The Margin Call: What Happens When the Portfolio Falls

Every description of Lombard lending leads with the pleasant part: liquidity without selling, the portfolio still invested, the strategy intact. All of that is true. It is also only half of the contract. The other half is the margin call, and it is the clause borrowers read fastest and understand least, usually because nobody presenting the facility is eager to dwell on it.

This article dwells on it. Not because the risk is a reason to avoid Lombard credit, but because the borrowers who get into trouble are almost never the ones who understood the mechanism and sized for it. They are the ones who treated the maximum available as the correct amount to borrow. The difference between a margin call that is an administrative event and one that dismantles a portfolio is decided long before markets fall, at the moment the facility is sized.

What a margin call actually is

A Lombard loan is secured by a portfolio of financial assets. The bank does not lend against the full market value: it applies an advance rate, a discount that reflects the quality, liquidity and composition of the collateral, and lends up to that reduced figure. The gap between the portfolio’s value and the loan is the bank’s protection. As long as that gap holds, nothing happens, and for most borrowers in most years nothing ever does. The facility sits quietly in the background, interest is paid, and the arrangement feels indistinguishable from a loan with no conditions attached. That impression is accurate right up to the moment it is not.

Markets move, so the gap moves with them. The bank revalues the pledged portfolio continuously, or at intervals defined in the contract, and compares the outstanding loan against the collateral value after the discount. When the portfolio falls far enough that the agreed coverage is breached, the contract obliges the bank to act. That action is the margin call: a formal demand that the borrower restore the ratio between debt and collateral.

It is worth being precise about what this is not. It is not a penalty, not a change of heart by the bank, and not an invitation to renegotiate. It is the mechanical execution of a clause both parties signed. Banks do not exercise discretion in the borrower’s favour when collateral coverage breaks, because the coverage is the loan’s entire security. Expecting flexibility at that moment is the first misunderstanding.

The second misunderstanding is about timing. A margin call arrives when markets have fallen, which means it arrives at exactly the moment the borrower’s other resources are likely to be under pressure as well. The clause is easiest to satisfy in the conditions under which it will never be invoked. That asymmetry is the heart of the risk, and it is why the response has to be designed in advance rather than improvised on the day the demand lands.

The three ways it resolves

When the demand arrives, the borrower has, in essence, three options. The first is to restore coverage by adding collateral: transferring cash or additional eligible securities into the pledged account until the ratio is repaired. This is the clean outcome, and it is only available to borrowers who kept liquid reserves outside the pledged structure, precisely so that they would exist on this day. It sounds obvious stated that way. It is nonetheless the step most commonly skipped, because holding liquidity in reserve feels wasteful in all the years when nothing happens.

The second is to reduce the loan: repaying part of the outstanding balance so that the smaller debt fits inside the smaller collateral value. This also works, and it also depends on resources held outside the portfolio. The first two options share a premise worth stating plainly: the facility was never the borrower’s last liquidity, only the borrower’s most convenient liquidity. When that premise fails, only the third option remains.

The third option is the one the contract reserves for the bank if the borrower does neither in time: the bank sells pledged assets to bring the loan down itself. This is the outcome the entire structure was built to avoid. The sale happens in a falling market, at prices the borrower did not choose, on a schedule the borrower does not control. Losses that were temporary on paper become permanent in cash, and the strategy the Lombard loan was supposed to protect is dismantled by the loan itself.

Nothing in that sequence is hidden. It is set out in the facility documentation, usually with complete clarity. The practical question is therefore not whether the mechanism exists, because it always does, but how far away from it the borrower chooses to stand. That distance has a name: headroom.

Headroom: why the maximum is not the number

The single most effective protection against a margin call is not a market view, a hedge or a cleverly negotiated clause. It is borrowing less than the bank offers. The distance between what the facility allows and what is actually drawn is a buffer that absorbs market falls before the coverage test is ever threatened. A borrower who draws to the ceiling has surrendered that buffer on day one, in exchange for nothing.

