Netflix Stock Climbs After Pershing Square Discloses New Stake

Netflix (NFLX) shares gained 1.8% in pre-market trading after a regulatory filing revealed that Bill Ackman’s Pershing Square Capital Management has taken a new, significant stake in the company. The disclosure marks a notable return to the stock for the influential activist investor.

Ackman's Renewed Conviction

According to its semiannual report released Wednesday evening, Pershing Square has acquired a position of 3.15 million Netflix shares. This new investment represents 4.9% of the hedge fund's portfolio, signaling a strong conviction in the streaming company's future prospects.

The move is particularly noteworthy given Pershing Square's history with the stock. The fund invested over $1 billion in Netflix in early 2022, but exited its position just months later, realizing a loss reported to be over $400 million. The fund's re-entry suggests a belief that the market has overly discounted Netflix shares, which had fallen approximately 50% from their June 2025 highs.

The Investment Thesis

In its disclosure, Pershing Square stated its belief that "Netflix has since effectively won the streaming wars." The firm projects that the company can achieve sustained double-digit revenue growth while its content costs increase at a slower pace.

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This dynamic is expected to drive "continued margin expansion," according to the fund. The endorsement from a prominent value-oriented investor provides a significant counterpoint to recent market caution surrounding the stock.

Market Context and Advertising Growth

The stock's rise significantly outpaced the broader market, which saw modest pre-market gains. The catalyst appears highly specific to Netflix, bolstered by separate positive news from the company's advertising division.

Netflix recently announced that its 2026 U.S. Upfront advertising commitments had nearly doubled compared to the prior year. The company is targeting approximately $3 billion in advertising revenue for 2026, highlighting the growing success of its ad-supported tier as a secondary revenue stream. This positive momentum helps offset recent concerns from insider stock sales and guidance for slightly slower revenue growth in the third quarter.