What is a shark-fin note and why is it called that?

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AcadiFi · Accepted Answer

A shark-fin note has a payoff that rises linearly with the underlying up to a barrier, then collapses to a fixed rebate if the barrier is breached — creating a payoff diagram resembling a shark's dorsal fin. Consider Ironhaven Asset Management's 1-year shark-fin note on the Hang Seng with a starting level of 25,000. Terms: 100% principal protection, participation in upside up to a 130% barrier (32,500), and a 3% rebate coupon if Hang Seng touches 32,500 at any point.

If Hang Seng rises to 128% (32,000) without touching 32,500, investor earns 28% return. If Hang Seng rallies to 32,500 then drops, the upside participation is knocked out and investor receives only the 3% rebate plus principal. The structure is bond + up-and-out call + digital rebate option.

Economically, the investor is betting that the market will rise moderately but not spike past the barrier. Issuers like this structure because the knock-out feature caps their option payoff, making the note cheap to hedge. Shark-fin notes are popular in Asian retail markets (Hong Kong, Singapore, Taiwan) where retail demand for equity-linked yield is strong. Risk: if a strong rally knocks out the note, investors miss significant upside for a tiny rebate. Best suited for range-bound or slightly bullish views.

What is a shark-fin note and why is it called that?

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