解讀比特幣 (BTC) 名義未平倉合約 7B 美元的下跌

While BTC futures OI has dropped, open interest in BTC terms has held steady.

Notional open interest in bitcoin (BTC) futures and perpetual futures, a key market sentiment gauge, has declined roughly 18% from $37 billion to $30.2 billion in one month, alongside a 14% slide in the cryptocurrency’s spot market price, data from Coinglass shows.

At first glance, the data seems to indicate that longs or bullish leveraged bets anticipating a price rise have been closed out over the past four weeks. In other words, BTC's price decline is being driven by the unwinding of bullish bets.

That interpretation could be partially correct at best and masks the bullish undercurrents in the market.

Open interest refers to the number of active or open contracts at a given time, and notional open interest is calculated by multiplying the number of units in one contract by its current spot market price. Hence, changes in the asset price impact notional open interest even as the total number of contracts remains steady, painting a distorted picture of market activity.

That appears to be the case in the BTC market.

Per Coinglass, open interest has remained steady above the 500,000 BTC mark over four weeks. Meanwhile, perpetual funding rates charged by exchanges every eight hours have remained consistently positive, indicating a bias for bullish bets.

The combination of steady open interest in BTC terms and positive funding rates, together with the decline in notional open interest, suggests that some traders have been opening fresh long positions, offsetting other market participants' supposed unwinding of bullish bets.

That's a sign traders are not yet pulling back from putting on longs, according to Laurent Kssis, crypto ETF specialist at CEC Capital.

"This assumption is indeed correct. Also, more protection strategies are being implemented as the market remains very uncertain. Don't forget the last liquidity washouts were strong enough to push the market down below the $60K level. Reluctance to place long orders is still not prevailing, but hedging is a large part of the trades being executed."

Perhaps traders are hopeful that once the selling pressure from Mt. Gox reimbursements and miners is exhausted, bitcoin could resume the upward trend, keeping pace with the Nasdaq.

A similar conclusion can be drawn from the consistently positive spread between futures and spot prices, widely known as basis.

"The basis has come down slightly but is still attractive, so there is still demand for long positions as part of the basis trade, and expectations of a breakout are building as macro tailwinds accumulate and the selling pressure is likely to clear soon, so investors could be accumulating strategic longs while funding rates are low," Noelle Acheson, author of the Crypto Is Macro Now newsletter, told CoinDesk.

Activity in the spot and options market also suggests an upside bias.

According to Griffin Ardern, head of options trading and research at crypto financial platform BloFin, crypto exchange Bitfinex has been the source of bullish pressure during the price dip.

"Bitfinex whales have been buying the dips [in the spot] since late June, but I haven't observed similar signals in the other derivatives market," Ardern told CoinDesk.

The margin longs on Bitfinex, which involve using borrowed funds to buy an asset in the spot market, have steadily increased since June.

Meanwhile, traders have been buying topside bets in the options market, according to QCP Capital.

"Despite the sell-off, the options market is still heavily skewed in favor of the topside, suggesting that the market is still anticipating a year-end rally. This aligns with the desk's observation of significant buying interest in the longer-term options at the $100K/$120 strike [calls]," QCP said in a market update on Wednesday.

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