Cathie Wood’s ARK Invest Increases Bitcoin ETF Position While Reducing Technology Stakes

TLDR

• Cathie Wood’s ARK Invest purchased shares worth $1.7 million in ARK 21Shares Bitcoin ETF on December 9
• Two ARK funds participated: ARKF bought 5,754 shares and ARKW acquired 49,246 shares at $30.92 per share
• ARK reduced holdings in Ibotta, Iridium Communications, Adaptive Biotechnologies, and Teradyne
• New CFTC rules permit approved firms to use major cryptocurrencies and stablecoins as margin collateral
• Bitcoin prices remain volatile with early trading sessions frequently reversing overnight gains

Cathie Wood’s ARK Invest executed multiple portfolio adjustments on December 9, 2025, with trade disclosures showing increased exposure to cryptocurrency investments alongside reduced positions in several technology and life sciences companies.

Two of ARK’s exchange-traded funds participated in the Bitcoin ETF purchase. The ARK Fintech Innovation ETF acquired 5,754 shares of the ARK 21Shares Bitcoin ETF. The ARK Next Generation Internet ETF bought 49,246 shares of the same product.

The total investment amounted to roughly $1.7 million based on ARKB’s closing price of $30.92 per share. These purchases occurred during a period of heightened volatility in cryptocurrency markets.

Bitcoin has experienced turbulent trading patterns in recent sessions. Price gains achieved during overnight hours have frequently disappeared during U.S. market hours. Market participants continue to monitor expectations for Federal Reserve rate cuts and evolving regulatory frameworks affecting digital assets.

Regulatory Changes Support Institutional Crypto Adoption

The Commodity Futures Trading Commission released a new framework for digital asset margin requirements. The rules allow approved financial firms to accept major cryptocurrencies and stablecoins as collateral. This development represents a step toward integrating digital assets into conventional financial infrastructure.

The regulatory clarity has contributed to more stable sentiment among institutional investors. Traditional financial institutions can now utilize cryptocurrency holdings in ways previously limited to cash and securities.

Stock Sales Span Multiple Sectors

ARK Invest reduced exposure to several companies across its fund lineup. The firm sold shares of Ibotta, which operates a digital promotions and rewards platform. The ARK Fintech Innovation ETF sold 52,047 shares while the ARK Next Generation Internet ETF disposed of 47,141 shares.

Iridium Communications faced additional selling from ARK portfolios. The satellite communications company saw 23,994 shares sold from the ARK Innovation ETF. This continued a pattern of reduced exposure to the firm.

The ARK Genomic Revolution ETF completely exited its position in Adaptive Biotechnologies. The fund sold 90,807 shares of the clinical-stage biotechnology company. This marked a full divestment from the genomics-focused holding.

The ARK Autonomous Technology & Robotics ETF trimmed its stake in Teradyne. The fund sold 2,253 shares of the semiconductor testing equipment manufacturer. This represented a reduction in exposure to the chip industry supply chain.

Market conditions have presented mixed signals for growth-oriented investors. Technology stocks have faced headwinds while cryptocurrency markets navigate regulatory developments and price volatility. ARK’s recent trades demonstrate a preference for increasing Bitcoin exposure through regulated ETF products while stepping back from select equity positions.

The purchases of ARKB occurred as Bitcoin traded within a volatile price range. The CFTC’s margin framework announcement provided institutional investors with clearer guidelines for cryptocurrency usage in financial operations.

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