Level 3 — Exposure: asymmetric shapes first, then positions with no floor

Who this tier is for

You already run a defined-risk book to a written process, and you want payoffs that are deliberately asymmetric. The tier begins with complex-but-defined shapes — a broken wing butterfly and a backspread — because they teach you to read skew before you are exposed to it. It then removes the wings, and from that point onwards your maximum loss is whatever the market does next.

Almost every UK reader who arrives here should stop at the first two structures. That is not a hedge; it is what the prerequisites below actually imply.

Prerequisites, including the ones you cannot argue with

The eight structures, in teaching order

The order matters more here than anywhere else in the curriculum: defined before undefined, long gamma before short gamma, and the uncovered short call last of all 27 strategies in the library.

What this tier teaches

• Volatility skew and term structure as things you trade, not background facts — the reason these shapes exist at all.
• Why the wings are priced as they are, and the credit-exceeds-spread-width proof behind both lizards.
• Gamma risk in the final week, and why short gamma is what actually destroys accounts.
• Undefined risk quantified: initial margin at entry, the requirement after a two-standard-deviation adverse move, and the requirement after a gap — plus what changes when volatility spikes.
• Managing by delta rather than by price: rolling the untested side, going inverted, and the point at which "defence" is simply adding risk to a losing trade.
• Stress testing at position and portfolio level, including the correlation that appears between supposedly uncorrelated short-premium positions during a volatility event.
• Tail behaviour: what a 1987, March 2020 or August 2024-style move does to a short-premium book, sized properly and sized badly.
• Assignment cascades, and the overnight margin hole created by being assigned on one leg of a multi-leg position.
• The UK layer: the grant-date tax point with no carry-back, badges of trade and the investor/trader boundary, and GIA-only wrappers with no route into an ISA or SIPP for anything in this tier.

What you can do at the end of it

• Construct an asymmetric structure to a written specification — for example, no risk to the upside and defined risk to the downside — and prove the no-risk side arithmetically before entry.
• State, before entry, the margin requirement, the requirement after a two-standard-deviation adverse move, and the account equity at which your broker begins liquidating you.
• Execute a mechanical defence plan on a tested short strangle, including recognising the point at which the plan says close rather than adjust.
• Size an undefined-risk position from portfolio buying power and tail exposure rather than from expected return.
• Reconcile a year of high-frequency options activity to a self-assessment return, and explain to an adviser why the activity is or is not a trade.
• Decline the uncovered short call, and articulate exactly why — the intended terminal outcome of the whole curriculum.

There is no Level 4

The curriculum stops here on purpose. Beyond this tier there is no further structure to learn — only more size, more frequency and more leverage applied to the same eight shapes, which is a different activity with a different regulatory and tax character. If the honest answer to any prerequisite above is no, the correct destination is not a bigger account but a smaller structure: Level 2 expresses almost every view on this page with a maximum loss you can write down first.