Institutional investors in Phathom Pharmaceuticals, Inc. (NASDAQ:PHAT) see US$88m decrease in market cap last week, although long-term gains have benefitted them.

Phathom Pharmaceuticals -4.67%

Phathom Pharmaceuticals

PHAT

11.42

-4.67%

Key Insights

  • Institutions' substantial holdings in Phathom Pharmaceuticals implies that they have significant influence over the company's share price
  • A total of 9 investors have a majority stake in the company with 51% ownership
  • Ownership research along with analyst forecasts data help provide a good understanding of opportunities in a stock

Every investor in Phathom Pharmaceuticals, Inc. (NASDAQ:PHAT) should be aware of the most powerful shareholder groups. With 51% stake, institutions possess the maximum shares in the company. Put another way, the group faces the maximum upside potential (or downside risk).

No shareholder likes losing money on their investments, especially institutional investors who saw their holdings drop 8.3% in value last week. Still, the 110% one-year gains may have helped mitigate their overall losses. But they would probably be wary of future losses.

Let's take a closer look to see what the different types of shareholders can tell us about Phathom Pharmaceuticals.

ownership-breakdown
NasdaqGS:PHAT Ownership Breakdown February 6th 2026

What Does The Institutional Ownership Tell Us About Phathom Pharmaceuticals?

Institutional investors commonly compare their own returns to the returns of a commonly followed index. So they generally do consider buying larger companies that are included in the relevant benchmark index.

Phathom Pharmaceuticals already has institutions on the share registry. Indeed, they own a respectable stake in the company. This implies the analysts working for those institutions have looked at the stock and they like it. But just like anyone else, they could be wrong. It is not uncommon to see a big share price drop if two large institutional investors try to sell out of a stock at the same time. So it is worth checking the past earnings trajectory of Phathom Pharmaceuticals, (below). Of course, keep in mind that there are other factors to consider, too.

earnings-and-revenue-growth
NasdaqGS:PHAT Earnings and Revenue Growth February 6th 2026

Investors should note that institutions actually own more than half the company, so they can collectively wield significant power. Hedge funds don't have many shares in Phathom Pharmaceuticals. Looking at our data, we can see that the largest shareholder is Frazier Life Sciences Management, LP with 16% of shares outstanding. Meanwhile, the second and third largest shareholders, hold 9.5% and 4.5%, of the shares outstanding, respectively.

On further inspection, we found that more than half the company's shares are owned by the top 9 shareholders, suggesting that the interests of the larger shareholders are balanced out to an extent by the smaller ones.

While studying institutional ownership for a company can add value to your research, it is also a good practice to research analyst recommendations to get a deeper understand of a stock's expected performance. There are plenty of analysts covering the stock, so it might be worth seeing what they are forecasting, too.

Insider Ownership Of Phathom Pharmaceuticals

The definition of company insiders can be subjective and does vary between jurisdictions. Our data reflects individual insiders, capturing board members at the very least. Management ultimately answers to the board. However, it is not uncommon for managers to be executive board members, especially if they are a founder or the CEO.

Most consider insider ownership a positive because it can indicate the board is well aligned with other shareholders. However, on some occasions too much power is concentrated within this group.

We can see that insiders own shares in Phathom Pharmaceuticals, Inc.. It is a pretty big company, so it is generally a positive to see some potentially meaningful alignment. In this case, they own around US$38m worth of shares (at current prices). If you would like to explore the question of insider alignment, you can click here to see if insiders have been buying or selling.

General Public Ownership

The general public-- including retail investors -- own 20% stake in the company, and hence can't easily be ignored. While this size of ownership may not be enough to sway a policy decision in their favour, they can still make a collective impact on company policies.

Private Equity Ownership

With a stake of 25%, private equity firms could influence the Phathom Pharmaceuticals board. Some investors might be encouraged by this, since private equity are sometimes able to encourage strategies that help the market see the value in the company. Alternatively, those holders might be exiting the investment after taking it public.

Next Steps:

While it is well worth considering the different groups that own a company, there are other factors that are even more important. To that end, you should be aware of the 1 warning sign we've spotted with Phathom Pharmaceuticals .

If you are like me, you may want to think about whether this company will grow or shrink. Luckily, you can check this free report showing analyst forecasts for its future.

NB: Figures in this article are calculated using data from the last twelve months, which refer to the 12-month period ending on the last date of the month the financial statement is dated. This may not be consistent with full year annual report figures.

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