Let’s start with the conclusion: this vertical rally from 82,000 to 87,363 was not driven by sentiment—it was a planned “blow-up.”
On Monday, BTC briefly touched $87,363, the highest since January. Many people think it was “market sentiment improving.” No.
What truly pulled the price from 81,146 to 87,363 was a precise composite mechanism of an “expectations gap + leveraged liquidations.”
Layer one: when the rate hike was delivered, it turned out to be a positive
On September 16, the Federal Reserve raised rates by 25 basis points to 3.75%-4.00%. First time in three years.
According to textbook logic, a rate hike is bearish for risk assets. In that 2022 round, BTC fell from 41,000 to 15,800, a full-year halving.
But this time is different.
A one-off 25-basis-point move isn’t the kind of aggressive tightening of 75 basis points in a row. More importantly, the market had already psychologically prepared for an even more aggressive path. What actually happened was milder than expected—and that became a catalyst.
Bad news is used up, so it becomes good news. It’s an old saying, but it always works.
Second layer: the ETF’s “ammunition”—this is the real hard support.
On September 21, U.S. spot Bitcoin ETFs saw a daily net inflow of $999 million, a new 2026 high and the largest scale since October 2025.
BlackRock’s IBIT contributed $381 million, ARKB contributed $289 million, and FBTC contributed $239 million.
The three combined account for 91%.
Total ETF assets returned to $110.1 billion, with cumulative net inflows of 56.16 billion.
This isn’t emotion—it’s real money.
Also, here’s a detail most people overlook: when BTC rose to $85,900, it broke above the ETF average cost basis at $81,722—U.S. spot ETF holders, for the first time since January, were all out of the bind.
People who had been underwater for half a year finally got back to breakeven.
Third layer: shorts—turning into the best fuel.
The 84,000–85,000 range has been stacked with shorts for a long time.
After the price broke above 82,000, a step-by-step loop of “breakout → liquidation → further breakout → further liquidation” kicked off.
Within 24 hours, more than $1 billion in short positions were force-liquidated.
Alphractal’s CEO said: During the earlier downswing, leveraged longs had already been cleared out first. This current upswing has also triggered a concentrated liquidation of shorts. The derivatives positioning structure has been completely reshaped.
Put it in plain terms: shorts have been buried alive—their stop orders become fuel for the upside.
A senior analyst at Nansen said a very key line:
“A BTC breakout above $84,000 doesn’t look like a clean macro-driven initial positioning so much as a combination of renewed ETF demand and a large-scale short squeeze. The key difference is this—the speed at which price turns bullish is faster than the speed at which positions adjust.”
What does that mean?
A short squeeze is borrowed time.
Each time a short gets liquidated, it consumes one future forced buyer. The problem now is: the shorts are all blown out—who will take over next?
If ETF inflows weaken, or if U.S. Treasury yields spike again, this rally could reverse at any time.
One more detail worth watching: the Coinbase premium turned negative for a while. After U.S. spot demand surged in the initial phase, there were signs of a pullback.
So what, exactly, should you watch?
Look at just one thing: can IBIT, ARKB, and FBTC maintain a daily inflow scale of nearly $1 billion?
If it can be sustained, demand is independent. This round of market action has fundamental support—$90,000 is just a matter of time.
If that doesn’t hold, this becomes a glorious short covering—once the shorts are dead, the rally is over.
Short squeeze tells you why the market is moving “so fast.”
ETF inflows tell you whether the trend can go “far.”