On October 2, Hong Kong stocks fell by 640.98 points.
The Hang Seng Index closed at 23,972.29 points, down 2.60%.
This is the first time the Hang Seng Index has closed below 24,000 points in more than two and a half months.
At one point during the session, it fell by nearly 750 points at most, and the low reached 23,865 points.
If you line up the calendar, you’ll understand the weight of this matter.
A-shares were closed from October 1 to October 7, and only reopened on October 8.
That is to say, throughout the entire holiday, the only place where Chinese assets are priced is Hong Kong stocks.
And the answer it gave was down 2.6%.
1. What fell that day, and what rose
Let’s start with the losers.
Financial stocks were hit hardest.
HSBC Holdings fell 5.38%, closing at HK$149.5.
It was the biggest drag on the index.
AIA fell 5.98%, making it the worst-performing blue chip of the day.
Standard Chartered fell 5.97%, joining HSBC in a decline of more than 5%.
Among Chinese financial stocks, Guotai Haitong fell 6.25%.
Even Hong Kong Exchanges and Clearing itself fell 3.09%.
Tech stocks weren’t spared either.
The Hang Seng TECH Index fell 2.26%, closing at 4,157.94.
Tencent fell 2.27%, closing at HK$421.2.
Bilibili fell 4.60%, and Kuaishou fell 4.65%.
What’s really worth remembering about that day, though, are a few other names.
GDS fell 8.88%, making it one of the day’s biggest individual-stock losers.
Iluvatar CoreX fell 6.60%; it is also part of the computing-chip supply chain.
Li Auto fell 5.37%, and China Eastern Airlines fell 5.32%.
That’s why the hardest-hit assets were data centers and computing-power stocks, which rely most heavily on financing.
Now look at the gainers—the direction was exactly the opposite.
ASMPT rose 8.12%, making it one of the day’s biggest individual-stock gainers.
Seres rose 6.44%, on the back of a new five-year partnership with Huawei.
COSCO Shipping Energy Transportation rose 4.70%, and oil shipping stocks broadly gained that day.
Semiconductor equipment, automakers with event-driven catalysts, and oil shipping.
On the same day, in the same market, money moved from high-valuation, asset-heavy stocks to those with cash flow.
II. Why this particular day?
The first reason is straightforward, and rarely explained clearly.
Among the world’s major markets, Hong Kong is the only one that directly imports the US interest-rate cycle.
Because the Hong Kong dollar is pegged, Hong Kong interest rates have to follow the US dollar.
When long-term US rates rise, Hong Kong’s financing costs rise with them.
Banks and insurers are bearing the brunt on their balance sheets.
So what fell that day wasn’t “the Chinese economy,” but “Hong Kong’s US-dollar interest rates.”
Elevated bond yields in Europe and the US weighed directly on financial stocks.
The second reason was the holiday itself.
With A-shares closed, southbound buying was absent.
The usual buyer who absorbs selling wasn’t there, so the same sell orders dug a deeper hole.
So this isn’t a change in fundamentals; it’s one fewer buyer.
One detail is enough to confirm this.
From October 2 to October 3, there were two additional trading days for Stock Connect.
This shows the channel itself hasn’t closed; mainland investors are simply on holiday.
The third reason is hidden behind the data.
Looking at the full week, Hong Kong stocks had only four trading days.
It fell 538 points over the week, a decline of about 2.2%.
It fell 2.6% in a single day, but only 2.2% for the week.
This shows that sentiment was released all at once that day; it wasn’t an acceleration of the trend.
III. But there is one piece of genuinely bad news
All three points above are saying, “Don’t panic.”
The next point doesn’t fit this line of reasoning.
The Hang Seng TECH Index hit a new intraday low of 4,111 on October 2.
The decline year to date is already close to 25%.
Over the past year, the cumulative decline is approaching 40%.
Because interest rates alone can’t explain a move of this magnitude.
Interest rates can compress valuations, but they can’t knock an entire sector down 40%.
So part of the decline in tech stocks comes down to issues of their own.
Reports say Tencent has signed its largest overseas lease agreement with Oracle.
The deal covers around 100,000 advanced AI chips, is valued at about $7 billion, and requires roughly a 30% down payment.
Yet the news failed to lift the stock price that day.
That’s what a valuation reset looks like: good news comes out, but the price doesn’t respond.
IV. Three more holiday developments will all be priced in on October 8
First, long-term global interest rates moved up another notch.
At the close on October 2, the US 10-year Treasury yield stood at 5.28%.
It hit an intraday high of 5.342%, the highest since early 2002.
For A-shares, the implications vary by sector.
The short end follows policy, while the long end follows inflation and supply. Right now, they’re moving in different directions.
Second, the jobs data took the urgency out of rate hikes.
September nonfarm payrolls rose by just 29,000, far below expectations.
Market pricing for an October rate hike fell to 22.7%.
That’s a net positive for A-shares: external liquidity pressures ease, and pressure on the renminbi also lessens.
Third, policy has taken control of the oil-price story.
The G7 decided to release 100 million barrels from reserves through the International Energy Agency over four months, with diesel supplies concentrated in the first 20 days.
Brent is currently around $102 a barrel.
Along this theme, the losers and winners are clearly separated.
Refining margins will come under pressure, while shipping and airlines will get some relief on the cost side.
V. The discipline to follow
First, don’t extrapolate Hong Kong stocks’ 2.6% drop directly into a catch-up decline for A-shares.
Its components include interest-rate transmission through the linked exchange rate, and a liquidity discount caused by the absence of southbound flows.
Because both of these will change on October 8.
Second, watch the US Dollar Index and the long end of US Treasuries, not the Hang Seng Index’s absolute level.
Because whether the Hang Seng Index breaks below 24,000 is an outcome, not a cause.
The reason lies in the slopes of those two curves overseas.
Third, look at the direction of sectors, not just whether the index is up or down.
The divergence within Hong Kong stocks that day was far more informative than the index itself.
High-valuation, asset-heavy assets reliant on financing are falling.
Assets with cash flow, event-driven catalysts, or lower costs are rising.
Fourth, a gap-up on the first day after a holiday is often catch-up, not a trend.
So everything that happened over the holiday will be priced in all at once during the first hour of trading.
Decisions made in that one hour are usually the most expensive.
Write down the three numbers to watch: whether the US 10-year yield is above 5.3%, whether the US Dollar Index continues to strengthen, and whether southbound funds are net buyers or net sellers on their first day back.
These three numbers tell you more about the direction of travel than the Hang Seng Index level does.
——MK keeps their word
