ABOUT PORTFOLWRIGHT
We spent five years building rebalancing engines. Then we built one once.
In late 2021, Christina was leading quantitative portfolio operations at a Frankfurt asset manager when a German digital brokerage approached her team for help. The brokerage had around 40,000 accounts, offered three model portfolios, and needed to rebalance monthly. They had one exchange connector (Xetra), no lot selection logic, and a drift calculation that ignored the GBP-denominated positions entirely.
Three months later, her team had built: normalised connectivity to five exchanges, tax-aware lot selection for ISA and GIA accounts, threshold-based drift detection, and a simulation layer for cost estimation before execution. It worked. It was also something that every other European retail platform was building separately, starting from scratch, making the same mistakes at the same points.
Portfolwright launched in 2022 with the premise that rebalancing infrastructure is a utility, not a differentiator. Platforms should compete on their client experience, not on whether their drift calculation handles Euronext settlement calendars correctly. We built it once, properly, and made it available by API.
THE TEAM
Three people who have worked the problem from both sides
Christina Bauer
Co-founder & CEO
Eight years at two Frankfurt-based asset managers, most recently heading quantitative portfolio operations. Observed private wealth managers charging 80bps for mechanical rebalancing work that could run on a server. Built Portfolwright to deliver the same outcome at a fraction of the cost, through an API.
Marcus Feld
Co-founder & CTO
Previously led exchange connectivity engineering at a London-based retail brokerage. Has directly debugged fill confirmation failures on Xetra, LSE, and Euronext under market stress.
Lena Richter
Quantitative Analyst
Four years in quantitative research at a Frankfurt asset manager before joining Portfolwright. Designed the lot selection and drift calibration models. Writes most of the simulation and back-testing infrastructure.
HOW WE WORK
What we optimise for
Correctness before speed
A rebalancing engine that's fast but occasionally routes to the wrong exchange or miscalculates lot selection is worse than one that's slower and right. We measure correctness first.
Explainable decisions
Every rebalance plan includes a structured reasoning trail — why each position was bought or sold, which lot was selected and why, what the expected cost was before execution. Not just for compliance: for your own debugging.
Opinionated about Europe
We are not building a global product that treats European regulation as an add-on. MiFID II, PEA rules, Abgeltungsteuer, CAMT reporting — these are the spec, not edge cases. Platforms serving European clients deserve infrastructure built for their environment.
What we are not
Portfolwright is not a broker, not a robo-advisor, and not a custodian. We do not hold client assets, execute orders on your investors' behalf, or manage model portfolios. We are API infrastructure — the rebalancing logic layer that sits between your platform and the exchanges you already connect to. Your FCA or BaFin authorisation covers the regulated activity; our API handles the calculation and routing.
We're hiring
Looking for engineers and integration specialists who care deeply about financial infrastructure. Email us at [email protected]