equitable relief in any court of competent jurisdiction.
13. Changes to These Terms
The operator reserves the right to modify these Terms at any time. Material changes will be communicated via the platform or by email. Continued use of the platform after the effective date of any modification constitutes acceptance of the revised Terms. If you do not agree to the revised Terms, you must discontinue use.
14. Severability & Entire Agreement
If any provision of these Terms is found to be unenforceable, the remaining provisions shall continue in full force and effect. These Terms constitute the entire agreement between you and the operator regarding the subject matter hereof and supersede all prior agreements, representations, and understandings.
