When bad news becomes good news

STEP 1One piece of news, two knobs

In Lesson 20 you learned that the market reacts to the 'gap versus expectations'. But even for a gap in the same direction, for example 'jobs weaker than expected', there are days when the reaction is the opposite. Let's solve that puzzle with the two knobs from Lesson 1.

A weak indicator turns both knobs at once

In Lesson 1 you learned that a stock price is earnings (EPS) times the multiple (P/E). When an economic indicator such as jobs or consumption comes in weaker than expected, these two knobs move in opposite directions.

First, the multiple knob. A signal that the economy is cooling raises the chance that the central bank will cut rates, or at least not raise them. The market calls this rate-cut expectations. As you learned in Lesson 13, the US Fed is responsible for both prices and jobs, so when jobs weaken there is a reason to lower rates. As in Lesson 14, market rates reflect these expectations right away and fall, and as seen in Lesson 17, when the discount rate drops, the same earnings can be given a higher multiple.

Next is the earnings knob. Fewer new jobs means fewer people receiving paychecks and spending. In the circular flow of Lesson 2, household spending is companies' revenue, so slower hiring eventually lowers the outlook for corporate earnings. If the economy really turns down, it moves into the recession phase seen in Lesson 5, and earnings can shrink sharply.

In pictures: the two-knob scale

On the day a weak indicator comes out, move the sliders to see how much the multiple rises on rate-cut expectations and how much the earnings outlook falls on economic worries. The resulting stock price is the product of the two forces.

When 'rate-cut expectations win', the multiple rises 6% and the earnings outlook falls only 1%, so the stock price rises about 4.9%. Press 'when recession fear wins' and the multiple still rises 4%, but the earnings outlook falls 10%, so the stock price drops about 6.4%. Even with the same wind of rate-cut expectations, if the earnings knob turns harder, the stock price goes down.

STEP 2Three signals that decide the fork

In STEP 1 we saw the contest between two forces. So at the moment of release, which force does the market judge to be bigger? Let's build up, one by one, the three signals that point the direction at the fork.

Signal 1. Is the market's worry now inflation or the economy?

The first signal is the inflation level. As seen in Lessons 8 and 13, when inflation is well above the 2% target, the central bank has to raise rates or keep them high, and the market's biggest worry becomes 'interest rates'. If jobs weaken a little in such a period, a sense of relief spreads first: "now they may not need to raise rates as much". Conversely, when inflation has come down near the target and rate worries have eased, the market's focus shifts to the 'economy'. Then weak jobs are more likely to be read not as relief but as anxiety: "isn't the economy turning down?"

Signal 2. Is it cooling slowly or collapsing fast?

The second signal is the speed at which jobs are deteriorating. A gradual decline in job growth can be a natural process of overheating cooling off. But if the unemployment rate rises quickly over a few months, it can signal that a vicious cycle of layoffs begetting layoffs has begun. People who lose jobs cut spending, and when spending falls, companies cut staff again.

A well-known rule of thumb for measuring this speed is the Sahm rule. Created by Claudia Sahm, a former Fed economist, it says a recession has likely begun when the 3-month average of the unemployment rate rises 0.5 percentage points or more above its lowest 3-month average over the past 12 months.

Source: US Bureau of Labor Statistics (BLS) unemployment rate, current revised values from FRED UNRATE (checked 2026-10-05), calculated by Robin Invest. The July 2024 unemployment rate was 4.3% at first release and was later revised to 4.2%.

The Sahm rule is not all-powerful either. It was triggered by the July 2024 data, but as seen in Lesson 16, the US had not been officially declared in recession as of September 2026. So it is better to read this rule not as 'recession confirmed' but as a signal of 'a moment when the market is likely to lean toward recession fear'.

Signal 3. What was the market already expecting?

The third signal is the priced-in concept from Lesson 20. If the market has already priced in several rate cuts, a weak indicator adds little to rate-cut expectations. What remains is only economic worry, so stock prices tend to fall. Conversely, if the market was worried that "rates might go even higher", one weak indicator can lift that worry and produce a big relief rally. It also matters whether the central bank has room to cut. If rates are already at the floor, the rate-cut-expectations knob itself barely turns.

In pictures: finding the fork

Pick Signal 1 and Signal 2. From the same starting point of weak jobs, you can see which path lights up.

Source: Fed policy rate target FRED DFEDTAR and DFEDTARU (Dec 11, 2007 4.25% → Dec 16, 2008 0–0.25%), S&P 500 close Yahoo Finance (Dec 31, 2007 1,468.36 → Dec 31, 2008 903.25). Checked 2026-10-05.

STEP 3Five release days

Now let's go to actual release days. All five times, US jobs came in weaker than expected. Yet stocks rose three times and fell twice. Let's split them one by one with the three signals.

The same 'miss', different stock prices

The bars are the S&P 500's one-day change on the release day. Tap a row to see that day's numbers and the fork verdict.

Splitting by the three signals

The three days when stocks rose have something in common. Inflation was still in the 3% range, so the market's worry was about rates, and jobs were only 'slightly' weak. On May 3, 2024, wage growth was also lower than expected, adding the interpretation that inflation pressure was easing. Oct 2, 2026 came right after the Fed raised rates again in September, and weak jobs brought the relief that "there won't be another hike in October". All are Path A.

The two days when stocks fell are different. On Aug 2, 2024, with inflation down to the high 2% range and the market's attention shifted to the economy, the unemployment rate jumped to 4.3% and the Sahm rule was triggered. On Aug 1, 2025, the large downward revisions to the prior two months were a bigger shock than the July figure itself. It revealed that "things had been cooling much earlier than thought". All are Path B.

The day it spread to the Korean market

The US jobs report comes out on Friday night Korea time, so the Korean market reacts on the next trading day. On Aug 5, 2024, the first trading day after the Aug 2 release, KOSPI fell 8.77% from 2,676.19 to 2,441.55. Several factors overlapped that day, including a plunge in Japanese stocks, but US recession fear was one of the triggers. Markets with large export shares like Korea are especially sensitive to the Path B signal that 'the US economy is turning down'. This link is covered in more detail in Part 6, Lesson 32.

Source: Naver Finance KOSPI daily close (Aug 2, 2024 2,676.19 → Aug 5, 2024 2,441.55). Checked 2026-10-05.

For stocks, it goes like this

Also remember that long-term bonds can benefit from falling rates on both paths, because of the seesaw principle in Lesson 15. Stocks, on the other hand, see winners and losers among sectors depending on the path. On release days, check the date and the forecast in the Economic Indicator Calendar, and see which sectors 'weak jobs' leads to in the cause-and-effect chain of the Macro Map.

It doesn't always split this way. On many days, stocks that rose like Path A right after the release turn to Path B later in the session, and earnings or policy news on the same day can overshadow the reaction. Use the three signals as a compass that shows which way things are likely to lean.