In one transaction we structured, an investor held a EUR 3M diversified portfolio with a Luxembourg institution and needed EUR 1.5M for a property purchase in Spain. The bank applied an advance rate of 60 per cent, which made EUR 1.8M available. The client drew EUR 1.5M and left the remainder untouched. That undrawn margin was not money left on the table. It was the distance the portfolio could fall before the facility came under pressure, and it cost nothing to hold. The repayment plan did the rest, built on rental income from the acquired property and on future distributions, so that the loan was designed to shrink over time while the buffer stayed in place.

The same logic explains why the public formula for lending against assets is always conditional. Montclare describes loan-to-value as up to 70 per cent depending on the transaction, and the qualification is the substance, not the small print. A facility that can reach a given level and a facility that should be drawn to that level are different propositions, and the difference is the borrower’s to manage. The bank prices the maximum. The borrower chooses the exposure.

Headroom has a second dimension beyond the drawn amount: the behaviour of the collateral itself. A diversified portfolio of liquid instruments falls less violently than a concentrated position, so the same buffer lasts longer under stress. A borrower who pairs a conservative drawdown with a steady, diversified book has pushed the margin call from a plausible event to a remote one. Neither decision requires predicting markets. Both are available before signing, and only before signing.

What to establish before you sign

The facility agreement answers, or should answer, a list of questions that only matter on a bad day. How is the portfolio valued, and how often. At what coverage level is the borrower warned, and at what level is the bank entitled to act. How much time does the borrower have to restore coverage before the bank may sell. Which assets would the bank sell first, and does the borrower have any say in the order. None of these points can be negotiated after the call arrives. All of them can be negotiated before it, when the borrower is still a client the bank wants rather than a problem the bank has.

The answers vary between institutions more than borrowers expect. Some banks operate with an early warning threshold well before the enforcement level, which in practice buys the borrower time to act calmly rather than under duress. Some accept a wider range of assets as additional collateral than others. Some are open to agreeing the liquidation order in advance. These differences rarely appear in the headline terms, and they are worth more than a marginal improvement in pricing.

The borrower’s side of the file deserves the same discipline. Where would the additional collateral or the repayment cash come from, concretely, and how quickly could it move. If the answer is that it would come from selling other investments into the same falling market, it is not an answer. The plan has to name resources that hold their value on the days when the portfolio does not. A repayment plan that relies on income the portfolio and the acquired asset actually produce, rather than on refinancing hope, keeps the loan shrinking and the buffer growing through the life of the facility.

There is also a structural question worth asking early: whether the facility should be smaller and combined with other security, rather than leaning entirely on the portfolio. Spreading debt across two forms of collateral reduces the weight any single market fall places on the coverage test. That is a design decision, and like everything else in this article, it is only available before the documents are signed.

Honesty about the risk is what makes the instrument usable

The margin call is not a flaw in Lombard lending. It is the price of the feature that makes the product valuable: the bank can lend quickly, against liquid collateral, without taking a mortgage or dismantling anything, precisely because it holds an enforceable claim on assets it can value daily and sell at short notice. Remove the mechanism and the facility does not exist. The instrument and the risk are the same thing seen from two sides.

What is optional is the borrower’s exposure to it. A facility drawn to its ceiling, secured by a concentrated portfolio, with no external liquidity behind it, is a position that converts an ordinary market correction into a forced sale. The same facility drawn conservatively, against a diversified book, with a documented answer to the collateral question, turns the identical clause into something the borrower will probably never hear about.

The uncomfortable conversation, the one about what happens when markets fall, is therefore the most useful conversation in the entire process. A borrower who has had it can size the facility deliberately, negotiate the mechanics that matter and put the answer to the bad day in writing. A borrower who has not had it is relying on markets to stay calm for the life of the loan, which is not a plan. It is an omission with interest accruing on it.

Lombard credit remains one of the most efficient ways to raise liquidity without interrupting an investment strategy. It rewards exactly one virtue: restraint at the moment of sizing. The investors who use it well are not the ones who found a bank willing to offer more. They are the ones who were offered more and took less. That restraint is invisible in good years and decisive in bad ones, which is why it has to be chosen deliberately: nothing else in the process will impose it.

Montclare does not act as a lender. It structures transactions, prepares the file and coordinates financing with authorised institutions.