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
automation
Every StaxInvesting article tagged automation · 35 posts.
35 articles
Time in Force Explained
Time in force is the order parameter most often left at whatever the platform defaults to — and it is the only one that says what happens when an order does not fill.
Market Order vs Limit Order
Almost every order-type question in trading reduces to this one — and the two failure modes are opposite in a way that determines which belongs where.
Position Sizing and the Divide-by-20 Rule
Position sizing is the only control in trading that works regardless of whether you are right. Everything else depends on the market cooperating in some way — sizing does not.
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.
What Is a Trailing Drawdown?
Under intraday trailing, an unrealised high you never converted still raises your floor — which means traders fail while their realised results are positive. It is the rule most often misread, and the misreading happens during a breach.
What Is a Prop Firm?
The detail most content glosses over is that these accounts are typically simulated and the firm's revenue comes substantially from evaluation fees. That is a structural fact, not an accusation — and it changes how a pass rate should be read.
Futures Automation via TradingView Webhooks
The webhook mechanics are the same. What changes is that the payload must name a contract month, the day boundary is not midnight, rollover produces signals expressing no view, and an endpoint that fails at 2 AM loses alerts nobody will tell you about.
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 Market Hours and the Trading Session
Nearly-continuous access sounds like an unambiguous advantage. It is more accurately a different shape of market, with hours that behave nothing alike — and a day boundary that breaks daily counters written for equities.
Futures Rollover Explained
Rollover has no options equivalent, and it is the futures mechanic most likely to catch an automated system written for options — starting with the fact that it generates order activity expressing no view at all.
How to Automate Futures Trading
The credential work takes an afternoon. The validation determines whether the setup is one you should trade — and the futures-specific part is that a process which stops overnight has stopped trading without telling you.
What Is a Futures Trading Bot?
The bot is execution. Whether it makes money depends entirely on the rules it is given — and most of the value in an automated system was created before any code ran.
Automated Futures Trading: A Complete Guide
Futures automation shares infrastructure with options automation and almost none of its vocabulary. This is the map — contract specs, rollover, posted margin, and a session that barely closes.
Automated Trading vs Copy Trading
Both run on identical infrastructure, which is why they get conflated. But automation is a bet on your analysis and copying is a bet on someone else's judgment — and the diligence each requires is completely different.
Manual vs Automated Copy Trading
Skipping trades is not random. It correlates with how the last one went, so you skip after losses and participate after wins — which means you are no longer running the strategy you subscribed to, but a filtered version chosen by your emotional state.
tastytrade API: A Practical Guide for Developers
The tastytrade API is capable and reasonably documented, and there are still things you only learn by building against it in production. This is a practical guide to the parts that matter: the OAuth2 authentication flow that replaced session tokens, order submission and the dry-run validation pattern, tracking an order through its status phases, and the production realities, reconnection, reconciliation, rate limits, that a happy-path tutorial skips. Verify specifics against the live docs; the patterns here are what last.
Why Win Rate Is the Wrong Metric to Optimize
Win rate is the metric the trading-education industry loves to advertise, because a high percentage sounds like skill. It is also nearly useless on its own: a 90% win rate can lose money and a 40% win rate can be highly profitable, because what determines profitability is expectancy, the size of wins and losses, not how often you win. Here is the math, and why optimizing for win rate pushes you toward exactly the wrong strategies.
Walk-Forward Analysis: How to Actually Validate a Strategy
Everyone says to forward-test a strategy to catch overfitting. Almost no one explains how to structure that testing rigorously. Out-of-sample validation and walk-forward analysis are the methods: optimize on data the strategy is allowed to see, evaluate only on data it is not. This explains how they work, the anchored-versus-rolling choice, the data-leakage traps, and the honest limit that even these methods can be gamed.
How to Read a Backtest Without Fooling Yourself
A backtest result is only as honest as the assumptions behind it, and several common ones systematically make a strategy look better than it is. Tick versus bar data, slippage assumptions, survivorship bias, look-ahead bias, and overfitting each inflate results in a specific way. This is a practical guide to reading a backtest report without letting it fool you.
Paper Trading vs Backtesting: They Answer Different Questions
Backtesting and paper trading are both ways to test a strategy without risking money, and they are not two grades of the same thing. They answer categorically different questions, one about the past you can see, one about live conditions you have not, and each has its own failure mode. Treating them as interchangeable, or treating either as proof a strategy will profit, is how traders talk themselves into confidence they have not earned.
Order Types for Automated Execution: Which Ones Actually Fit
Market, limit, stop, and stop-limit are the core order types, and choosing among them is a tradeoff between certainty of fill and certainty of price. Automation changes the calculus, because software cannot watch a resting order and improvise the way a human can. This explains each order type honestly, including the ways stops do not work the way people assume, and which fit automated execution.
