When looking at Bitcoin news,
“How high it went”
“How many percent it dropped”
—these price-related stories inevitably stand out.
However, if you are looking at Bitcoin for the long term, there are figures you should check just as much as the price.
That is, “how much money is actually flowing into Bitcoin ETFs.”
This week, there was a major change in that figure.
◼️Approximately $2.39 billion in one week
During the week from September 21st to the 25th, approximately $2.39 billion in net funds flowed into U.S. spot Bitcoin ETFs.
This is the largest weekly net inflow since the start of 2026.
Simply calculating at 1 dollar = 150 yen,
that is a scale of
approximately 358.5 billion yen.
Moreover, there were fund inflows on all five of these business days.
◼️Approximately $1.16 billion into the industry leader, BlackRock
Looking at this inflow in more detail, it is reported that approximately $1.16 billion flowed into the spot Bitcoin ETF “IBIT” from BlackRock, one of the world’s largest asset management firms.
In other words, nearly half of the approximately $2.39 billion inflow into ETFs as a whole went to IBIT.
It is not just Bitcoin itself, but large amounts of money are moving through Bitcoin investment products provided by existing financial institutions.
This is a point I want to focus on for the long term.
◼️What is a Bitcoin ETF in the first place?
For beginners, I will explain it simply.
When purchasing Bitcoin, there is a method of buying it on a crypto asset exchange and managing it yourself.
On the other hand, a spot Bitcoin ETF is a financial product listed on the securities market.
Investors can have the opportunity to invest in the Bitcoin price through a securities account without having to store the Bitcoin itself.
In other words, I think it is easy to understand if you think of it as one of the “gateways” connecting Bitcoin to the traditional financial market.
◼️It is also connected to yesterday’s news
Yesterday, I introduced that the cumulative 2026 fund flow for U.S. spot Bitcoin ETFs had recovered from
as of July 13th
a net outflow of approximately $5.8 billion
↓
as of September 25th
to a net inflow of approximately $800 million.
One of the things that supported this major reversal is this week’s inflow of approximately $2.39 billion.
In other words,
it is not just that “a large amount of money came in on a certain day.”
There is a trend where funds that left Bitcoin ETFs in the first half of this year have been returning over the following months.
◼️
However, there are also figures to be cautious aboutFrom here, let’s look at the numbers calmly. The net ETF inflow on September 21st was approximately $999 million.
On the other hand, it decreased to approximately $134 million on September 25th.
In other words,
it is not the case that “fund inflows are increasing more and more every day.”
Rather, this week, a very large amount of funds came in at the beginning of the week, and the inflow amount decreased afterward.
It is important to look at this part as well.
◼️
Fund inflows into ETFs do not equal price increases
This is also very important. Just because $2.4 billion entered the ETFs, it cannot be said that “Bitcoin will definitely go up from here.”
Bitcoin’s price is influenced by various factors such as:
interest rates,
the dollar exchange rate,
the global economy,
geopolitical risks,
selling by long-term holders,
and the derivatives market.
In fact, Bitcoin was trading around $84,000 at one point on September 26th, down from the $87,000 range it hit mid-week.
In other words,
funds entering ETFs
=
Bitcoin price rising immediately
is not a simple relationship.
◼️
What I am paying attention to
From here is my perspective.
What I think is important is not just the figure of $2.39 billion entering in one week itself. It is that a mechanism has been created where Bitcoin is treated as an “investable asset” within the existing financial market, and billions of dollars are actually moving through that gateway. Until a few years ago, it was common to use crypto asset exchanges to buy Bitcoin. Now, you can access Bitcoin from the existing securities market in the form of an ETF.
I think this is a major change in the environment surrounding Bitcoin.
◼️
What is important is to look at years, not weeks
Funds into ETFs will naturally continue to have
weeks where they enter and weeks where they leave. Bitcoin prices will also go up and down. That is why,
rather than the mindset of “buying because $2.4 billion came in this week” or “selling because it flowed out next week,”
I think it is important to look at how the financial environment surrounding Bitcoin is changing over a period of several years.
Spot ETFs.
The entry of banks and financial institutions.
The development of systems for stablecoins.
The clarification of regulations regarding crypto assets.
I want to look at each of these changes over a long time axis.
◼️
We will accumulate steadily
No one can accurately predict the future price of Bitcoin.
That is why I:
Do not invest money necessary for living.
Decide on an amount that is comfortable.
Do not panic when the price goes up.
Do not panic when the price goes down. And I steadily accumulate Bitcoin. Rather than short-term price movements, I want to continue asset formation that makes time an ally while watching the changes in the environment surrounding Bitcoin. ◼️
Source
The Block