Every European fund product starts with a buyer question. Is the person on the other side of the subscription form an ordinary saver, or a professional? The answer decides the wrapper you can offer, the ticket you can demand, the documents you must hand over, and whether a passport will carry the product into another member state.
This matters because regulation is not only about the fund; it is also about the audience. A product suitable for a bank treasury or pension scheme may be too complex, illiquid, or lightly disclosed for a household saver.
The same sponsor usually runs both kinds of product on one Dublin administrator. Atlantic Horizon UCITS ICAV is the Irish retail wrapper: anyone in the Union may subscribe, there is no European minimum cheque, and the document set is a prospectus plus a KIID. Atlantic Horizon Cayman Fund is the professional sleeve: same house, same strategy family, a high-ticket offering memorandum, and no UCITS passport. Mixing the two buyers is how a desk either locks a household out of a product they were entitled to buy, or puts a Cayman line on a retail register that was never allowed to hold it.
A retail client is anyone who is not professional. Households, small companies, and most private wealth sit here. They get the full conduct and product-disclosure stack, and they may buy a UCITS with no European minimum cheque. For Atlantic Horizon that means a €1,000 savings-plan debit can buy the ICAV; it cannot buy the Cayman fund.
A professional client is one of the institutions on the MiFID per-se list: credit institutions, investment managers, insurers, funds and their managers, pension schemes and their managers, national governments and public debt managers, and the likes of the IMF, the ECB and the EIB. Those buyers are assumed to know the product. A professional-only fund can drop retail protections that would otherwise be mandatory.
Classification is a transfer-agency job before it is a marketing job. The Dublin administrator that keeps Atlantic Horizon’s Irish register has to record the buyer type on the way in, because an Irish UCITS cannot outsource the shareholder register. A distributor’s email saying “they are professional” is not a classification. The form, the evidence, and the register line are.
Get the field wrong and you have a product breach, not a paperwork miss. A QIAIF or Cayman share allotted to a retail saver is a sale that should not have happened. A UCITS refused to a household because someone copied a €100,000 ticket from a professional term sheet is the opposite error: the ICAV was built for that person.