More Resources
– Deep Dive into AI, LLMs, Automation, and Engineering

Can You Actually Use LLMs in Trading? Mapping AI to the Full Trade Lifecycle

Understand how to apply LLMs in trading — not to predict prices, but to bring reasoning, context, and conviction into algorithmic systems.
Understand how to apply LLMs in trading — not to predict prices, but to
                    bring reasoning, context, and conviction into algorithmic systems.

Published: Sunday, Oct 19th 2025

Reframing the question:Where in the trading lifecycle does reasoning create edge?

The conversation around AI trading today is loud, confident, and mostly wrong. Everyone claims to have “AI-powered signals,” “autonomous trading agents,” or “LLM-driven hedge funds,” yet almost none of these explanations survive basic engineering scrutiny. The truth is simple: LLMs are powerful, but they don’t work the way the hype suggests. If you want to use AI in real markets—not simulations, not marketing decks—you have to understand what LLMs are actually good at, what they fail at, and where they belong in the life cycle of a trade.

At RuggedX, our platforms—Neptune for stocks, Triton for forex, Virgil for crypto, and Orion for options—run in live environments where latency, risk limits, broker rules, and human psychology all collide. We’ve wired LLMs into these systems in dozens of places: from strategy reviews and risk coaching to natural-language ops, GitHub automation, and Alexa voice interfaces. Along the way, one principle became obvious: LLMs are not price oracles; they are reasoning engines.

So the real question isn’t “Can an LLM predict the market?” The real question is: Where in the trading lifecycle does reasoning create edge? To answer that, we need to zoom out and look at the entire cycle a trade travels through—from the first macro scan to the last post-trade debrief.


I. The 20-Stage Trade Lifecycle: A Circular Map for LLMs

A trade does not start when you press Buy or end when you press Sell. It lives inside a continuous loop: markets shift, strategies adapt, prompts evolve, risk rules tighten, and insights feed back into future trades. To reason about where LLMs belong, we built a full circular diagram of the trade lifecycle with twenty distinct stages.

Here is the same lifecycle in text form:

  1. Market Sentiment and Volalility Factors Detection: Identify trend vs range, risk-on vs risk-off, and macro tone.
  2. Earnings, And Insider Trading Analysis: Interpret earnings, macro events, insider trades, and political disclosures.
  3. LLM powered Strategies like Mean Reversions, Pullback, etc: Load the algorithm, timeframe, objective, and risk limits.
  4. Pre-Trade Risk Check: Evaluate account exposure, correlation, liquidity, and overnight risk.
  5. AI Prompt / Strategy Refinement: Rewrite LLM prompts using AI for LLM-based strategies based on their performance and the data insights
  6. Buy Readiness Check: Evaluate the buy readiness based on the tickers technicals, news sentiment whether the setup still makes sense in the current context.
  7. Buy / No-Buy Verdict: Return a strict JSON verdict used by the trading engine. Decides whether we enter a trade or not. Here's a deepdive Blog on this
  8. Position Monitoring Loop: Provide commentary and anomaly detection while the trade is open.
  9. Mid-Trade Risk Re-Assessment: Re-check catalysts, sentiment, and regime shifts.
  10. Exit Readiness Scoring: Evaluate whether the original thesis has decayed.
  11. Post-Trade Debrief: Summarize what worked, what failed, and what to adjust.
  12. Strategy Comparison & Optimization: Compare Strategy A vs Strategy B on the same symbol or window.
  13. Code / Filter Refinement:Backend Admin feature to evalute our algorithmic logic using LLMs. Suggest method fixes, filter improvements, and new technical stacks.
  14. Knowledge Archiving & Agent Task Planning: Store prompts, responses, and generate engineering tasks for the next iteration.

This is what it actually means to “use LLMs in trading.” Not a chatbot pressing buy and sell, but a reasoning layer injected into specific points of the loop.


II. LLMs Are Not Price Oracles — They’re Context Engines

The first misconception we have to kill is the idea that LLMs are built to forecast price. They’re not. These models don’t compute probability distributions or optimize over historical time series the way a statistical model does. Instead, they excel at something different: understanding and transforming context.

