TL;DR
· On the morning of September 22, Bitcoin surged past $87,000, rising rapidly from around $81,000 to reach a new high since January this year.
· This market rally was not driven by a single catalyst. The recovery in risk appetite following the Fed's rate hikes, the re-entry of ETF funds, and the large-scale short liquidations triggered after breaking through $82,000 collectively propelled BTC higher.
· A short squeeze explains not just “why it’s rising,” but also “why it’s rising faster”: After BTC broke through $82,000, $84,000, and $85,000 in succession, it continuously entered new short liquidation zones, creating a positive feedback loop of forced buying.
· The U.S. spot Bitcoin ETFs saw a combined inflow of approximately $593 million over the past two trading days, indicating that the market movement is not entirely driven by derivatives leverage.
·But after a large number of short positions have been liquidated, the key question for the next phase has become: How many genuine spot buyers are willing to continue chasing the price beyond $87,000?

From September 21 to 22, Bitcoin experienced a long-awaited rapid rally.

BTC first broke through the $82,000 to $83,000 range that had repeatedly pressured its price, then quickly rose above $84,000 and further surpassed $85,000 as the momentum continued. By early September 22, Bitcoin had briefly exceeded $87,000, posting a 24-hour gain of over 7%.

This also means that interpreting this market cycle merely as "BTC breaking above $84,000" is already somewhat behind the curve.

The real question worth explaining becomes: Why, after BTC broke through a key resistance level, did it not quickly retrace but instead accelerate from $82,000 to $87,000?

The answer is not a single positive factor.

Looking at the past several trading days together, this rally has followed a fairly typical three-phase process: improved macro expectations → spot capital inflow → large-scale short squeeze triggered after breaking key price levels.

In the latter part of the market movement, the third force began to play an increasingly important role.

The Fed's interest rate hike became the first catalyst for the market rally.

The first layer of change comes from the macro market.

The Federal Reserve previously raised rates by 25 basis points, but the subsequent rate path was less hawkish than markets had feared. CryptoTicker believes this instead boosted risk assets, strengthening Bitcoin; at the time, over $445 million in crypto short positions were liquidated, including over $230 million in Bitcoin shorts.

What matters most here is not "why rate hikes are bullish for Bitcoin," but the expectation gap.

What is traded in the market is never just the rate hike itself, but whether the actual policy is more hawkish or more dovish than previously priced in.

When investors had previously prepared for a more aggressive tightening path, but the final policy signals turned out to be less hawkish, risk appetite was instead restored.

Bitcoin has now returned above $80,000. However, macro factors can only explain why buying pressure began to recover; they cannot explain why BTC subsequently surged through $82,000, $84,000, and even $87,000 within hours.

What truly caused the market to accelerate upward was the derivatives market.

$84,000 is just the first liquidation zone

Before this market move, the area around $84,000 to $85,000 was already identified by the market as a dense zone for short liquidations.

The derivatives analysis on September 18 showed a significant short liquidation zone between $84,000 and $85,000 while BTC was trading around $78,300, with $82,300 serving as the key upper boundary of the previous 30-day trading range.

So, after BTC broke above $82,000, a classic short squeeze began: price rise → shorts approaching liquidation → forced buying to cover positions → BTC continues rising → more shorts get liquidated.

This is why the price didn't slowly rise from $82,000 to $84,000, but instead accelerated rapidly after the breakout.

When BTC first broke above $84,000, TECHi recorded approximately $252 million in short positions liquidated in a short period. But looking back now, $84,000 clearly wasn’t the end of this squeeze.

As BTC continues to break above $85,000, liquidation volumes have further escalated. According to The Block, citing CoinGlass data, over $750 million in positions across the market were liquidated in the past 24 hours as of its September 21 report, with $648.3 million of those being short positions. BTC then continued to surge past $87,000.

This means that one of the most notable characteristics of this market cycle is that the short squeeze does not occur all at once, but rather intensifies progressively as the price breaks through different resistance levels.

Those who shorted $84,000 were liquidated, and the price continued to rise; short positions at higher levels then entered the danger zone, becoming the next group forced to buy.

This is also a key reason why BTC rapidly evolved from a single "breakout" into a vertical surge in a short time.

But this time, it wasn't just the shorts buying BTC themselves.

The issue is that if the rally stems entirely from a short squeeze, then the market movement inherently has a flaw:

There will always come a time when all short positions are liquidated. Each time a short position is liquidated, it consumes one future forced buyer.

Therefore, to determine whether this market move is merely a sharp position squeeze or could evolve into a more sustained rally, the most important factor is whether genuine spot capital follows through.

At least some indications suggest that the answer is yes.

U.S. spot Bitcoin ETFs recorded a combined net inflow of approximately $592.5 million on Thursday and Friday. On September 18 alone, inflows reached $433 million, with Fidelity’s FBTC attracting $310.7 million and BlackRock’s IBIT attracting $108.4 million.

CryptoTicker also noted that funding rates remained relatively low at the time, with no significant leverage overheating accompanying the price rise, suggesting this rally was not solely driven by the derivatives market.

Another change is particularly worth noting.

BTC has now risen back above the average cost region of approximately $82,000 for U.S. spot Bitcoin ETF investors. This means that some ETF holders who were previously in a floating loss have now returned to profitability.

In other words, starting from the breakout above $82,000, this rally is not only liquidating short positions but also improving the holding structure of previously trapped spot capital.

This may be one of the key reasons why BTC did not immediately face significant selling pressure after breaking above $84,000 and was able to continue rising.

After rising from $82,000 to $87,000, the question has changed.

So, looking at this market cycle now, $84,000 is no longer the most important price—it’s merely an intermediate point in the acceleration of this short squeeze.

The real change that occurred is: Bitcoin first broke through the resistance range of $82,000 to $83,000 that had persisted for weeks, then surged past the concentrated liquidation zone between $84,000 and $85,000, and continued rising above $87,000.

Within a short market movement, technical breakthroughs, short positions being stopped out, and forced liquidations keep piling up.

But as BTC rises further, a question becomes increasingly important: who will continue buying after the forced buying ends?

If ETFs continue to experience steady net inflows, and funding rates and open interest do not rapidly escalate due to chasing capital, this rally may begin transitioning from a "short squeeze" to a true trend driven by spot market funds.

Conversely, if the price continues to rise but ETF buying begins to weaken, while open interest and funding rates rise rapidly, the market's momentum may shift back from spot to leverage.

At this moment, the faster the price rises, the more caution is needed regarding the crowded trade on the other side.

Therefore, after BTC has broken through $87,000, the market’s next focus should not be solely on “whether it can reach $90,000.”

More importantly, watch three things: whether ETF funds continue to flow in, whether leverage is rapidly increasing, and whether the previously broken range of $82,000 to $85,000 can truly act as support during a pullback.

From $82,000 to $87,000, this rally has proven that a short squeeze can turn an ordinary breakout into a vertical surge.

But above $87,000, what the market needs to prove is something else: whether there are still enough people willing to buy主动ly once fewer people are forced to buy.

Click to learn about the open positions at BlockBeats

Welcome to the official BlockBeats community:

Telegram subscription group: https://t.me/theblockbeats

Telegram group: https://t.me/BlockBeats_App

Official Twitter account: https://twitter.com/BlockBeatsAsia