What it means
The role sits between the client, who supplies capital and objectives, and the market, where decisions are executed. A discretionary manager can trade without asking first, while an advisory manager must get the client's approval for each decision, and the difference matters enormously for speed and for accountability.
For a business, the practical relevance is that pension trustees, treasury committees and family shareholders all appoint these firms. Understanding what the manager is contractually obliged to do stops boards from being disappointed by results that were exactly what the mandate asked for.
A manager's day involves research, portfolio construction, dealing, risk monitoring and client reporting, supported by compliance staff who check that every trade stays inside the mandate. The individual named on the fund is rarely working alone; there is usually an analyst team and an investment committee behind the decisions.
Fees are typically an annual percentage of assets, sometimes with a performance element, and they matter far more over a decade than most clients assume. A one percentage point fee difference on a long-term portfolio compounds into a substantial gap even when the underlying decisions are identical.
The nuance is that titles are not standardised. Investment manager, portfolio manager, fund manager and asset manager are often used interchangeably, so the contract and the regulatory permissions tell you more about what a firm actually does than the label on the business card.
In practice
Real-world examples.
Example
A hospital charity appoints a discretionary manager for its $30,000,000 reserve with an income target of 3.5% a year to fund operating costs. The manager tilts the portfolio towards dividend-paying shares and corporate bonds, accepting slower capital growth in exchange for the reliable cash the charity needs.
Example
A technology founder with $9,000,000 from a share sale hires an advisory manager instead of a discretionary one because he wants to approve every trade. Two years later he switches to discretionary after missing a rebalancing window while travelling, which cost more than the fee difference.
Example
A corporate pension scheme replaces one investment manager with three specialists covering equities, credit and property. Governance costs rise, but trustees can now see which mandate is underperforming instead of receiving a single blended number that hides everything.
Formula
Calculation
Formula: Manager fee = portfolio value x all-in fee rate. Net return to client = gross return - fees. Net return % = (gross gain - fees) / portfolio value.
Worked example: a family trust places $5,000,000 with a discretionary investment manager whose all-in charge, including dealing and custody, is 1.1% a year. The portfolio returns 8.4% gross, which is $5,000,000 x 0.084 = $420,000.
Fees are $5,000,000 x 0.011 = $55,000. The trust keeps $420,000 - $55,000 = $365,000, which is $365,000 / $5,000,000 = 7.3% net.
For comparison, an index fund covering a similar market charges 0.2%, or $5,000,000 x 0.002 = $10,000. The active manager therefore costs $55,000 - $10,000 = $45,000 more every year, so the trustees need to believe the manager can add at least 0.9% a year of extra return simply to break even against the cheaper option.Case study
Seen in the real world.
Merrivale Trustees is a fictional entity created for this illustrative example. The trustees managed $5,000,000 for a family and had used the same investment manager for nine years at an all-in cost of 1.1% a year.
In the year under review the portfolio returned 8.4% gross, or $420,000, and fees of $55,000 reduced that to $365,000, a net 7.3%. When a new trustee compared this with a 0.2% index fund covering the same markets, the fee gap of $45,000 a year became the main agenda item.
The illustrative resolution was a split rather than a sacking. The trustees moved 60% of the portfolio into low-cost trackers and left the remaining 40% with the manager for the areas where they believed selection genuinely mattered, cutting the blended fee to roughly 0.56% while keeping the relationship.
Watch out
Common mistakes.
- Assuming a discretionary manager will call before making changes, when the whole point of discretion is that they act first and report afterwards.
- Reading the gross performance figure in a marketing document as though it is what the client would have received, since fees, dealing costs and tax all sit between the two.
- Appointing a manager without agreeing a benchmark, which leaves both sides arguing after the fact about whether a 5% return was good or poor.
Questions
People also ask.
Is an investment manager the same as a financial adviser?
No, an adviser plans around your whole financial position, while an investment manager runs a portfolio against a defined mandate.
Does the manager have to act in my interests?
Regulated managers generally owe fiduciary or equivalent duties of care and loyalty, though the exact standard depends on the jurisdiction and the type of licence they hold.
How much should I expect to pay?
Retail discretionary mandates commonly run from about 0.5% to 1.5% a year all in, with institutional mandates priced well below that because of scale.
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