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CoinShares says part of Bitcoin fleet Is unprofitable

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Fed fallout slows Crypto ETP inflows to $230 million

Bitcoin mining margins remain under pressure as lower revenue and higher operating costs narrow the list of viable operators. 

Summary

  • CoinShares said falling hashprice has pushed part of the Bitcoin mining fleet below profitability levels.
  • Older mining machines face the most pressure as electricity costs rise above sustainable operating thresholds.
  • Bitcoin difficulty dropped sharply in March, offering some relief while miner margins remained under pressure.

A new CoinShares report says part of the global mining fleet now sits below profitability, with older machines and higher power costs facing the most pressure.

CoinShares said Q4 2025 was the hardest quarter for Bitcoin miners since the April 2024 halving. The firm said lower Bitcoin prices and near-record network hashrate pushed hashprice to five-year lows and lifted the weighted average cash cost to produce one Bitcoin among listed miners to about $79,995 in Q4 2025.

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The report said hashprice dropped further to about $29 per PH/s/day in Q1 2026. CoinShares added that current mining economics do not support a broad hardware refresh cycle, as weaker returns continue to pressure balance sheets and daily cash flow across the sector.

CoinShares said the current revenue level makes several machine models unworkable at common power rates. The report stated that any miner running hardware below an S19 XP at electricity costs of 6 cents per kilowatt-hour or more is losing money at a hashprice near $30 per PH/s/day.

The firm estimated that this group accounts for about 15% to 20% of the global Bitcoin mining fleet. That places the current squeeze on operators with older fleets, weaker efficiency, or less favorable power agreements, while larger miners with newer hardware and cheaper energy retain more room to operate.

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Moreover, hashrate Index said USD hashprice rose 4.9% in the week to March 23, reaching $33.65 per PH/s/day from $32.08. Even so, the same report said that at about $33 per PH/s/day, hashprice remains at or below breakeven for many miners depending on machine type and operating costs.

The network has already started to reflect that strain. Hashrate Index said Bitcoin’s latest difficulty adjustment on March 20 cut difficulty by 7.76% to 133.79 trillion, reducing the work needed to mine a block and giving some relief to miners that stayed online.

CoinShares sees more stress if Bitcoin stays below key levels

CoinShares head of research James Butterfill said, 

“If prices were to stay below US$80k for the remainder of the year, we forecast the hashprice to continue to fall.” 

He added that in that scenario, “the hashprice would more likely flatline” as miners switch off unprofitable rigs and network hashrate falls.

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CoinShares also said higher-cost miners may face more capitulation in the first half of 2026 unless Bitcoin recovers. The report said the sector is moving toward operators with structural advantages, including low-cost power, better machine efficiency, and the ability to shift part of their business toward AI and data center services.

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New ‘Torg Grabber’ Malware Targets 728 Crypto Wallets

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Torg Grabber, a newly identified infostealer malware, targets 728 crypto wallet extensions across 850 browser add-ons, and it is already in active deployment.

The malware exfiltrates seed phrases, private keys, and session tokens through encrypted channels before most endpoint tools register a detection event. Self-custody users running browser-based wallets are the primary exposure surface.

Gen Digital researchers documented the threat after tracing a loader chain through domain reputation data, ultimately compiling 334 samples across a three-month development window. This is not a proof-of-concept. It is a live Malware-as-a-Service operation with identified operators.

Key Takeaways:
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  • Threat Scope: Torg Grabber scans 850 browser extensions, 728 of them crypto wallet targets, across 25 Chromium and 8 Firefox browser variants.
  • Attack Method: Dropper masquerades as a legitimate Chrome update (GAPI_Update.exe, 60 MB), deploys payload via a fake 420-second Windows Security Update progress bar, then exfiltrates data using ChaCha20 encryption with HMAC-SHA256 authentication through Cloudflare infrastructure.
  • Who Is at Risk: Browser-extension wallet users — MetaMask, Phantom, and comparable hot wallets — face direct credential theft; hardware wallet users face indirect risk only if seed phrases are stored digitally.

