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BOBOO REPORT · #05 Sharp sell-off

30 Years of History: Where We Stand

Read markets as if viewing a forest from the sky
China Korean stocks Investor flows
Jul 30, 2026 (Thu) 22:26 · Seoul
A forest viewed from the sky after the wind has stopped — a fresh wound in the middle, and two healed old wounds on either side

Today, the wind seemed to ease. KOSPI −1.23%; KOSDAQ: −2.70%. A quiet day compared with the consecutive circuit breakers through yesterday. But raise the hot-air balloon a little higher and put 30 years into one view, and today's position becomes clear. This forest has fallen this fast only twice in this forest's history.

01

27 Trading Days Ago, We Were at a Record High

KOSPI record 9,114.55 — June 22, 2026, just 27 trading days ago
KOSPI
5,593.56
-1.23%
From the record (6/22), 9,114.55: −38.6%
KOSDAQ
644.78
-2.70%
From the high (4/27), 1,226.18: −47.4%
SK hynix
1,322,000
-5.64%
Foreign +582.7bn net buying, yet shares fell
Samsung Electronics
207,000
-0.72%
Q2 operating profit: 89.5tn a record, yet shares fell

The high remains within sight, defining this episode. The 2000 dot-com bubble fell −88.5% over 4 years and 5 months; the 2008 financial crisis took 15 months. People had time to adapt. This time, they did not.

02

A Position Not Seen in 30 Years

Full calculation: KOSDAQ 7,521 trading days (from 1996-07-02); KOSPI 9,438 (from 1990-01-04)

First, KOSDAQ. Use the same ruler — the worst 60 trading days of each crisis — and the ranking is below. Every figure uses KOSDAQ closing index levels, without mixing indices.

KOSDAQ — worst 3-month (60-trading-day) falls by episode
RankEpisodeKOSDAQ worst 3-month fall
1Dot-com crash (2000-05-24)−55.21%
2Global financial crisis (2008-10-27)−51.50%
32026 current (today)−45.92%
4Pandemic (2020-03-19)−33.88%
5Asian financial crisis (1997-12-24)−27.26%
62022 rate shock−23.41%
72018 US–China dispute−20.70%
82011 European debt crisis−15.00%
92024 emergency martial law−13.27%

Deeper than the pandemic, much deeper than the Asian financial crisis. Only dot-com and 2008 sit above today's KOSDAQ. One measure is clearer: cumulative 60-trading-day falls below −45% occurred over 30 years on just 23 days, concentrated in three years.

2000
17 days
Dot-com bubble
2008
4 days
Financial crisis
2026
2 days
7/29 · 7/30 — Entered yesterday

In between, not once in 25 and a half years did the index enter this zone. That is the KOSDAQ. Switch to the KOSPI and the record is worse.

KOSPI — worst 20-trading-day (1-month) falls
RankKOSPI episodeKOSPI 20-trading-day fall
12008-10-24 financial crisis−37.48%
22020-03-19 pandemic−33.61%
32026-07-29 current−33.19%
41997-12-12 IMF−30.23%
51998-05-26−25.93%

Deeper than the Asian financial crisis. Today's −32.64% ranks among 9,418 windows over 36 years. Only five windows were worse — bottom 0.05%.

But July is not over. The KOSDAQ's July fall of −29.62% ranks 2nd ever for a month (1st: 2008-10, −30.12%). The gap is 0.5%p. Tomorrow could change the ranking. This figure is provisional until the 7/31 close.
03

The Asian Financial Crisis Took 15 Months; This Took 3

Rank by speed rather than total decline, and the order changes

The Asian crisis was deeper overall. The KOSDAQ fell from 1,371.90 on 1997-08-09 to 607.00 on 1998-10-07, a decline of −55.75%. Today it is −47.4%. But the Asian crisis took 15 months to get there; this took 3.

EpisodeFall / DurationSpeed
2020 pandemic−38.2% / 23 days−1.661pp/day
2026 current−47.4% / 63 days−0.752pp/day
2024 emergency martial law−16.9% / 25 days−0.676pp/day
2011 European debt crisis−24.8% / 37 days−0.670pp/day
2008 financial crisis−68.5% / 316 days−0.217pp/day
Asian financial crisis−55.8% / 339 days−0.172pp/day
Dot-com bubble−88.5% / 1,077 days−0.082pp/day

The Asian crisis saw −18.6% in 1997 and −23.6% in 1998: an attritional war eroding 20% per year. Today, 47% in one quarter. Only the pandemic was faster, and it ended in 23 days. This episode is on day 63.

