Here's what bitcoin and ether traders are doing ahead of the binary U.S. CPI print

The July U.S. consumer price index hits the wires Wednesday morning, and it is shaping up as a classic binary event for bitcoin and other cryptocurrencies.

A hotter-than-expected number would strengthen the case for a Federal Reserve rate hike in September, push Treasury yields higher, and keep pressure on risk assets. A softer print would do the opposite. Either way, the result could bitcoin out of the $62,000--$66,000 range it has been stuck in for weeks.

Traders are positioning in different ways ahead of the data release.

Some are buying upside exposure through call options on leading options exchange Deribit. Calls let traders benefit if the price rises while limiting their risk to the premium paid upfront -- similar to buying a lottery ticket with a defined maximum loss.

"Dominant flow on Deribit BTC options since yesterday has been concentrated in the 25SEP26 70k call," data tracking platform Laevitas said.

Traders who bought that September expiry call at the $70,000 strike paid a total premium of roughly $2.5 million. That is the most they can lose if bitcoin stays below $70,000 by the end of September.

The demand for this bullish exposure suggests some investors expect the ongoing choppy price action in BTC to end with a decisive move toward $70,000. Perhaps, they expect the CPI to come in softer-than-expected, lifting risk assets higher.

Economists currently expect the July report to show headline CPI rising 0.1% month-over-month and 3.4% year-over-year. Core CPI, which strips out food and energy, is forecast to rise 0.2% month-over-month and 2.5% year-over-year, according to consensus estimates from Reuters, Dow Jones, and Bloomberg surveys.

Other traders are less focused on direction and more interested in a jump in volatility.

"We reiterate our recommendation to accumulate December optionality, leveraging depressed implied volatility across the curve ahead of several key catalysts, notably updates on bipartisan Clarity Act negotiations, shifts in Middle East geopolitical risks, and potential monetary policy pivots," TDX Strategies said.

"Structurally, we favour December strangles on BTC and SOL," the firm added.

A strangle involves buying both a call and a put with the same expiration. The position profits if the price makes a large move in either direction. The maximum loss is limited to the combined premium paid and occurs only if the market stays relatively flat.

Volatility could expand quickly once bitcoin breaks out of its recent range, according to Jeff Anderson, managing partner at market-making firm STS Digital.

"A decisive break of either level in spot should see volatility expand quickly, and the closely watched CPI this Wednesday will be our first indicator following Warsh's inflation focused press conference," Anderson told CoinDesk.

"It is also worth noting the looming seasonal backdrop: September has historically been Bitcoin's weakest month, down roughly 4% on average since 2013," he added.

On the blockchain, the picture looks more constructive for the bulls. Major coins are leaving exchanges, a sign of accumulation, even as some sophisticated traders remain cautious in the derivatives market, according to analytics firm Nansen.

"On spot, the majors are being accumulated, not distributed: ETH saw exchange net outflows of $49.7M over the past day and $164.6M over the past week, meaning coins are leaving exchanges rather," Jake Kennis, senior research analyst at Nansen, said in an email.

Kennis added that the "derivatives picture is more guarded," with smart traders on the decentralized exchange Hyperliquid holding a net short exposure of $46.8 million in bitcoin and $20.9 million in ether.

Taken together, the positioning points to a market that is cautiously optimistic on both price and volatility as the key inflation data approaches.

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