Discover: The best crypto presales gaining institutional momentum right now

The Mechanism: How Torg Grabber Malware Executes the Attack On Crypto Wallets

The infection chain opens with a dropper disguised as GAPI_Update.exe — a 60 MB InnoSetup package distributed from Dropbox infrastructure. It extracts three benign DLLs into %LOCALAPPDATA%\Connector\ to establish a clean-looking footprint, then launches a fake Windows Security Update progress bar running for exactly 420 seconds, complete with animated ASCII art compiled via csc.exe. The delay is deliberate: it creates a plausible installation window while the payload deploys.

The final executable drops under randomized names — v4jkqh.exe, hkjpy08.exe, ln3dkgz.exe — into C:\Windows\ across documented samples. One captured 13 MB instance spawned dllhost.exe and attempted to disable Event Tracing for Windows before behavioral detection terminated it mid-execution.

Post-deployment, Torg Grabber targets 25 Chromium browsers, 8 Firefox variants, Discord, Steam, Telegram, VPN clients, FTP clients, email clients, and password managers in addition to crypto wallets. Data is archived to an in-memory ZIP or streamed in chunks. Exfiltration routes through Cloudflare endpoints using per-request HMAC-SHA256 X-Auth-Token headers and ChaCha20 encryption — a production-grade architecture, not improvised tooling.

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Gen Digital’s analysis identified over 40 operator tags embedded in binaries: nicknames, date-encoded batch IDs, and Telegram user IDs linking eight operators to the Russian cybercrime ecosystem. The MaaS model means individual operators can deploy custom shellcode post-registration, expanding the attack surface beyond the base configuration. As Gen Digital researchers described it, Torg Grabber evolved from Telegram dead drops to “a production-grade REST API that worked like a Swiss watch dipped in poison.”

Discover: The best crypto to diversify your portfolio with

The Self-Custody Signal: What 728 Wallets Actually Means

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728 is not an arbitrary number. It represents a deliberate configuration sweep, every major browser-based wallet with measurable installation volume. MetaMask alone has over 30 million monthly active users. The extension-targeting logic means Torg Grabber does not need to find a specific victim; it harvests whatever wallet credentials are present on any infected machine.

The broader risk bifurcates cleanly. Self-custody users storing seed phrases in browser storage, text files, or password managers face complete wallet compromise on a single infection. Exchange-held assets are not directly exposed to this specific attack vector, the malware targets local credential stores, not exchange APIs at scale. But session token theft from browser storage can expose connected exchange accounts if login sessions are active.

If Torg Grabber’s MaaS operator base expands, and Gen Digital’s monitoring of its REST API infrastructure suggests active iteration, the wallet targeting list will grow. The 728 figure is a current snapshot, not a ceiling. Comparable infostealers like Vidar and RedLine normalized this model years ago; Torg Grabber is executing the same playbook with more structured infrastructure.

Discover: The best crypto presales gaining institutional momentum right now

The post New ‘Torg Grabber’ Malware Targets 728 Crypto Wallets appeared first on Cryptonews.

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ARK invest uses Kalshi to track market expectations

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ARK invest uses Kalshi to track market expectations

ARK Invest is adding Kalshi’s prediction market data to its research process as more institutions test whether these markets can help measure expectations in real time. 

Summary

  • ARK Invest adopts Kalshi data to track real time expectations and guide research decisions
  • Prediction markets expand beyond trading as institutions explore signals for risk management and forecasting
  • Federal Reserve and academia study prediction markets as tools for real time economic expectations analysis

Meanwhile, the move places prediction market signals alongside ARK’s existing work on market trends, policy events, and company milestones, showing how the data is being used for research and portfolio planning beyond direct trading.

According to the announcement, ARK will use Kalshi data to track real-time expectations and support its market-based research. The firm also plans to study signals tied to trading activity, regulatory approvals, and technology progress as part of that process.

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Kalshi said ARK will also use the data in risk management and hedging. Cathie Wood said, “Bringing prediction markets into institutional workflows is a natural next step for innovation in financial research,” while ARK Research Director Nick Grous said these markets offer “some of the purest expressions of risk around key economic and company-specific outcomes.”