That means they can:

  • Compress long earnings transcripts into concise, trade-relevant summaries.
  • Explain why two strategies on the same symbol are producing different outcomes.
  • Flag when a “perfect” technical setup conflicts with live macro or event risk.
  • Generate code suggestions or filter improvements when your backtests show drift.

In other words, LLMs don’t replace your signal engine—they surround it with intelligence. The math proposes. The LLM evaluates, explains, and sometimes vetoes.


III. A Concrete Example: The LLM as a Contextual Veto

Let’s take a simplified version of how this works inside Neptune.

Step 1: The Algo Says “Go”

Our momentum strategy scans U.S. stocks and flags TSLA. The conditions are clean: price pushes above the 50-day EMA, volume is 2x its 20-day average, volatility is expanding, and the broader market is supportive. From a purely technical perspective, it’s a textbook long.

Step 2: The LLM Receives a Structured Snapshot

Before the system commits capital, we route a compact, structured snapshot into the LLM layer:

  • Key technical readings (RSI, EMAs, ATR, volume multiples).
  • Recent intraday price moves.
  • Summarized news headlines and any notable insider or political activity.
  • The written “playbook” for this strategy (momentum long, risk rules, holding expectations).

The model isn’t browsing the web or guessing from thin air. It’s reading a curated slice of exactly what a good human discretionary trader would look at—no more, no less.

Step 3: The LLM Returns a Machine-Readable Verdict

{
    "symbol": "TSLA",
    "decision": "entry_false",
    "justification": "Technical momentum is strong, but TSLA reports earnings in 90 minutes. Entering now exposes the position to binary gap risk that conflicts with the intraday momentum playbook."
}

The verdict isn’t a mystical prediction. It’s a reasoned veto grounded in context the raw strategy does not see. Neptune’s trading engine respects that response and simply does not open the position. The math was right about the momentum; the LLM was right about the risk.


IV. Context Engineering: Feeding the Model Like a Trader, Not a Journalist

If you’ve played with generative AI, you already know the basic rule: garbage in, garbage out. In trading, “garbage” usually means one of two things: irrelevant data or unbounded instructions.

Our systems do the opposite:

  • We feed only the latest, relevant indicators—not 20 years of stale fundamentals.
  • We compress news down to a few bullet points and risk labels.
  • We hard-code instructions that force the model to answer in JSON with specific keys.

This is what gives LLM decisions weight. They aren’t hallucinating stories; they are constrained consultants reviewing a curated context window with a very specific job: “Does this trade make sense right now?”


V. The Hard Boundary: LLMs Advise, Deterministic Code Executes

There’s one non-negotiable rule if you want to use LLMs in live markets without getting wrecked:

The LLM is allowed to influence if a trade happens. It is never allowed to decide how it happens.

That means:

  1. Risk rules, position sizing, and stops are completely deterministic.
  2. The LLM cannot override exposure or capital limits.
  3. Execution is handled by strict, testable code paths—not AI.

This separation of concerns is what turns LLMs from a toy into an actual trading edge. The model thinks; the engine executes; the risk layer enforces discipline.


VI. So… Can You Actually Use LLMs in Trading?

Yes—but only if you stop asking them to be fortune-tellers and start using them as what they truly are: high-bandwidth reasoning partners embedded at the right stages of the trade lifecycle.

In our systems, LLMs:

  • Summarize the market regime and volatility landscape each day.
  • Interpret insider activity, Senate/House trades, and political disclosures.
  • Provide buy/sell/hold readiness scores for live strategies.
  • Generate post-trade coaching reports and strategy comparisons.
  • Suggest method and filter improvements—and even draft code for GitHub PRs.

What they never do is place an order, move a stop, or gamble with capital on their own.

That is the real answer to the question, “Can you actually use LLMs in trading?” Not by handing them your account and hoping they’re right—but by embedding them into a disciplined, circular lifecycle where every decision, explanation, and veto is logged, auditable, and constrained by hard rules.

In that environment, LLMs stop being a buzzword and become what they should have been all along: a durable edge in how you think, not a shortcut in what you gamble on.