Behind the $1.47 billion inflow into the Bitcoin ETF: Is this a turning point in the institutional wave or the beginning of structural differentiation?

I. A strong signal that was misinterpreted

In March 2026, the Bitcoin ETF recorded a net inflow of $1.47 billion within two weeks.

In absolute terms, this is undoubtedly a positive signal. However, when placed within a more complete timeframe, another set of data is more noteworthy:

Net inflows in February: $3.3 billion
Net inflows in March: $890 million
Month-on-month decrease: 73%

at the same time:

ETF bid-ask spread widened to 8.5 basis points.
Market making depth decreased
Marginal contraction of liquidity

This means that the market has not stopped receiving funds, but rather has entered a phase of marginal slowdown in funding.

CoinFound judgment:

The current situation is not the peak of institutionalization, but rather a critical juncture where the internal structure of the institutionalization process begins to differentiate.

II. IBIT Monopoly Structure: Single Product Dominates Market Growth

A set of data from March 11, 2026, reveals the true structure of the ETF market:

IBIT daily inflow: $115.5 million
Total market inflows: US$115.4 million

IBIT absorbed over 100% of the market's net inflows, while the remaining ETFs collectively experienced net outflows.

On the surface, the market is comprised of 11 funds, but in reality, incremental funds are highly concentrated in a single product.

Current IBIT:

Holding approximately 777,000 BTC
AUM exceeds $54 billion
Market share of approximately 56%

This structure has three main effects:

First, competing funds are becoming marginalized. Insufficient size and liquidity weaken their ability to absorb investment, further reinforcing the concentration of funds in leading companies.

Second, the risk of individual points is amplified. Once IBIT's fundraising pace slows down, the market lacks alternative sources of support.

Third, the price discovery mechanism is distorted. Institutional price signals for BTC increasingly reflect a single channel rather than distributed demand.

CoinFound believes that IBIT’s dominance provides stability in the short term, but may become a source of structural risk in the long term.

III. Tokenized Treasury Bills: A True Competitor to ETFs

The slowdown in ETF inflows does not mean that funds are withdrawing, but rather that a shift in investment path has occurred.

Data from the same period:

BlackRock builds saw net inflows of approximately $7.2 billion.
Franklin OnChain money market fund has approximately $5.6 billion.

Funds are flowing into tokenized treasury bills.

Its appeal comes from three aspects:

First, the certainty of a return of approximately 4.8% is a significant advantage in a high-interest-rate environment.

Second, it has lower volatility, which meets the risk management needs of institutions.

Third, on-chain settlement and composability improve capital efficiency.

This change means that the Bitcoin ETF is competing with tokenized treasury bonds for the same pool of institutional funds.

CoinFound believes that the key variable limiting the ceiling of ETFs is no longer market perception, but the existence of alternative assets.

IV. MSBT: Channel Restructuring Rather Than Demand Expansion

Morgan Stanley's launch of MSBT is seen by the market as a further acceleration of its institutionalization process.

However, judging from its capital structure, it is more likely a channel restructuring:

Morgan Stanley manages approximately $4.8 trillion in assets.
A large number of customers have already held BTC through IBIT

The main purpose of MSBT is to migrate existing configurations to its own channel system, rather than to introduce new funds.

Historically, the development path of gold ETFs shows that later-developed products have led to more share redistribution than demand expansion.

Therefore, the effects of MSBT should be broken down as follows:

Short-term: Emotion-driven; Medium-term: Channel diversification; Long-term: Structural optimization

V. The Stages of ETF Narrative Shift

The original logic of the market is:

ETF growth = institutional entry = demand expansion

However, the current structure indicates that:

ETFs are a channel, not the demand itself.

Three major changes are currently underway:

Concentration increases
Inflow rate decreases
Funding Path Diversion

The Bitcoin ETF is transitioning from a growth phase to a structural optimization phase.

VI. Scenario Analysis

Baseline scenario (60%):

MSBT Approved
Advancing the CLARITY Act
Monthly inflows rebound

Results: Market structure improved, with ETFs and RWAs developing in parallel.

Risk scenario (40%):

Approval delay
High interest rates continue
RWA's appeal has increased.

Result: ETF inflows contracted further, putting downward pressure on prices.

VII. CoinFound's Core Conclusions

The core issue facing Bitcoin ETFs is not whether funds will enter, but how the funding structure will change.

The market is shifting from a phase of overall expansion to a phase of structural competition.

The key variable that will determine the future cap of ETFs will be:

Channel competition landscape
Institutional asset allocation logic
attractiveness of alternative assets

Original link

https://x.com/CoinfoundGroup/status/2037003177716076802?s=20