Altcoin deposits to exchanges hit 2025 high

TLDR

Altcoin deposits to centralized exchanges have surged to their highest levels since October 2025, pointing to growing readiness among holders to take profits or de-risk.

1. A recent CryptoQuant weekly report shows seven?day altcoin deposit transactions jumping about 160% to around 78,000, with depositing addresses nearly tripling and broadly spread across wallets.
2. This spike in sell?ready supply comes after a phase of altcoin outperformance, alongside cooling spot and futures demand for Bitcoin (BTC), which together raise the odds of a near?term market correction.
3. Key signals to watch now are exchange net flows, the altcoin to Bitcoin spot volume ratio, BTC dominance and major BTC support levels, which will show whether this turns into sustained risk?off behavior.

Deep Dive

1. Altcoin Inflows Magnitude

CryptoQuants latest weekly report finds that the seven?day total of altcoin deposit transactions reached about 78,000 on 28 September, up from roughly 29,800 two weeks earlier, a 160% surge and the highest reading since October 2025. The number of unique addresses sending altcoins to exchanges climbed from around 17,600 to 51,600 over the same period, also the highest since late 2025 and described as broad based across many wallets rather than a few whales in a CryptoQuant weekly report.

Altcoins outside the top 10 by market cap now account for about 9% of total crypto value, their highest share since February, and BTC dominance sits just under 60%, reflecting that this deposit spike is happening into an already expanded altcoin footprint.

2. Selling Pressure And Positioning

Analysts note that when coins move from private wallets to exchanges, holders are usually preparing to sell, so a jump in deposits is often a precursor to profit taking. At the same time, BTC spot demand has contracted by roughly 170,000 BTC over the past month, and futures demand growth has slowed sharply, according to CryptoQuants research head in a recent analysis.

Glassnode adds that altcoin spot volume has risen to nearly four times Bitcoins, the highest ratio since September 2025, a pattern it associates with local BTC tops in a Glassnode report. Together, elevated altcoin deposits and outsized altcoin volumes suggest many traders are rotating out of recent winners or hedging exposure rather than adding fresh long risk.

3. Signals To Watch Next

On the structural side, perpetual futures open interest has risen about 6% over the last day while altcoin market cap is roughly flat, indicating more leveraged activity without clear net new spot demand. CryptoQuant points to BTC support zones near 80,000, 71,000 and 67,000 dollars; how price reacts around these levels if selling accelerates will help distinguish a healthy pullback from a deeper trend break.

For altcoins, the most informative signals to watch are:

1. Exchange net flows (whether deposits are matched by withdrawals or translate into net outflows).
2. Changes in BTC dominance around the current 58 to 59 percent band.
3. The altcoin to BTC spot volume ratio and whether it stays extreme or mean?reverts.

Confidence: high because multiple independent analytics firms report consistent flow and demand patterns.

Conclusion

Altcoin deposits hitting their highest level since 2025 tell a clear story of holders moving into sell?ready positions after a period of strong altcoin performance and thinning BTC demand. Whether this turns into a sharp correction or a contained consolidation will depend on how exchange flows, BTC support levels and the altcoin volume profile evolve over the coming sessions. For crypto users, this is a moment to pay closer attention to flow and dominance metrics rather than assuming that recent altcoin strength will continue unchecked.