Vanguard, the world's second-largest asset manager with approximately $11 trillion in assets, will enable clients to trade third-party cryptocurrency ETFs and mutual funds beginning December 2, 2025, according to Bloomberg. The policy shift grants more than 50 million investors access to products holding Bitcoin, Ether, XRP, Solana, and other digital assets through the firm's US brokerage platform. The decision follows the appointment of Salim Ramji as chief executive this year, reversing the firm's previous stance under former CEO Tim Buckley, who stated Bitcoin ETFs did not belong in typical retirement accounts.

Anthropic demonstrated that advanced AI models successfully identified and exploited vulnerabilities in blockchain smart contracts during controlled testing. The company tested 10 leading AI systems against 405 previously hacked contracts from 2020–2025, with agents exploiting over half and simulating theft of approximately $550.1M in value. When restricted to 34 contracts exploited after March 1, 2025, Claude Opus 4.5, Claude Sonnet 4.5, and GPT-5 generated working exploits worth $4.6M in simulated value, according to a recent study conducted with MATS and Anthropic Fellows.

Bitcoin traded around $86,000 during Asian hours following a significant cryptocurrency selloff and global bond market pressure. The largest digital asset by market capitalization remains approximately 30% below its October peak. Market participants exercised caution amid shifting monetary policy expectations in Japan and ongoing stress in credit markets.

Bitcoin dropped to $86,053 during Asian trading on Monday, declining 5.4%, while Ethereum fell 6.1% to $2,819. Data show approximately $608 million in cryptocurrency liquidations occurred over the past 24 hours, with long positions accounting for more than $535 million of the total.

Bitcoin traded close to $90,000 during Friday's Asian session as regional equity markets opened with mixed performance. The largest cryptocurrency fluctuated in a narrow range while investors weighed whether recent gains in both digital assets and stocks can sustain momentum amid growing expectations for Federal Reserve rate cuts in December.

The California Public Employees' Retirement System has seen its Strategy (MSTR) investment decline to approximately $80 million from over $144 million, following a 45% drop in the stock this quarter. The pension fund acquired 448,157 shares in Q3 but has faced losses amid broader market weakness. JPMorgan analysts warn that Strategy faces potential removal from major equity benchmarks, which could trigger up to $2.8 billion in outflows from passive funds.

South Korean crypto exchange Upbit disclosed a security incident on November 27 involving approximately $36m in Solana-based assets transferred to an unknown wallet. The platform immediately suspended deposit and withdrawal services and committed to covering all losses from its own reserves without impacting customer balances. The breach occurred nearly six years after Upbit lost 342,000 ETH to North Korean actors in a November 2019 attack.

Robinhood Markets and Susquehanna Group have agreed to purchase a 90% stake in regulated exchange LedgerX from Miami International Holdings. The partners will operate LedgerX as an independent exchange through a joint venture, with Robinhood holding majority control. Miami International Holdings will retain a 10% strategic stake. The acquisition positions Robinhood to expand into event-driven crypto markets and launch a futures and derivatives platform focused on prediction markets.

Kevin Hassett, White House National Economic Council director, has emerged as the front-runner for Federal Reserve chair as President Donald Trump narrows his selection. Hassett disclosed owning $1m to $5m in Coinbase stock and receiving over $50,001 from the exchange for advisory work, according to Office of Government Ethics filings. Treasury Secretary Scott Bessent has completed second-round interviews with finalists, with Trump likely to announce a decision before December 25, 2025.