In a rare alignment that defies their typically opposite investment styles, Stanley Druckenmiller's Duquesne Family Office and Cathie Wood's ARK Invest both significantly increased their positions in Amazon and Alphabet during the second quarter of 2026, according to newly filed 13F reports.

The most striking move came from Druckenmiller, who increased his Amazon stake by 1,083% — a bet that goes well beyond a cautious diversification strategy. Duquesne ended Q2 with approximately 541,600 shares worth roughly $129 million in the e-commerce and cloud giant.

Wood's ARK was more measured but still substantially added to its position, raising its Amazon stake by 18% to approximately 1.59 million shares worth about $379 million, representing 2.46% of the firm's portfolio, according to data from Insider Monkey.

Market Context

Both investors also targeted Alphabet with fresh conviction. Druckenmiller opened a new position in Google's parent company with 336,300 shares worth roughly $120 million, equivalent to 2.31% of his portfolio. Wood's ARK increased its Alphabet stake by 45%, accumulating about 1.04 million shares worth approximately $369 million.

The synchronized buying comes as both stocks have faced mixed sentiment this year, with growth concerns and regulatory scrutiny weighing on valuations despite strong operational performance.

Analysis

Druckenmiller runs concentrated macro bets and is known for moving aggressively when conviction builds. His 1,083% increase in Amazon signals genuine belief in the company's trajectory rather than passive rebalancing. Meanwhile, Wood manages long-duration disruptive growth funds with a typically longer time horizon — making their overlap particularly noteworthy.

The bull case for Amazon centers heavily on AWS, which reported cloud revenue growth of 37% year over year in Q2 2026, accelerating from 28% the prior quarter. That marked the fifth straight quarter of accelerating growth for the division, now running at a $169 billion annualized revenue rate with an operating margin of approximately 39.4%, up 6.5 percentage points year over year.

AWS backlog hit $496 billion during the quarter, climbing $132 billion in a single quarter and growing triple digits year-over-year — a figure that suggests robust future revenue visibility. Management attributed margin expansion to efficiency gains, better capacity management, and fixed-cost control.

Amazon is also developing its own silicon through Trainium and Graviton chips, a vertical integration strategy that keeps margins internal while allowing competitive pricing on compute services.

Key Numbers

- Amazon AWS cloud revenue growth: 37% YoY in Q2 2026 (accelerating from 28% prior quarter)

- AWS backlog: $496 billion, up $132 billion sequentially

- AWS annualized revenue rate: $169 billion

- AWS operating margin: approximately 39.4%, up 6.5 percentage points YoY

- Druckenmiller's Amazon stake increase: 1,083% to ~541,600 shares worth $129 million

- ARK's Amazon position: ~1.59 million shares worth $379 million (2.46% of portfolio)

- Druckenmiller's Alphabet new position: 336,300 shares worth $120 million (2.31% of portfolio)

- ARK's Alphabet stake increase: 45% to ~1.04 million shares worth $369 million

What to Watch

The 13F filings reflect positions at the end of Q2 and do not confirm whether either investor has maintained, added to, or reduced these positions since July 1. Both Amazon and Alphabet face upcoming earnings reports that will test whether the operational momentum justifying these purchases continues. AWS margin trajectory and AI-related revenue contributions remain key metrics for Amazon investors, while Alphabet faces ongoing scrutiny over its AI product rollout and advertising market share.