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Defined vs undefined risk

If you remember one idea from everything YOLO teaches, make it this one. The difference between defined and undefined risk is the difference between a position that can hurt and a position that can end you. It is the single biggest reason retail accounts blow up — reason R1 — and it is why YOLO only offers defined-risk strategies.

What undefined (naked) risk is

A position has undefined risk when there is no fixed floor under how much it can lose. The loss is open-ended — it depends on how far the market moves against you, and the market can move further than you think.

Selling a naked call. You collect a small premium, but if the stock doubles your loss keeps growing with no cap. There is no theoretical limit.
Leveraged positions held overnight. A gap on bad news can blow straight through any mental stop before you can act.
Averaging down without a plan. Adding to a loser to “lower the average” quietly turns a small undefined risk into a large one.

Why it blows up accounts

With undefined risk, you can be right most of the time and still lose everything once. A string of small wins is wiped out by a single tail event you never sized for. Because the downside is open-ended, you cannot honestly answer the most important question before a trade: “What is the most I can lose here?” If you cannot answer that, you are not managing risk — you are hoping.

What defined risk is

A defined-risk position has a maximum loss that is known and capped before you enter. It is built into the structure of the trade itself — typically by combining options so that a far leg caps the loss of a near leg. The worst case is a contractual fact, not a hope or a stop you have to hit in time.

A simple worked example

Suppose a stock trades at £100 and you are moderately bullish. Instead of buying shares (where a crash to £60 loses £40 per share) or selling a naked put (open-ended downside), you buy a defined-risk call spread:

Leg	Action	Effect
Buy the £100 call	Pay £5 premium	Gives you the upside
Sell the £110 call	Collect £2 premium	Caps the upside and cuts your cost

Your net cost is £3 per share (£5 paid − £2 collected). That £3 is also your maximum loss, full stop — even if the stock goes to zero. Your maximum profit is the £10 gap between the strikes minus your £3 cost = £7. You know both numbers before you click anything. That is defined risk.

Why YOLO only offers defined-risk strategies

YOLO’s quant engine is built to produce strategies with a stated maximum loss. Undefined-risk shapes are flagged and excluded for retail followers by default. Every candidate you see carries its worst case, its breakevens and a payoff curve, and the order itself ships with a risk disclosure. You never get handed a naked trade — turning a raw idea into a bounded one is the whole point of the platform.

Defined risk caps the loss on a single position — it does not remove risk or promise a profit. You can still lose the full defined maximum on any trade, and losses can repeat. Never trade with money you cannot afford to lose. See the full Risk Disclosure.