In recent years, Bill Ackman has invested Pershing Square Capital Management (NYSE:PS) heavily in Magnificent Seven stocks. This included taking a new position in Meta Platforms (NASDAQ:META) in the fourth quarter of 2025. The position took a beating earlier this year, but is finally positive for 2026.

Here’s a look at how much Ackman’s position is up in 2026.

Ackman Buys Meta Stock in Q4

Ackman announced the new stake in Meta in an investment presentation in February 2026, before a 13F filing officially unveiled the full size.

In the fourth quarter filing, it was unveiled that Pershing Square Capital Management bought 2,673,569 META shares. That position was later slightly reduced to 2,660,861 shares in the first quarter.

It is unknown the exact date that Ackman bought the shares, but many point to November after Meta’s third-quarter earnings report.

Meta stock traded between $581.25 and $759.19 in the fourth quarter, with the low set on Nov. 19, 2025 and the high set on Oct. 29, 2025.

Based on those prices, Meta stock is down 12.1% from the fourth quarter high and up 14.8% from the fourth quarter lows.

Without knowing Ackman’s exact timeline, we use the end of the fourth quarter to estimate how much the position is up in 2026.

The position ended 2025 worth $1,756,407,737.49. Today, the position is worth $1,776,204,543.33. This means the Meta position is up $19,796,805.84, or nearly $20 million since the start of the year.

That amount is rather small compared to the overall size. Meta ended the first quarter as the sixth largest position in the Pershing Square Capital fund (NYSE:PSUS), worth $1.52 billion and representing around 11% of assets.

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Ackman’s Belief in Meta

A second-quarter 13F for Pershing Square will come out by Aug. 14 and show whether the hedge fund kept their large position in Meta or changed the position at all.

In February, Ackman shared his bullishness on the Magnificent Seven stock during an investor presentation.

“We believe Meta’s current share price underappreciates the company’s long-term upside potential from AI and represents a deeply discounted valuation for one of the world’s greatest businesses,” Pershing Square said in the presentation. Meta is a “leader in the fast-growing digital advertising space and one of the clearest beneficiaries of AI integration,” it added.

“We believe concerns around META’s AI-related spending initiatives are underestimating the company’s long-term upside potential from AI,” it said.

The presentation highlighted Meta’s 3.5 billion daily active users and a growing user base. An experienced leadership team and the company’s stock multiples are also highlighted as reasons to be bullish going forward.

In recent months, Ackman has increased bullishness on Meta and Microsoft Corporation (NASDAQ:MSFT), two of the Magnificent Seven stocks that had fallen the most.

The investor also sold off stakes in Alphabet Inc (NASDAQ:GOOG)(NASDAQ:GOOGL), one of the top-performing Magnificent Seven members.

Investors are closely watching to see if Ackman continues to be wrong on which Magnificent Seven stocks will outperform or if Meta and Microsoft will eventually take over with gains.

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Photo created by Midjourney, Dall-E