04

Verdicts on Yesterday's Five Observations

Today's data answer the five questions left by #04
1
① Reported margin loans — verdict: little liquidation
KOSDAQ margin balance: 6.92tn (7/28) → 6.82tn (7/29), just −0.10tn (−1.4%). Total margin also fell only −0.19tn, from 33.19tn to 33.00tn. On the first crash day, 7/28, margin loans actually rose(32.74 → 33.19tn) — averaging down. The answer to #04's question of how much the KOSDAQ's 6.9tn would shrink is hardly at all. That means forced liquidation may still lie ahead.
2
② Leverage intensity at 0.95 — verdict: the bad path
0.980(7/28) → 1.029(7/29) → 1.058(7/30). Rather than falling, it rose. #04 said a falling numerator (liquidation) would be a bottom condition, while a falling denominator (more index losses) would signal a tightening bear. What occurred was the denominator path: debt stayed while the index fell. It now exceeds the pandemic low (0.948) by 11.6%.
3
③ Foreign KOSDAQ net buying + short balances — verdict: unresolved
7/28 +KRW 86.9 billion → 7/29 +KRW 308.2 billion → 7/30 +248.5bn, maintaining 3 consecutive days of net buying. But short-selling balances also fell (KOSDAQ KRW 5.86 trillion, July −10.52%). We cannot yet distinguish short covering from bargain buying. Net buying must persist after balances stop shrinking before it can be called structural.
4
④ KOSDAQ/KOSPI defense at 0.0994 — verdict: holding so far
0.1170 → 0.1153(−1.5%). Distance to the 10-year low of 0.0994: 16.0%. The defense held, even though KOSDAQ fell more today (−2.70% vs −1.23%).
5
⑤ Restoring the biotech defense — verdict: partial recovery
EcoPro BM +4.75% and other heavily sold stocks rebounded, but it was rotation, not earnings evidence. It is too soon to say a refuge has returned within the KOSDAQ.

Then last night's FOMC. Before the meeting, consensus favored a hold; attention centered on September hike odds. The result was a hold (3.50–3.75%), but three dissented in favor of a hike. Markets now weigh a hike this year rather than a cut. The hawkish side was confirmed.

05

Beyond the Pandemic Low

KOSDAQ margin loans per 100 index points — add today to a 10-year series
KOSDAQ leverage intensity and index
Intensity = KOSDAQ margin loans ÷ (KOSDAQ index ÷ 100). This measures debt supporting 100 index points. With debt unchanged, a falling index raises intensity. A falling numerator — less debt — is the healthy path; a rising ratio from a falling denominator is the opposite. Today's 1.058 divides 7/29 measured margin loans (KRW 6.82 trillion) by the by the 7/30 closing index. Margin loans are released T+1, so 7/30 data arrive tomorrow. Any 7/30 liquidation would make actual intensity lower.
7/28
0.980
6.92tn / 705.85
7/29
1.029
6.82tn / 662.68 Confirmed
7/30
1.058
6.82tn / 644.78 Provisional
Pandemic low
0.948
2020-03-19 · +11.6% above

Yesterday's report gave 1.045 (estimated), using the 7/28 balance because 7/29 margin data were not yet released. Today's observation confirmed 1.029, with today added at 1.058. That is the upward turn at the green line's end.

Meanwhile, investor deposits rose instead: KRW 103.88tn (7/22) → 109.59tn(7/29), over 5 days, +5.71tn. Stock-sale proceeds have not left the market; they are sitting as cash. Debt did not fall, cash accumulated, and only the index declined.

06

China Was the Epicenter

7/27 CXMT listing, first day +466% — Korean stocks collapsed two days later

#04 called the trigger the AI multiple. Today that trigger acquired a name. China's ChangXin Memory Technologies (CXMT) listed on July 27 and surged +466% on its first day. It raised CNY 57.9 billion (about KRW 11.6 trillion; #04's KRW 8.6 trillion came from pre-listing reports), Asia's largest IPO in 2026, with intraday market cap of KRW 802 trillion. On top came Chinese localization of DUV lithography equipment.

What collapsed was the competitive landscape rather than earnings, and the speed of price increases rather than prices.

DRAM contract prices, 1Q26
+105~110%
QoQ / Record
DRAM contract prices, 3Q26
+13~18%
QoQ forecast / Slowing
DDR4 8Gb fixed price
$21
June / Since collection began in 2016, the highest
NAND fixed prices
18 months
of consecutive increases so far

Prices are still rising. What turned down was the rate of increase. The market responded to slowing, rather than falling prices. Combine that slowdown with record earnings and the phrase peaking appeared.

