According to Coinalyze data cited by Crypto Briefing, altcoin perpetual open interest has surpassed Bitcoin's for the first time since December 2024 on September 6, reflecting increased leveraged trading as Zcash and the wider altcoin market rallied. Bitcoin's aggregate open interest stood near $25 billion on September 7, with perpetual contracts accounting for approximately $23.9 billion and dated futures representing about $1.2 billion. Bitcoin held around 37% of the perpetual open-interest market tracked by the platform, while the combined altcoin share therefore exceeded Bitcoin's share, although the altcoin category combines positions across many different assets. This shift points to a rapid influx of leveraged money into the altcoin market, sharpening focus on the risk of large-scale liquidations. As reported by Crypto.news, when leverage crowds into smaller, thinner corners of the market, it tends to raise the odds of sharp, disorderly corrections that can drag bitcoin with it even when bitcoin itself wasn't the source of the froth.
As reported by Crypto.news, Zcash became one of the clearest examples of rising altcoin leverage, with ZEC futures open interest climbing to approximately $2.4 billion earlier this month as the privacy token moved above $1,000 in early September. ZEC rose about 20% on September 4 and reached an intraday high near $1,023, with the advance liquidating approximately $34 million in leveraged positions, including about $34.5 million held by short sellers. The token continued climbing, trading near $1,192 on September 7, up approximately 11% during the latest session, with prices ranging between roughly $1,074 and $1,249. Leverage was particularly concentrated in Zcash, with open interest reaching a record $2.4 billion earlier this month as the token's price rose past $1,000. The rally has drawn extra attention as Grayscale files to convert its ZEC trust into a spot ETF, adding a new demand angle even as leverage climbs.
According to Crypto.news, the combined market capitalization of altcoins outside the top 10 has exceeded $200 billion and has risen more than 10% this month, gaining more than 10% from the beginning of the month. This increase suggests that rising derivatives activity occurred alongside higher spot valuations rather than entirely within futures markets. Bitcoin, by comparison, has traded above $80,000 over the same period, with the cryptocurrency trading near $79,575 on September 7, down approximately 0.4% during the latest session, with its intraday range extending from roughly $79,460 to $80,494. The altcoin market strength in both derivatives and spot markets makes it a key variable whether the ratio of open interest to market capitalization continues to climb.
Bitcoin's price action has been supported by strong institutional demand, with ETF inflows hitting a nine-month high on Thursday, pulling in close to $1 billion in a single session - the strongest since January. As reported by Crypto.news, the flows have been steady enough to act like a floor rather than a spike, with one entry showing $277.6 million landing in BlackRock's IBIT alone on August 27. This mechanical, repeatable demand structure has quietly become the dominant channel carrying money into bitcoin, changing how the price behaves with shallower drawdowns and faster recoveries. The clearest bid under the market remains $82,000, which Bitcoin has now failed to hold above twice in a week, with the ETF desks getting their next read on demand when U.S. markets reopen.
Neoclassic Capital Co-Founder and Managing Partner Michael Bucella called Bitcoin's advance a healthy rotation, telling CNBC's Halftime Report that the initial surge came from short covering, with spot demand and rising call-option skew taking over as futures positioning eased. However, Bucella warned that the buildup echoes conditions from October 2025, just before a sharp market-wide liquidation. He argued that Bitcoin's own move looks comparatively healthy, driven by spot buying rather than pure short covering. "I'm not saying that this move isn't sustainable. I'm just saying you should proceed with a lot of caution," Bucella stated. Bitcoin's ETF-backed bid has held up despite a brief late-August outflow streak, per BeInCrypto's September warning signs. Whether altcoin leverage unwinds as calmly remains the open question for the rest of September.