Latency in Options Order Routing: What Actually Matters
Trading platforms love to advertise speed, sub-millisecond this, ultra-low-latency that. For most retail options trading, those milliseconds are noise relative to the costs that actually determine your outcomes: the bid-ask spread you pay on every trade and the slippage you take in bad conditions. This separates the latency that matters from the latency that is marketing, including a trap in how speed is measured.
Algorithmic vs Discretionary Options Trading: Where Each One Fails
Algorithmic and discretionary options trading are usually pitched as opposites, with each camp selling its side. The honest picture is that both approaches have genuine strengths and genuine, specific ways they fail, and that for most retail traders they are not even a true binary. This compares them on where each breaks down, and why the realistic answer for many traders is a blend the debate tends to ignore.
Self-Hosted vs Cloud-Hosted Trading Bots: The Honest Tradeoff
Self-hosted and cloud-hosted trading bots represent a real architectural tradeoff, not a clear winner. Self-hosting gives you control of your credentials and your stack, and hands you the uptime burden and operational responsibility that come with them. Cloud-hosting takes that burden off your hands, and asks you to trust a third party with more. This is the honest comparison, conceding the real costs on both sides, including the side StaxInvesting is on.
What to Look For in an Options Trading Bot (and What Should Make You Walk Away)
The options-automation category is full of tools that look similar and are not. The differences that matter for your safety and your money are not the flashy features; they are the fund-access model, the honesty of the track record, the depth of the exit logic, and what the system does when things break. This is a skeptic's evaluation guide, and it insists you apply every criterion to every vendor, including the one that published it.
Build vs Buy: What It Actually Takes to Automate Options Yourself
Any competent developer can wire a signal to a broker API and place an order. The gap between that weekend prototype and a system you would trust with real capital is enormous, and it lives in the unglamorous problems: state management, reconnection, reconciliation, and the edge cases that only appear in production. This is an honest inventory of what building your own options automation actually requires, and a fair account of when you should build it anyway.
How Automated Options Trading Actually Works: From Signal to Fill
Automated options trading is often described in the abstract. Mechanically, it is a pipeline: a signal fires, a payload travels to the automation engine, an order is constructed and submitted to a broker, a fill comes back, and exits are managed to close. This walks each stage of that pipeline concretely, and is honest at every step about where the clean diagram meets the friction of real markets.
The Headline Round-Trip: Why Trading Unconfirmed Catalysts Is a Trap in Both Directions
Some catalysts recur: the same headline, the same market reaction, the same reversal, over and over. When a market keeps round-tripping on a diplomatic story that one of the named parties will not even confirm, both chasing the move and fading it have proven costly. This is about the specific danger of trading on catalysts you cannot verify, drawn from a real, repeating example, and why the disciplined response is neither to chase nor to fade but to size for uncertainty.
What Automated Options Trading Can and Cannot Do
Automated options trading is widely sold and widely misunderstood. It does a specific set of things genuinely well, removing hesitation, enforcing exits, executing consistently, and running when you cannot watch, and it cannot do the things it is most often implied to do. It does not create an edge, rescue a losing strategy, or eliminate losing days. This is the honest accounting of both sides of that line.
Can 0DTE Strategies Be Automated? What Automation Solves and What It Cannot
0DTE strategies can be automated, and they increasingly are. The useful question is not whether but what automation actually solves. It solves the execution problems, consistency, speed, and exit discipline, that the instrument's brutal timeframe makes nearly impossible to handle manually. It does not solve the strategy problem, and it cannot manufacture an edge. This is the honest dividing line, drawn clearly, at the point where education meets product.
Which Greeks Matter When Software Executes Instead of a Person
Most explanations of the option Greeks assume a human is reading them to make a decision. When software executes instead, the Greeks change roles entirely: delta becomes a literal trigger threshold, gamma becomes the reason a static stop goes stale between evaluations, and the slow Greeks fade in relevance for same-day trading. This is the Greeks reframed for automated execution, which is a different thing than the generic version.
Stacked Overnight Catalysts and Gap Risk: When a Fed Decision and Megacap Earnings Collide
Some sessions stack catalysts: a Fed decision and megacap earnings hours apart, resolving overnight while the market is closed and you cannot act. This is a mechanical look at what compounding overnight events do to gap risk, why a stop-loss is not the protection most traders assume it is across a gap, and how automated exit logic behaves when the market reopens somewhere far from where it closed.
0DTE Meaning: What Zero Days to Expiration Options Actually Are
0DTE is one of the most-searched terms in options trading and one of the least understood by the people searching it. This is a complete, honest definition: what zero days to expiration means, why the mechanics make it behave unlike any other option, why it now drives a majority of SPX volume, and the uncomfortable research on how retail traders actually do with it.
Automated Trading Alerts: What They Actually Do (and What You Probably Want Instead)
Search 'automated trading alerts' and every result blurs two different things: a notification that tells you to act, and software that acts for you. They are not interchangeable, and picking the wrong one is how people end up either glued to a screen or automating a strategy they never validated. This is the honest distinction, which features belong to which, and how to tell which one you actually need.