Samsung Electronics Q2 operating profit
KRW 89.4924 trillion
YoY +1,813.8% / 3rd consecutive record quarter
└ DS division
KRW 89.2 trillion
Of total operating profit: 99.7%
└ DX division
-800bn
deficit — Component costs consumed device profits
SK hynix Q2
KRW 60.5426 trillion
A record, but below consensus estimates

The two companies' consensus-estimate P/Es are now in the 4x range: Samsung Electronics 4.44x, SK hynix 4.20x. Shares are −45% and −56% from 52-week highs while earnings rose 18x. Foreign buyers' argument is that earnings like these make 4x P/E unreasonable. Sellers' argument is that those earnings are the peak, and 4x is a normal multiple for peak earnings. Today's market split over this proposition.

07

Korea Was Hit Harder

The epicenter was semiconductors, yet we shook more than the epicenter
Market1 month3 months1 year
KOSPI−34.01%−15.44%—
KOSDAQ−30.62%−47.42%—
Philadelphia Semiconductor (SOX)−23.79%+4.10%+45.54%
TAIEX−13.43%+1.60%+45.38%
Nikkei−11.70%+2.20%+22.72%
Nasdaq−5.33%−0.90%+4.13%
S&P 500−1.67%+2.48%+5.94%
Dow−1.13%+4.99%+6.46%
Hang Seng+13.01%+0.70%+0.22%

S&P −1.67%, Dow −1.13%. The broader US market is intact. SOX alone is −23.79%, yet even SOX over 1 year remains +45.54%. It is giving back gains rather than collapsing. Taiwan, despite TSMC, is −13.43%, but Korea is −34%. The extra 7–10 percentage points of damage is Korea-specific, and its name is leverage.

Single-stock leveraged ETFs/ETNs based on Samsung and SK hynix had accumulated KRW 6.8 trillion. In the slump, these products traded KRW 5.4 trillion a day and individual products recorded −26~29% as they sold themselves. Daishin Securities expects meaningful easing of liquidation pressure in 3–4 weeks.

The KOSDAQ's separate decline has the same cause. KOSDAQ/KOSPI turnover share fell from 31.0% to 17.5%, down 13.5 percentage points. KOSDAQ daily-average turnover fell from KRW 15.6 trillion in May to a July level of 7.2tn, roughly halving. Retail speculative capital moved out of small KOSDAQ stocks into Samsung/SK hynix leveraged products. The KOSDAQ did not merely crash; it dried up.
08

A Crash Without Fear

Stocks fell 30%, yet crisis signals are absent
USD/KRW
1,438.64
7/1 1,554.9 → −7.5% / Won strength
VIX
19.09
Not in the panic zone (30+)
Bitcoin
64,823
1 month +10.70% — decoupled from stocks
MOVE
74.18
1 day +8.83% — Only bonds shake

FX is the strongest evidence. USD/KRW was KRW 1,554.9 on July 1, its highest since March 2009. Today it is KRW 1,438.64. While the KOSPI collapsed −34%, the won appreciated 7.5%. In the Asian and global financial crises, the won fell sharply as capital left. Today's direction is exactly the opposite.

Crypto says the same. In July, as stocks collapsed, Bitcoin rose +10.7% and Ethereum +22.4%. It did not act as Nasdaq's high-beta counterpart as in the past. Even within crypto, ONDO, which handles tokenized government bonds and stocks, alone rose +57.8% over 3 months — even as Bitcoin fell −17.1% over the same period. Money did not flee risk; it moved toward assets that pay interest.

The market fears Interest rates . The US 30-year yield hit 5.21%, its highest since 2007. MOVE jumped +8.83% today, and three FOMC members dissented in favor of a hike. This is position liquidation, not a systemic crisis.

Outside the window, continued — the ceasefire lasted two days
The Red Sea gap that #04 described as "prices underreacting" is closing from the price side

Oil is recovering the −12% drop that followed Sunday's reports of a halt to attacks — last night, Iran declared the ceasefire over, and Brent returned to $87.5 → $92.1. This news also accounted for half of the Dow's worst session since April. The test left by #04 — whether traffic through Yanbu and Bab el-Mandeb holds up in the next weekly observation — remains in place. Rising oil also strengthens §08's conclusion, because oil fuels the interest-rate fear troubling the market.

09

The Three Investor Groups, and What Comes Next

Who bought and who sold — and when we can check
Foreign investors (KOSPI)
+KRW 1.3427tn
SK hynix alone: +KRW 582.7bn = 43%
retail investors
−KRW 1.4309tn
Unwinding what they bought in July
Pension funds
+380.2bn
KOSDAQ: -43.9bn
Pension funds, 7/1–24
+68.4bn
This year's first month of net buying

This is not "foreign versus domestic." Pension funds' No. 1 July net purchase was also SK hynix (+KRW 425.8bn), while they were net sellers of Samsung Electronics (−KRW 111.5bn). Foreign investors and pension funds bought semiconductors on the same side; retail investors stood opposite them. Pension funds fill KOSPI positions first not because they rule out KOSDAQ, but because KOSDAQ trading value is just 12% of KOSPI's: buying pushes prices up. It is a question of sequence.

