What Impact Levels Are and Why They Matter
NewsEdge tags every headline with one of three impact tiers - High, Medium, or Low - so you can triage your attention the moment an alert arrives. The tier is not a directional call. It is a signal about urgency: how fast you need to evaluate the news, how large a move is plausible, and which tools to reach for next. Without this filter, a routine SEC filing and an earnings miss look identical in a live news feed. With it, you know at a glance which headlines deserve immediate attention and which ones you can read at your own pace.
Understanding the tiers also prevents the most common news-trading mistake: treating all headlines as equally urgent. Speed is an advantage on High impact events. Patience is an advantage on Medium impact events. Ignoring Low impact events entirely is usually fine for active traders. The impact level tells you which mode to be in.
High Impact: Act Quickly, Verify First
High impact events are the ones that tend to produce immediate, meaningful price moves - typically 2-10% for large-cap stocks and larger for small caps and biotech. The window between the alert and the first significant price reaction is often measured in seconds to minutes, not hours. That means you need your watchlist ready and your workflow pre-planned before the alert hits.
Events that carry a High impact tag include:
- Earnings beats, misses, and guidance changes. The headline number (beat or miss) matters, but guidance often drives the sustained move. A company that beats earnings but cuts guidance can sell off hard even as retail buyers chase the initial pop.
- FDA approvals and rejections. Binary outcomes for biotech names. Approvals can produce 30-50% gaps overnight. Rejections can cut a stock in half. These rarely have an ambiguous middle outcome.
- Mergers and acquisitions. The target company typically pops 20-50% on announcement. The acquirer often dips as the market prices in dilution or deal risk. Both moves tend to happen in the first minutes.
- CEO or major leadership changes. Unexpected departures - especially a fired or resigned CEO - often produce sharp moves as the market reprices execution risk or strategic direction.
- Significant regulatory actions. Fines, bans, or investigations from the FTC, SEC, or FDA that affect core business operations. These can have lasting impact beyond the initial reaction.
On High impact news, options can move 20-50% or more in the first hour. That leverage cuts both ways. Use stops and keep position size modest. The event is only half the trade - the other half is how the market digests it in the minutes after.
How to Respond to a High Impact Alert
- Read the full headline, not just the tag. A High impact earnings alert tagged "beats estimates" could still be a sell if guidance was lowered. Spend five seconds reading the summary before touching your order.
- Switch to OptionFlow immediately. Check whether flow is confirming the expected direction. If the news is bullish and you see aggressive call sweeps flowing in, you have two aligned signals. If flow is surprisingly bearish despite the headline, that conflict is important information - do not dismiss it.
- Note the timestamp. If the alert arrived 10 minutes ago and the move is already 5%, you may be chasing. The best entries on High impact events happen in the first 1-3 minutes, not after the gap has already moved.
For a concrete example: you have the Market Moving preset active and the High filter enabled. At 8:47 AM a High impact alert appears: "AAPL: Q2 revenue beats by $2B, EPS beats, guidance raised." Before you act, you switch to OptionFlow and see call sweeps at the weekly $215 strike coming in aggressively at the ask. Both signals align. You are not chasing the gap - you are entering with two independent data sources pointing the same direction. That alignment is what separates a disciplined news trade from an impulse trade.
Medium Impact: Confirm Before You Act
Medium impact events include analyst upgrades, downgrades, and target price changes; guidance updates; partnerships and product launches; and major industry research. These tend to produce moves in the 1-5% range, and they play out over hours to days rather than seconds. You have time to think.
The key discipline with Medium impact news is confirmation. A single analyst upgrade is almost always noise - it rarely justifies a new position on its own. But two or three upgrades on the same name within a week, especially when OptionFlow also shows accumulation at key strikes, is a materially different signal. Look for clustering, not single events.
Medium impact news is also useful for refreshing a thesis you already hold. If you are in a swing position on a name and a Medium impact analyst upgrade hits with a raised target, that is a data point supporting your hold. It is not a reason to add aggressively, but it is useful context.
Low Impact: Context Only
Low impact events are general commentary, research notes, industry trend pieces, and routine SEC filings. Expected price moves are under 1% and often zero. These items rarely justify a new trade, but they can be valuable for building a longer-term thesis on a sector or for understanding the narrative around a name you are watching over weeks or months.
The practical rule: skim Low impact items during pre-market or after hours when you have time. Do not let them interrupt your session focus. If you are in active trades, ignore Low impact entirely and keep your attention on High and Medium.
Choosing the Right Filter for Your Style
Your impact filter setting should match how you trade, not how someone else trades:
- Day trading: Set the filter to High only. Use the Earnings Focus or Market Moving preset. You need speed and simplicity - extra headlines cost you time on the trades that matter.
- Swing trading: Set the filter to High and Medium. Use the Analyst Activity or Corporate Actions preset. You have time to evaluate Medium impact events and they often set up the best swing entries.
- Biotech focus: Set the filter to High and use the Biotech Catalyst preset. FDA decisions and clinical trial results are your primary signal. Keep everything else filtered out to avoid distraction during binary-outcome sessions.
- Position trading or thesis building: Use all three levels. Low impact items are relevant when you are building a multi-week or multi-month view on a sector or macro theme.
You can change the filter at any time during the session. Many traders start the morning with High only, then open it to Medium during quieter periods, then close it back to High near market-moving events like FOMC or earnings after hours.
Common Mistakes
- Treating "beats estimates" as automatically bullish. Read the full context. Guidance cuts, shrinking margins, or weak forward revenue can turn an earnings beat into a sell-off within minutes. The impact tag tells you something moved; you still have to figure out which direction.
- Applying the same urgency to every tier. Urgency is an asset on High impact and a liability on Medium. Rushing into a Medium impact analyst upgrade before confirming with flow data is one of the most common ways to enter a poor setup.
- Acting on a single analyst upgrade or downgrade. Single analyst actions are Medium impact for a reason - one firm's opinion rarely moves a well-covered stock persistently. Wait for multiple upgrades or a pattern of analyst revisions before treating analyst activity as a trade catalyst.
- Leaving the real-time toggle off during High impact events. If the feed does not auto-refresh, you can be 90 seconds behind on an event where the price reaction happens in 60 seconds. Confirm the toggle is active at the start of every session.
Related
Start with NewsEdge Quick Start for the full setup walkthrough, including presets, the real-time toggle, and the daily workflow. For execution frameworks around each impact tier - how to trade earnings, FDA events, analyst upgrades, corporate actions, and market-moving scalps - see 5 Catalyst Trading Strategies Using NewsEdge.