Partial Fills in Automated Trading
For a person watching a screen a partial fill is a minor annoyance. For automation it is a state divergence, and the error compounds through every subsequent decision rather than staying contained.
Tag
options
Every StaxInvesting article tagged options · 25 posts.
25 articles
What Is an Option Chain?
The chain is where every options decision starts, and most of the mistakes people make with it come from treating all the columns as equally reliable. They are not.
IV Crush Around an Earnings Print: Why Being Right on Direction Isn't Enough
Ahead of an earnings print, implied volatility inflates the premium; after it, the volatility crushes, and a long-premium position can lose even when the underlying moves the right way. How entry timing, price filters, structure, and sizing bound that failure mode, and the honest limit of each.
Cash Settlement vs Physical Delivery
Two contracts can track nearly identical exposure and resolve completely differently — one leaves a number in your account, the other leaves a hundred shares per contract you have to fund.
Assignment vs Exercise
The two words describe opposite ends of the same event, and confusing them obscures the fact that only one side has a choice — the seller finds out afterward.
Volatility Skew Explained
If implied volatility were a property of the underlying, every option on it would share the same figure. They do not — and the shape of that disagreement tells you which direction the market considers dangerous.
The VIX Explained
The VIX is the most widely cited number in options and the most widely misunderstood, mostly because people treat it as a forecast rather than what it actually is — a price.
What Is DTE (Days to Expiration)?
DTE is the variable that turns an option from a position into a deadline — and whether a contract expiring today counts as 0 or 1 sounds trivial until it gates an exit rule.
Long vs Short Options Positions
In options, long and short do not mean bullish and bearish. They mean which side of the contract you are on — and that determines your risk profile more than whether it is a call or a put.
Call vs Put Options
Two contract types, four positions, and one distinction that determines the entire risk profile — and it is not the one most people focus on.
Strike Price Explained
The strike is the one term in an option contract that you choose, which makes it the one worth understanding properly — and the place an automated options strategy is most often subtly wrong.
Rho Explained
Rho is the Greek most often skipped, and skipping it is usually the right call — provided you know why, and know the one case where the assumption behind it can quietly distort other Greeks.
Vega Explained
Vega is the Greek that explains losses nobody expected — the ones where the underlying did exactly what you wanted and the position still went backwards.
Moneyness: ITM, ATM, OTM
Three terms that sound like jargon and encode most of what determines an option's behaviour — including the one that decides whether a short position can turn into an unexpected stock position overnight.
Intrinsic vs Extrinsic Value
Every option premium is these two components added together, and knowing the split tells you what you are actually buying — a bet on movement, or a leveraged position in the underlying.
Open Interest Explained
Volume and open interest sit next to each other on every option chain and measure different things — and the fact that open interest is always a day behind is the most practical thing to know about it.
IV Rank vs IV Percentile
These two measures can disagree sharply about the same day, and the disagreement is the point. One extreme week can make rank say conditions are calm while percentile says they are unusually active.
Implied Volatility Explained
Implied volatility explains why an option can lose money while the underlying moves in your favour — which makes it the concept most worth understanding early.
What Changes When You Automate Futures vs Options
The signal logic usually transfers. Everything around it does not — and the parts that differ are the parts that fail expensively, starting with a sizing routine that computes risk from the wrong number entirely.
Futures vs Options for Day Trading
The tax comparison is the one most articles get wrong. Futures receive 60/40 treatment, but so do broad-based index options — so the line runs between Section 1256 instruments and everything else, not between futures and options.
Leverage in Futures vs Options
Calling both of these leverage obscures more than it explains. The question is not which has more — it is which failure mode you are accepting: loss by magnitude, or loss by expiry.
Copy Trading and Taxes
There is no distinct tax treatment for a trade because a provider suggested it. What matters is what was traded — and the gap between index options and ETF options on identical economic exposure is large enough to belong in provider comparison.
Best Copy Trading Platform for Options
The honest answer is that the comparison most people expect does not exist — and understanding why is more useful than a ranked list. Options break four assumptions that forex copy trading is built on, and each break is a real engineering problem.
Copy Trading 0DTE Strategies
Copying same-day contracts compresses every weakness in the replication pipeline into a few hours. Delay that is a rounding error on a swing trade is decisive here, and the cost of that delay grows through the session.
Copy Trading for Options: How It Differs
Almost every copy trading platform describes instruments that are continuous, never expire, and have no strike. Options break several assumptions that material quietly relies on — starting with what a missed exit signal costs.