KOSDAQ — three channels through which water could return
Having diagnosed a dried-up market in §07, we should also say where water could return from

① Trading money displaced by regulation. What dried out KOSDAQ was retail money cycling through single-stock leveraged products at KRW 5.4tn a day (§07). That game closes tomorrow (7/31) — minimum deposits, premium/discount controls, and financial firms' own restrictions. The government chose this "casino closure" over a rescue through a market stabilization fund. Paradoxically, it could channel that money back to its former habitat: small and mid-cap KOSDAQ stocks.
② Cash waiting on the sidelines. Investor deposits are KRW 109.6tn (+KRW 5.7tn / 5 days) — the money from sales has not left the market (§05). The trigger for re-entry is liquidation intensity turning lower through the numerator (liquidation) channel.
③ Foreign investors. 3 consecutive days of buying, totaling +KRW 643.6bn. Short balances have already shrunk −10.5% in July, using up the fuel for covering. If buying continues after balances stop falling, it is bargain buying.
Pension funds come last (see above). There are also three headwinds: the BOK's hiking stance, residual liquidation intensity of 1.058, and shattered retail sentiment. The test is whether KOSDAQ trading value (baseline KRW 7.2tn) and its share of trading value (17.5%) recover in the first two weeks of August. If water returns, returning money will come before new money.

The calendar ahead — when we can check

7/31 (Fri)
Takes effect · July close
KRW 30 million minimum deposit for single-stock leveraged products Cash only; securities are excluded. A sharp fall in margin loans or investor deposits after this date may reflect "regulation," rather than "sentiment"; reading it at face value would mislead. It is also the July close, when KOSDAQ's historical ranking for monthly losses becomes final — the gap from No. 1 is 0.5%p.
7/31 (Fri)
Decision at midday
Bank of Japan (BOJ) rate decision The yen at 163.7 is near a 40-year low, just short of the intervention watch zone (164–165). KRW per 100 JPY fell today to KRW 877. A hawkish surprise would bring both a sharp yen rebound and an unwind of the "weak-yen trade"; a hold would entrench the won–yen rate in the KRW 800 range. Alongside the won strength sustaining §08's "crash without fear," this is another variable.
8/1 (Sat)
09:00
Korea's July trade data The first window into whether semiconductor export prices reflect the CXMT shock.
8/4 (Tue)
08:00
Korea's July consumer prices The BOK already pivoted toward hikes on 7/16 (2.75%). High inflation would cement that stance.
8/7 (Fri)
21:30 KST
US July jobs report Will the case strengthen for the three FOMC members who dissented in favor of a hike?
8/19 (Wed)
Takes effect
Single-stock leveraged products: tighter premium/discount controls A follow-up to the 7/31 deposit measure. How the products themselves work will change.
8/26 (Wed)
Earnings
NVIDIA earnings — the single biggest variable in the AI narrative If the competitive landscape in memory triggered this decline, NVIDIA still controls the broader frame of that narrative.
8/27~29
Symposium
Jackson Hole The rudder for the rate path. What the market fears now is interest rates, not stocks (§08).

What the Next Report Will Test

1
Margin loans for 7/30 — released tomorrow
Did liquidation actually occur today? If KRW 6.82tn holds, intensity is confirmed at 1.058; if it falls, intensity falls with it. This is where the first numerator-driven decline will appear.
2
A 4th straight day of foreign KOSDAQ net buying, plus short balances
Whether net buying continues after short balances stop falling distinguishes short covering from bargain buying.
3
The US tonight — will Nasdaq close higher?
At this report's close, Nasdaq 100 futures were +1.48%; tonight's Microsoft and Meta earnings(the sustainability of AI infrastructure spending) will set the direction. If US stocks rebound while Korea alone falls, it is a domestic flow problem, confirming §07's diagnosis.

Boboo from Sky #05 · As of the Jul 30, 2026 (Thu) 15:30 close. Indices and flows: Korea Exchange (KRX) / Naver Finance; margin loans and investor deposits: Korea Financial Investment Association (KOFIA) freeSIS (T+1 release, as_of 2026-07-29). Overseas indices, exchange rates, and crypto: Yahoo Finance. Other sources are stated in the text.

What this report does not claim certainty about — the nature of foreign KOSDAQ buying (§04-③, short covering vs. bargain buying), observed margin loans for 7/30 (§05, released tomorrow), and KOSDAQ's July monthly-loss ranking (§02, provisional before the 7/31 close). These three remain unconfirmed. If the figures change, the next report will correct them.

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