Shares of Netflix (NFLX) surged as much as 4.7% during Thursday's early trading session after Bill Ackman's Pershing Square Capital Management disclosed a 3.15 million-share stake in the streaming platform. By mid-morning, the stock held gains of approximately 3.5%, trading near $76.91.

The position was revealed in Pershing Square's semiannual shareholder report published Wednesday night and represents 4.9% of the hedge fund's total portfolio. Known for its concentrated approach—typically holding positions in fewer than twelve companies at once—an allocation of this size reflects substantial conviction in Netflix's outlook.

Pershing Square's Investment Thesis

The shareholder letter articulated a direct and bullish case for the investment.

"Netflix has since effectively won the streaming wars," Pershing Square stated, projecting that the company will "compound revenue at a double-digit growth rate, with content costs growing more slowly than revenue, driving continued margin expansion." The assessment carries weight given that rival platforms—Disney+, Paramount+, and Warner Bros. Discovery's Max—have spent the past two years cutting content budgets, restructuring operations, or pursuing consolidation to stem losses in their direct-to-consumer divisions.

The fund also described Netflix's current valuation as a "substantial discount," calling it "highly attractive in terms of business quality and prospective earnings growth."

This marks Pershing Square's return to Netflix after a notable prior episode. The fund purchased more than $1 billion in Netflix shares in early 2022, only to exit the position months later with losses exceeding $400 million. That exit came during a turbulent period when Netflix reported its first quarterly subscriber decline in more than a decade, triggering a steep sell-off in the stock.

Shares Under Pressure Before Disclosure

Netflix shares had declined between 42% and 50% from their June 2025 peak heading into this week's announcement. The sell-off was driven by an unsuccessful Warner Bros. Discovery acquisition attempt, reports of additional failed deal negotiations, and concerns over viewer engagement metrics.

At 24 times forward earnings, the stock now trades well below its three-year average earnings multiple of 43—a compression that sits at the heart of Pershing Square's rationale, alongside accelerating advertising revenue and disciplined content spending.

Advertising Tier Gaining Momentum

Despite the share price decline, Netflix has advanced several strategic initiatives. The company's advertising-supported subscription tier, launched in late 2022, is gaining rapid traction, with 2026 U.S. Upfront advertising commitments approaching double the prior year's levels. Management projects approximately $3 billion in advertising revenue for 2026, positioning the tier as a meaningful secondary revenue stream alongside subscription income.

Netflix's expansion into live sports programming is also drawing demographic groups the platform has historically struggled to capture, broadening the subscriber base without proportional increases in content expenditure. Deals such as WWE Raw and NFL Christmas Day games represent a deliberate push into real-time event programming—a category that has historically driven engagement and ad pricing for traditional broadcast networks.

Broader Market Context and Potential Headwinds

Thursday's broader equity markets provided a supportive backdrop, with the S&P 500 and Dow Jones Industrial Average each rising 0.2%, and the Nasdaq Composite gaining 0.1%. Netflix's advance far outpaced these benchmarks, driven solely by the Pershing Square disclosure.

One potential headwind for investors to weigh: both Netflix's CEO and CFO executed stock sales in early August. Separately, analysts flagged moderately slower revenue growth in the company's Q3 guidance following second-quarter earnings results. The guidance moderation underscores the challenge of sustaining outsized growth rates as Netflix's subscriber base approaches saturation in its largest developed markets, making advertising and password-sharing crackdown monetization increasingly central to the forward growth narrative.