News, catalysts and what is already priced in

News moves markets. Everyone knows that. What almost no beginner knows is how: which news matters, how fast it is absorbed, and why the obvious reaction is so often the wrong one. This lesson is about the gap between "the news was good" and "the price went up".

Scheduled vs unscheduled

Scheduled catalysts are on a calendar. Everyone knows they are coming and has positioned for them:

Unscheduled catalysts arrive without warning: a merger announcement, a regulatory action, a CEO resignation, a geopolitical shock, an exchange hack, a viral post. These cause the biggest gaps because nobody could position for them.

Speed: you are not first

When a scheduled number is released, the first trades happen within milliseconds. Algorithms read the headline number and trade before a human has finished reading the first sentence. By the time you have opened the article, the initial move is complete, and what you are seeing is the second phase: humans and slower funds deciding whether the first move was right.

This has a hard implication: trading the headline is not available to you. What is available is the reaction to the reaction, which requires patience, and the days-to-weeks re-pricing that follows a change in fundamentals, which requires analysis. Neither involves clicking "buy" the instant a red banner appears on a news site.

Expectations, not facts

A price already contains the market's collective guess about the future. When news arrives, the price does not react to the news itself; it reacts to the difference between the news and what was expected.

A company that everyone expected to earn $1.00 per share reports $1.05. Good news, right? If the whispered expectation among professionals was $1.10, the stock falls. A company expected to lose $0.50 loses only $0.40, and the stock rallies 15% on a loss. An inflation print that is high, but lower than feared, sends stocks up.

This is what "priced in" means. It is not a mystical phrase; it is the plain observation that the number on the screen before the news already reflected a forecast, and only the surprise moves it.

Key idea: Markets react to surprise, not to news. Good news relative to a great expectation is bad news; bad news relative to a terrible expectation is good news. If you do not know what was expected, you cannot predict the reaction.

Where to find "expected"

• For earnings: the consensus estimate is published by data providers and shown by most brokers. The "whisper number" is not published anywhere reliable; it is inferred from how the stock has traded into the report.
• For economic data: the consensus forecast is listed on any economic calendar next to the release.
• For central banks: futures markets price the probability of each rate outcome, and it is published (for the US, the CME FedWatch tool).
• For everything else: the price action into the event is the expectation. A stock that has rallied 20% into earnings has priced in something good.

Types of surprise

Surprises come in several sizes, and the market treats them differently:

1. A one-time miss or beat. Reprices the stock for a day or two, then the old trend often resumes.
2. A change in guidance. The company says next quarter will be different. This reprices the future, and the move tends to persist for weeks as analysts update models.
3. A change in regime. A central bank signals a new direction, a regulator changes a rule, a product category is disrupted. These reprice for months.

Beginners treat all three as the same "news". Professionals ask which type it is, because the answer determines whether to fade the move or follow it.

The news you should ignore

Most of it. Specifically:

• Explanations after the fact. "Stocks fell on rate fears" was written by a journalist who had to write something. If stocks had risen, it would say "stocks rose as rate fears eased". The explanation is fitted to the move, not the cause of it.
• Anything with a price target and a rocket emoji.
• Old news. If you learned it from a mainstream outlet, the market learned it hours or days earlier.
• Analyst upgrades and downgrades as a trading signal. They move stocks for about a morning.
• Rumors in a chat room about a stock that trades $50,000 a day. That is not news; that is the setup for a pump.

A sensible relationship with the news

1. Know the calendar. Never hold a position through a scheduled catalyst without deciding, in advance, that you accept the gap risk. Most beginner disasters in options and small caps are earnings gaps that the trader did not know were coming.
2. Learn the expectation before the event, so you can interpret the reaction.
3. Wait. The first five minutes after a release are for algorithms and gamblers. The trend that matters usually reveals itself over hours or days.
4. Watch the reaction, not the headline. A stock that gaps up on good news and then sells off all day is telling you something more important than the news did. That is the subject of the next lesson.

Try it: Pull up an economic calendar for the coming week. Find every high-impact release and write down the consensus expectation for each. After each release, note the actual number, whether it was above or below expectation, and what the S&P 500 future did in the first minute and the first hour. Do this for a month and you will have a better feel for "priced in" than most people ever get.

Recap

• Catalysts are scheduled (earnings, data, rate decisions, expirations) or unscheduled (shocks); know the calendar for anything you hold.
• Algorithms trade headlines in milliseconds; the headline reaction is not available to you.
• Prices react to the gap between news and expectations, not to news itself.
• Distinguish one-time surprises, guidance changes and regime changes; they persist for very different lengths of time.
• Ignore after-the-fact explanations, old news and chat-room rumors; watch the reaction instead.