Options — Strategy — By The Books

Doctrine — The Book

The Unlucky Investor's Guide to Options Trading

Julia Spina

A quantitative, probability-first framework for options. Not prediction, but statistics. Core idea: options sellers have a structural edge because implied volatility — what the market charges for options — consistently overestimates realized volatility — what actually happens. You are paid to take the other side of fear.

IV Rank and IV Percentile as the primary entry filter — only sell premium when implied volatility is elevated relative to its own history; only buy when it is historically cheap. Without this filter, you are trading blind.
Theta as the edge — time value decays at an accelerating rate as expiration approaches; sellers collect this decay as profit each day a position is held open
Defined and undefined risk, held in a fixed mix — an iron condor's wings cap the loss structurally; a short strangle's does not. Undefined risk is not unmanaged risk: what bounds it is small size, a cap on how much buying power the whole account may deploy, diversification across uncorrelated underlyings, and a mechanical exit — not a stop-loss.
The 21 DTE / 50% profit rule — close or manage the position at 21 days-to-expiration OR when 50% of maximum profit is captured, whichever comes first; this locks in most of the available theta while avoiding the dangerous gamma spike that occurs near expiration
Never hold through expiration — gamma (rate of change of delta) spikes sharply in the final weeks; the reward for the last 50% of profit rarely justifies the pin risk and directional exposure that comes with it
Sized by buying power, not by a loss estimate — each underlying is allocated a share of net liquidating value as buying-power reduction, and the contract count follows from the broker's requirement. Buying power is not maximum loss; it is what the broker makes you post, and it can rise after entry.
Diversification is the risk model — SPY and QQQ behave as one exposure in a selloff, so a portfolio of correlated names is a single position wearing six labels. Uncorrelated underlyings, and a spread of expiration dates at a consistent duration, are what make the position count meaningful.

What The System Trades

Short Strangle

The neutral position. A short call and a short put, both roughly 16 delta, on the same expiry near 45 days out. Sixteen-delta strikes finish out of the money about 68% of the time, and the position is close to delta-neutral at entry. No structural cap on the loss.

IV Rank 30–49 · 16 delta · ~45 DTE

Iron Condor

The same neutral view with wings bought five strikes further out, which caps the maximum loss at the width less the credit. Used where premium is rich enough to pay for the wings — and where the account cannot carry the naked version.

IV Rank ≥ 50, or as the affordable structure

Below IV Rank 30 — nothing

There is no trade worth taking in cheap premium, so the underlying sits empty. An idle name is the system waiting for conditions, not a fault. Occupancy is a consequence of favourable premium; it is never a target met by loosening the entry.

No position

The universe

Six roughly uncorrelated ETFs — SPY, QQQ, GLD, TLT, XLU and FXE — one short-premium position each, entered at a consistent duration but across different expiration dates. Contracts respond differently to time, volatility and price depending on their duration, so a spread of expiries lowers the correlation between open positions.

One position per underlying

Risk Management

A cap on total deployed buying power, set by VIX — the account may commit between 25% and 50% of its net liquidating value depending on where volatility sits, and a trade that would breach the cap is refused rather than trimmed. This is the control that keeps a run of attractive setups from becoming a concentrated book.

Small positions, by allocation — each underlying carries its own share of net liq, between 1.0% and 1.9%, and no single position may exceed 7% of the account undefined or 5% defined. These are ceilings, not targets: trade small, trade often.

No stop-loss on short premium, deliberately — a universal stop at a multiple of the credit is not what makes this framework work, and applying one without testing it for a specific strategy trades a known edge for an untested rule. The controls are size, the buying-power cap, diversification and the exit schedule.

Buying power is not maximum loss — it is the broker's requirement to hold the trade. It can rise after entry as price and volatility move, and an undefined-risk position can lose more than it. Sizing against it is a capacity rule, and it is never presented as a worst case.

21 DTE exit — every position is closed at or before 21 days to expiration, which is what makes a 45-day entry a bounded trade rather than a bet held to the end. Gamma rises sharply in the final weeks and the position stops behaving the way it did when it was opened.

50% profit exit — positions are closed when 50% of maximum possible profit is captured, whichever comes first vs the 21 DTE rule; this locks in most of the edge and frees capital

IV Rank and IV Percentile pre-calculated daily — no manual IV reading required; the system surfaces only setups where the IV environment supports the trade direction

No discretionary overrides — management rules are mechanical; positions are not held beyond their exit triggers on hope

Refusals are recorded, not swallowed — when a setup is found and not traded, the reason and its arithmetic are written down. "Detected but not traded" is a state the system can explain, which is what separates a deliberate wait from a broken feed.