Certificates and covered warrants: what they are and how they work

Educational content. The numeric examples (including the AXA case) come from industry technical documentation and illustrate a mechanism: they are not recommendations or forecasts. Certificates and covered warrants are complex instruments.

Two tools for two different problems

Facing a portfolio with losing positions, or the fear of a correction, the sophisticated investor opens the toolbox. Inside are two often-confused families: certificates, precision tools to build a tailored outcome, and covered warrants, power tools for leveraged exposure and hedging. It isn't about which is better — it's about which is right for the job.

Certificates: first of all, they are bonds

The key thing to grasp isn't the return, it's the legal nature: a certificate is a senior unsecured bond of the issuer. So the first risk isn't the market — it's issuer risk: if the issuing bank fails, your investment is at risk regardless of the underlying.

The market has shifted. Between 2010 and 2021 (ACEPI data) Express certificates — almost 80% of issuance in 2013 — collapsed to 36% by 2021, while Cash Collect went from near-zero to about half the market. Investors swapped an Express "jackpot" for a Cash Collect "regular paycheck": certainty became the new gold.

The hidden weapon: tax efficiency

Certificate proceeds (coupons and capital gains) are classified as "redditi diversi" (miscellaneous income). The rate is 26% like elsewhere, but — unlike stock dividends and bond coupons, which are capital income — this category can offset prior capital losses (the "tax basket") from stocks, ETFs, derivatives, other certificates. For an investor sitting on losses, a certificate generating gains becomes a tactical tool to recover them by year-end.

Why market fear "helps" the issuer

A certificate's price is built from the options inside it, and their cost depends on volatility. When volatility spikes — VIX peaks — option cost rises, and for whoever sells options to the investor (the issuer) that's an opportunity: they can offer richer coupons or deeper protection barriers. A moment of panic can be the best moment to issue certain products. (To handle dividend uncertainty, decrement indices emerged: a fixed synthetic dividend subtracted daily, so pricing stays predictable.)

The AXA case: restructuring a losing position

ACEPI documentation offers a concrete example. An investor holds AXA shares at −9%: to break even the stock must rise nearly 10%. The recovery strategy: sell the share (crystallizing the loss, which can then be offset) and buy a Cash Collect Memory on AXA — price €91.16, underlying at €15.02, barrier at €10.33 (a cushion of over 31%), 5.85% premium with memory effect. The key scenario: if at maturity AXA is flat or even down but above the barrier, the certificate repays 100 plus all coupons → a 41.78% return on a stock that didn't move.

The trade-off is everything: you give up dividends and any upside beyond the predetermined return. You swap unlimited but uncertain upside for a defined return with high probability. That's the point of a certificate: structuring a specific outcome.

Covered warrants: securitized options, pure leverage

Unlike classic warrants, covered warrants are created by financial institutions on already-listed assets: in essence securitized options for everyone — a call gives the right to buy, a put to sell. Two "controls" keep you from crashing:

• Delta = the speedometer. How much the warrant moves as the underlying moves. Delta 0.5: the stock rises €1, the call rises €0.50.
• Theta = the fuel. How much value the warrant burns each day just from time passing. You can be right on direction, but if the move is too slow theta eats the gain.

Two second-order greeks complete the picture: gamma (acceleration, maximal at-the-money) and vega (sensitivity to volatility). Watch leverage: the gearing is raw; the real measure is elasticity = gearing × delta.

Using them defensively: the protective put

• Static — the "one-size policy": on a €650,000 portfolio, ~1,000 warrants for 1:1 coverage at maturity. Simple, but imprecise over the holding period.
• Dynamic (delta hedging) — coverage sized by delta (e.g. delta 0.4 → ~2,500 warrants): more precise, but needs constant monitoring.

In short

• Certificates = precision: recovery, income, tax efficiency. They build a specific payoff.
• Covered warrants = power: leverage and hedging, but must be understood to avoid harm.

Start from the basics in the derivatives pillar, or see how hedging enters ETFs in hedged vs unhedged.

Sources

ACEPI — technical presentation and case study · Goldman Sachs — covered warrants handbook · Borsa Italiana — glossary.

Illustrative examples for educational purposes, not recommendations. Issuer risk and leverage can cause losses, possibly total. Past performance does not guarantee future results.