2026-09-21 ｜ In-depth Interpretation ｜ Written by: Misty Rain

Everyone is watching whether BTC can break 82,000. But there is one number that quietly reached a six-month high, and almost no one mentioned it: ETH soared to a maximum of $2,709.91 this morning, marking a six-month high since March 2026.

BTC has been flat from 81,953 on September 18 to now 81,200 for three days; ETH has increased from 2,400 on September 18 to 2,709 this morning, rising by 13% over three days. Both are mainstream coins, so why is the difference so significant? Today's article will not discuss K-lines but will tackle a larger question: In this market trend, are institutions buying BTC or ETH?

01 First, let’s look at a set of overlooked data: ETH hits a six-month high

Let us pull out the timeline:

• On September 16, the day BTC dropped to 74,896, ETH's lowest was 2,356 — bottoming simultaneously with BTC;

• On September 18, BTC V-shaped rebounded to 81,953, while ETH rose from 2,356 to 2,600;

• On September 21 this morning, ETH hit a peak of 2,709.91 — this is the highest level since March 2026, a six-month high;

• And what about BTC? From 81,953 on September 18 to now 81,200, it has been flat for three days, not even touching 82,000.

According to Coinbase Pro data: ETH/USD reported $2,674.19 this morning, up 1.06% in 24 hours, with a trading volume of $184 million. AiCoin Research Institute made a very straightforward remark: "After a price hits a new high, there’s a high probability of a price pullback." But note — this is a "pullback," not a "reversal." The ability of ETH to hit a six-month high indicates that funds are actively pushing.

02 BTC is still stuck at 82,000 while ETH has already reached 2,700 — where is the gap?

Why is ETH suddenly performing better than BTC? Three reasons:

First, BTC's 82,000 is a "hard ceiling," while ETH's 2,700 is a "new starting point." BTC soared to 82,285 at the beginning of September and then got hammered back; on September 18, it surged to 81,953 and was hammered down again. The 82,000 level has trapped at least two batches of investors. And what about ETH? 2,700 is a six-month high, with no historical overhead resistance — it's easier to rise and easier to fall, so funds will naturally push the lighter option.

Second, L2 ecosystem is gaining momentum. The Ethereum development team is currently promoting Layer 2 cost optimization, with ongoing increases in the activity of Arbitrum and Optimism. BTC has no new stories beyond "digital gold"; ETH has L2, DeFi, NFTs, and stablecoins — the narratives are richer than BTC, providing greater elasticity than BTC.

Third, market value structure. BTC currently accounts for 59% of the total cryptocurrency market value, with ETH's share gradually recovering. When BTC's market value is too large and it struggles to rise, funds will flow to ETH, which has a smaller market value and greater elasticity — this is an old rule in the crypto space, "when the big pie is flat, the smaller pie absorbs it."

03 Who are institutions buying? Saylor + BlackRock + Metaplanet + Strive simultaneously increase holdings

But don’t get it wrong — ETH's sharp rise does not mean institutions are not increasing their BTC holdings. There is a very key point in today’s AIcoin snapshot: Michael Saylor, BlackRock, Metaplanet, and Strive are all simultaneously increasing their holdings in Bitcoin.

Who are these four entities? Saylor is the largest institutional bull for BTC, BlackRock is the world's largest asset manager, Metaplanet is Japan's version of "little Saylor," and Strive is a newly established BTC ETF issuer in the United States. These four groups, from the US to Japan, from public offerings to corporate holdings, are all buying BTC.

So the real picture is: institutions are buying BTC, while retail and short-term funds are grabbing ETH. This is not an either-or situation — BTC is the institutional base asset, while ETH is the retail elastic asset. BTC must stabilize at 80,000 for ETH to soar to 2,700; if BTC falls below 78,000, ETH will be the first to get hammered.

04 Two new variables: China reduces US debt to an 18-year low + China-US economic and trade consultations

After discussing the crypto market, let’s talk macro. Today there are two new variables that are more important than ETH reaching a new high:

First: China’s holdings of US debt have fallen to $618 billion, the lowest level in 18 years. I mentioned yesterday that "China sold 15.4 billion," and now this trend is more long-term — the lowest level in 18 years. This means: the world’s two largest holders of US debt (China + Japan), one is selling, and the other is refusing to take over. US Treasury yields breaking 5% is not a problem for the Federal Reserve; it’s a problem for the US Treasury.

Second: The economic and trade teams of China and the US held consultations in New York. This news came on September 20. Easing geopolitical tensions is a good thing for risk assets — if China and the US do not engage in a trade war, the global capital risk appetite will not collapse. The ability of BTC and ETH to hold this week is directly related to this news.

Furthermore, with Kashkari's latest statement today: "Inflation is still too high and not solely caused by oil prices; the Federal Reserve must bring inflation back to the 2% target." Hawks are still making statements, but the market is already ignoring them — this is a classic manifestation of "bad news has been fully priced in."

05 Hacker stole 100 million, why didn’t the market react?

There is another big news today: North Korean hacker group WaterPlum infected 30,000 devices, stealing $10.7 million in crypto assets; another North Korean organization disguised as recruitment stole $107 million.

According to normal logic, this kind of news should lead to a market crash. But what was the market's reaction? BTC continues to rise, and ETH hits new highs. Why? Because the hackers stole from retail wallets, not from the exchange's cold wallets. As long as the hot wallets of Coinbase and Binance are not compromised, this kind of "distributed retail theft" has almost no impact on the overall market liquidity. Such incidents have happened dozens of times since 2024, and the market is already immune.

The real threat is not the hackers, but exchanges being hacked — that’s the systemic risk.

06 My Judgment: Second coin temporarily stronger than first coin, but don’t chase the high

Let’s connect all the clues:

• BTC: 81,200, 82,088 is short-term resistance, and 80,100 is short-term support. Breakthrough at 82,300 (previous high 82,285), targets 84,000; if it can’t get through, it will be in the 80,000-82,000 range;

• ETH: 2,655, 2,709 is the six-month high. AiCoin Research Institute states that "after hitting a new high, a price pullback is likely," which I agree with — 2,600 is the first support level, 2,550 is strong support. A pullback to around 2,600 is an opportunity, while chasing above 2,700 poses risks.

Three final remarks:

• For those who already hold BTC: Don’t chase ETH to change positions, the base value of BTC is what institutions provide, it won’t drop much;

• For those who already hold ETH: Don’t increase positions above 2,700; consider adding only if it pulls back to around 2,600;

• For those who haven’t entered yet: Don’t rush. Wait for BTC to confirm a breakthrough at 82,300, and for ETH to pull back adequately to 2,600 — chasing highs is the fastest way to lose money.

Finally, one last note: ETH hitting a new high is not because ETH itself has become stronger, but because BTC's stagnation has pushed the funds over. Once BTC chooses a direction — whether it breaks above 82,300 or falls below 79,000 — ETH will follow and likely more aggressively. So don't be fooled by ETH's short-term strength, the real steering wheel is in BTC's hands.

The above content is based on a logical interpretation of public market conditions and insights, for reference only, and does not constitute any investment advice. The cryptocurrency market is highly volatile, and leverage amplifies risks; please make rational judgments and pay attention to risks.

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