In an X post, Wood said on X that ARK has also been working with Kalshi on markets tied to topics the firm follows, including macroeconomic releases and scientific milestones. Kalshi CEO Tarek Mansour said some of those markets are already live, including contracts linked to non-farm payrolls, deficit-to-GDP ratios, and business key performance indicators.

The partnership adds to a wider push to use prediction market data as a decision tool. Kalshi has grown into one of the main regulated platforms in the sector, and firms are testing whether market-based probability signals can complement surveys, analyst models, and event-driven research.

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Fed and academic research track the same trend

A Federal Reserve paper published last month said Kalshi’s macro markets can provide a “high-frequency, continuously updated, distributionally rich benchmark” for researchers and policymakers. The paper compared Kalshi data with surveys and market-based forecasts and argued that prediction markets can offer a real-time view of changing expectations.

Academic work has also examined how prediction markets react to political shocks. A recent paper using Polymarket’s 2024 presidential election data studied trading around the Biden-Trump debate, the assassination attempt on Trump, and Biden’s withdrawal from the race, showing how traders adjusted positions as events unfolded.

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MARA Sells 15,133 Bitcoin for $1 Billion Debt Repurchase, Retains 15,627 BTC in Reserve

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Brian Armstrong's Bold Prediction: AI Agents Will Soon Dominate Global Financial

TLDR:

  • MARA sold 15,133 BTC at ~$65,348 each, generating roughly $989M to fund its debt repurchase plan. 
  • The company captured $88.1M in savings by repurchasing convertible notes at a 9% discount to par.  
  • MARA reduced its total convertible debt by 30%, bringing the balance down to roughly $2.3 billion. 
  • After the BTC sale, MARA still holds 15,627 Bitcoin as long-term strategic reserves on its books.

MARA Holdings, Inc. sold 15,133 bitcoins to complete a $1 billion repurchase of its convertible senior notes. The Miami-based company executed the sales between March 4 and March 25, 2026.

Total proceeds reached approximately $1.1 billion, with the remainder reserved for general corporate purposes. The company, listed on NASDAQ under the symbol MARA, is the largest Bitcoin mining firm in the United States.

Following the deal, MARA retains approximately 15,627 bitcoins as long-term core reserves.

MARA Captures $88 Million Discount on Convertible Note Repurchase

The repurchase targets 0.00% convertible senior notes due in 2030 and 2031. MARA agreed to buy back $367.5 million in 2030 notes for roughly $322.9 million.

It also repurchased $633.4 million in 2031 notes for approximately $589.9 million. Closings are set for March 30 and 31, 2026, respectively.

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The transactions capture roughly $88.1 million in cash savings before costs. This equals about a 9% discount to the notes’ par value.

Overall, MARA’s outstanding convertible debt will decrease by approximately 30%. The deal also cuts potential shareholder dilution from note conversion features.

After closing, $632.5 million of the 2030 Notes and $291.6 million of the 2031 Notes remain. MARA’s total convertible debt stood at around $3.3 billion before the deal. That balance is expected to fall to roughly $2.3 billion. Other outstanding note series remain unchanged.

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CEO Fred Thiel addressed the decision in a statement. “By retiring over $1 billion of face value debt at a discount, we captured $88 million in value,” Thiel stated.

He added the move reduces shareholder dilution and deleverages the balance sheet. J. Wood Capital Advisors and Paul, Weiss served as financial and legal advisors.

MARA Moves Beyond Bitcoin Mining Into Digital Energy and AI

The 15,133 bitcoins sold averaged approximately $65,348 per coin, generating roughly $989 million. Those funds were directed primarily toward financing the note repurchases.

Remaining proceeds will support general corporate purposes. MARA completed the sales without raising new equity or taking on additional debt.

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MARA stated that it is now expanding beyond pure-play bitcoin mining. Digital energy and AI/HPC infrastructure are named as primary growth targets.

This reflects a capital allocation strategy aimed at long-term diversification. New revenue streams from these areas could reduce the company’s dependence on mining income.

Using bitcoin holdings to fund debt reduction allowed MARA to act on its own terms. The company still holds approximately 15,627 bitcoins as a strategic reserve.

That position gives MARA room to respond to future market opportunities. Retaining a strong reserve remains part of the company’s long-term plan.

