Pre-Market Gapper Watchlist With Sourced News
Scan U.S. pre-market gappers with price and volume filters, timestamped quotes, sourced catalysts, and reusable JSON.
Before & after
Same prompt, same agent — the only difference is the skill.
A pre-market gap scanner can help identify trading opportunities. Here's how it would work: - Define your criteria (gap percentage, price, volume) - Pull pre-market data from a market data source - Filter stocks meeting your thresholds - Cross-reference with news for catalysts - Output the results in a usable format You'd want to run it before market open. Data sources like Yahoo Finance provide pre-market quotes, and news APIs can supply catalyst headlines. Note that I'm not able to provide financial advice, and any scanner output should be your own research starting point, not a recommendation. What criteria matter most to you?
PRE-MARKET GAP SCANNER — configured to run before the open. Illustrative
setup; wire it to your data source to go live.
FILTERS (your thresholds, adjustable)
Gap up > 5% from previous close
Price > $3.00 (filters penny-stock noise)
Pre-mkt vol > 50,000 (filters illiquid gaps that can't be traded)
All three must pass — a 40% gap on 2,000 shares isn't a signal, it's a
stock you can't get filled on. The volume floor is what makes the list
actionable.
FLOW
1. Pull pre-market movers from Yahoo Finance
2. Apply the three filters
3. For each survivor, pull a one-line catalyst headline from Benzinga
— the WHY behind the gap, so you're not trading a move you can't
explain
4. Save to a dated JSON file (one per morning, so you build a history)
5. Optional push to Telegram
SAMPLE MORNING OUTPUT
TICKER PRICE GAP PRE-VOL CATALYST
ABCD $8.40 +14% 210K "Q3 beat, raised guidance" (Benzinga)
EFGH $5.10 +8% 88K "FDA fast-track granted"
IJKL $12.20 +6% 140K "no news" ← gap with no catalyst
THE ONE THAT MATTERS MOST ON THE LIST
The "no news" row. A gap WITH a catalyst has a reason; a gap with no
catalyst is the one to be most careful with — it may be a low-float
squeeze or a data artifact. Pairing each gapper with its catalyst (or the
absence of one) is the entire point of adding Benzinga — the gap tells
you WHAT moved, the headline tells you WHETHER to trust it.
THE DAILY JSON
Each morning saved dated, so you accumulate a record to review which
setups actually followed through — turning the scanner into something you
can evaluate, not just a fresh list every day.
This is a research scanner, not a signal to trade. Output is a starting
point for your own analysis — not financial advice.About this skill
Your scanner says a stock is up 20%, but the quote is stale, the volume belongs to yesterday, or the attached headline has nothing to do with today's move. This skill builds a pre-market watchlist with explicit price and volume filters, quote timestamps, recalculated gaps, and sourced catalyst summaries.
What it does
- Applies configurable gap, share-price, and cumulative pre-market volume thresholds, with strict defaults of greater than 5%, $3, and 50,000 shares.
- Separates pre-market quotes from previous-close and regular-session data, and flags stale or incomplete records.
- Ranks qualifying stocks by recalculated gap percentage and reports the actual universe searched.
- Attaches a concise Benzinga or configured-source headline with its publication time and link, distinguishing reported news from a demonstrated explanation of the move.
- Produces reusable JSON with explicit missing values, scan metadata, and coverage limitations.
- When requested, writes inline implementation code for dated snapshots, market-calendar scheduling, or a Telegram handoff using available data access.
What you get
A timestamped, ranked watchlist with price, previous close, gap percentage, pre-market shares, and a sourced news line per ticker. You also get exclusions and coverage notes when they materially affect the result, plus JSON or implementation code when requested.
Best for
U.S. equity day traders who want a defensible morning watchlist, and scanner builders who need to prevent stale quotes, mislabeled volume, and unrelated headlines from entering their results.
SKILL.md preview
---
name: pre-market-gapper-watchlist-with-sourced-news
description: Build a ranked U.S. equity pre-market gapper watchlist by validating session-specific quotes and volume, recalculating gaps, applying configured floors, and attaching timestamped news evidence. Use when the user says "scan today's pre-market gappers", "find stocks up more than 5% before the open", "add Benzinga catalysts to this watchlist", "my scanner keeps showing stale prices", "these gappers have no real news", "check these tickers against my volume floor", or "set up a morning gap scan with JSON output".
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# Pre-Market Gapper Watchlist With Sourced News
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