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Thiel said the transaction’s position at MARA, as well as it builds into new infrastructure areas. He noted the deal strengthens financial standing and expands strategic options.

Remaining convertible obligations total roughly $2.3 billion after the repurchases. MARA continues to manage its capital structure with efficiency and long-term growth in mind.

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Investors yank $171 million from BTC ETFs in largest single-day outflow in three weeks

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Investors yank $171 million from BTC ETFs in largest single-day outflow in three weeks

Institutional demand for bitcoin appears to be cooling after a strong start to the month.

On Thursday, investors withdrew a combined $171.12 million from the 11 U.S.-listed spot bitcoin exchange-traded funds, marking the largest single-day outflow in just over three weeks, according to data from SoSoValue. BlackRock’s IBIT saw $41.92 million in outflows, while funds such as FBTC, GBTC, BITB and ARKB each recorded withdrawals in the $20 million to $30 million range.

The recent pullback follows a period of robust inflows, with these funds attracting more than $2 billion between late February and mid-month. Since then, momentum has slowed, with just $95.8 million in inflows last week and net outflows of $70.71 million so far this week.

The moderation in flows may point to a pause in institutional accumulation, with investors adopting a more measured approach to these ETFs. Launched in January 2024, the funds allow market participants to take exposure to bitcoin without requiring direct ownership.

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The slowdown in demand raises questions about how long bitcoin can maintain resilience near $70,000 amid broader macroeconomic shocks.

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Bitcoin Whales Bought up 61K BTC In a Month Amid Global Uncertainty

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Bitcoin Whales Bought up 61K BTC In a Month Amid Global Uncertainty

Large Bitcoin holders accumulated 61,568 more Bitcoin over the past month against the backdrop of escalating conflict in the Middle East and macroeconomic uncertainty. 

Whales and sharks, defined as those holding between 10 and 10,000 Bitcoin (BTC), have increased their holdings by 0.45%, while wallets with under 0.01 Bitcoin have added 0.42%, or 213 BTC, over the past month, Santiment said in an X post Thursday.

The figures support recent data showing that Bitcoin exchange outflows have persisted throughout March, indicating that Bitcoin holders are accumulating rather than looking to sell. 

Santiment analysts added that whale accumulation could be a “promising sign” of an eventual breakout from the range. 

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“Ideally, the ranging pattern will break upwards when large wallets are accumulating, while retail is dumping. This has historically been a very reliable pattern to signal the start of bull cycles,” the analysts said.

Source: Santiment

Tensions in the Middle East escalated in February after the US and Israel launched strikes against Iran. Iran retaliated against several neighboring countries, and the conflict has continued since.

Some whales wait for breakout; small holders driven by FOMO

Some Bitcoin whales are taking a different approach. 

On March 19, two Bitcoin whales moved tens of millions of dollars to exchanges as Bitcoin fell and energy prices jumped after attacks on Gulf oil and gas infrastructure deepened during the Iran conflict.

Dominick John, an analyst at Zeus Research, told Cointelegraph that the whales who have been accumulating in the background are likely preparing for the next breakout.

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“Whales are scooping up BTC because they’re positioning ahead of a potential breakout, quietly stacking during consolidation periods. Small wallets are chasing the momentum, driven by FOMO during uptrends and the fear of missing the next leg up,” he said.

Related: Binance says US midterms could boost Bitcoin and stocks

“Whales tend to buy in waves, so accumulation could continue if the range holds and macro conditions stay supportive. On the other hand, if retail FOMO overheats, we could see a pause or slight sell-off before the next accumulation phase,” John added.

Fear and greed index in “extreme fear”

Meanwhile, investor sentiment remains deeply uncertain. The Crypto Fear & Greed Index returned a score of 13 on Friday, firmly in “extreme fear” territory.

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Cryptocurrencies, Adoption, Social Media, Whale
The Crypto Fear & Greed Index has been firmly in “extreme fear” territory. Source: alternative.me

Thursday’s score was 10, and both the prior week and the month of February averaged “extreme fear” ratings as well, according to the index.

Magazine: Banks want to run Vietnam’s crypto exchanges, Boyaa’s $70M BTC plan: Asia Express