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Phathom Pharmaceuticals (PHAT) Institutional Ownership

Phathom Pharmaceuticals logo
$7.32 -0.04 (-0.49%)
As of 10:47 AM Eastern
This is a fair market value price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Phathom Pharmaceuticals (NASDAQ:PHAT)

Current
Institutional Ownership
Percentage
99.01%
Number of
Institutional Buyers
(last 12 months)
104
Total
Institutional Inflows
(last 12 months)
$259.56M
Number of
Institutional Sellers
(last 12 months)
37
Total
Institutional Outflows
(last 12 months)
$89.46M
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PHAT Institutional Buying and Selling by Quarter

Phathom Pharmaceuticals Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/9/2026Opaleye Management Inc.185,589$2.01M0.2%N/A0.229%
9/9/2026Engineers Gate Manager LP118,257$1.28M0.0%+60.1%0.146%
9/9/2026NewEdge Advisors LLC203,962$2.21M0.0%+11.5%0.252%
9/9/2026Squarepoint Ops LLC31,595$343K0.0%-88.5%0.039%
8/21/2026Pale Fire Capital SE49,713$539K0.0%N/A0.061%
8/19/2026Hsbc Holdings PLC709,695$7.70M0.0%N/A0.877%
8/19/2026Wellington Management Group LLP132,284$1.44M0.0%+18.4%0.164%
8/18/2026Stonepine Capital Management LLC85,010$922.36K0.0%N/A0.105%
8/17/2026Bank of America Corp DE151,015$1.64M0.0%N/A0.187%
8/15/2026Man Group plc48,679$528K0.0%N/A0.060%
8/15/2026Jupiter Topco LLC21,500$233K0.0%N/A0.027%
8/14/2026ADAR1 Capital Management LLC42,900$465K0.0%N/A0.053%
8/14/2026Hsbc Holdings PLC709,695$7.70M0.0%N/A0.877%
8/14/2026Legal & General Group Plc32,738$355K0.0%N/A0.040%
8/14/2026The Manufacturers Life Insurance Company13,631$148K0.0%N/A0.017%
8/12/2026Quantbot Technologies LP42,755$464K0.0%N/A0.053%
8/11/2026Allworth Financial LP10,443$113K0.0%N/A0.013%
8/10/2026Tocqueville Asset Management L.P.12,000$130K0.0%N/A0.015%
8/8/2026Carlyle Group Inc.3,496,808$37.94M0.4%N/A4.322%
8/7/2026BlackRock Inc.4,525,129$49.10M0.0%N/A5.593%
8/7/2026Deutsche Bank AG50,205$545K0.0%N/A0.062%
8/7/2026Persistent Asset Partners Ltd47,663$517K0.2%N/A0.059%
8/6/2026Bank of New York Mellon Corp152,313$1.65M0.0%N/A0.188%
8/6/2026State of Wyoming17,639$191K0.0%N/A0.022%
8/6/2026GSA Capital Partners LLP30,138$327K0.0%N/A0.037%
7/10/2026Wasatch Advisors LP1,307,247$14.18M0.1%-2.5%1.639%
7/9/2026Hennion & Walsh Asset Management Inc.327,278$3.55M0.1%+124.3%0.410%
6/3/2026NewEdge Advisors LLC183,000$2.03M0.0%-8.9%0.229%
5/29/2026Perceptive Advisors LLC925,000$10.28M0.2%N/A1.160%
5/28/2026Avidity Partners Management LP249,390$2.77M0.6%+21.0%0.313%
5/19/2026NewEdge Advisors LLC183,000$2.03M0.0%-8.9%0.229%
5/19/2026Bank of America Corp DE208,115$2.31M0.0%-19.6%0.261%
5/18/2026Royal Bank of Canada5,766$64K0.0%-74.4%0.007%
5/18/2026EcoR1 Capital LLC625,000$6.94M0.3%N/A0.784%
5/16/2026Quantinno Capital Management LP11,536$128K0.0%N/A0.014%
5/16/2026SummitTX Capital L.P.995,885$11.06M0.3%+92.3%1.249%
5/16/2026Lazard Asset Management LLC14,671$163K0.0%N/A0.018%
5/14/2026Renaissance Technologies LLC305,800$3.40M0.0%N/A0.383%
5/14/2026State of Wyoming4,936$55K0.0%N/A0.006%
5/7/2026KBC Group NV77,139$857K0.0%N/A0.097%
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5/7/2026Swiss National Bank92,600$1.03M0.0%+10.2%0.116%
5/6/2026Kera Capital Partners Inc.26,826$298K0.0%+10.6%0.034%
5/5/2026Bank of New York Mellon Corp124,018$1.38M0.0%+0.9%0.155%
4/30/2026Summit Securities Group LLC3,048$34K0.0%N/A0.004%
4/27/2026Simplify Asset Management Inc.262,386$2.92M0.0%-18.5%0.330%
4/27/2026Private Advisor Group LLC10,180$113K0.0%-30.2%0.013%
4/21/2026Wasatch Advisors LP1,340,916$14.90M0.1%+0.7%1.688%
2/23/2026Kera Capital Partners Inc.24,255$402K0.1%-19.3%0.034%
2/23/2026Virtu Financial LLC15,540$258K0.0%N/A0.022%
2/19/2026Invesco Ltd.3,920,446$65.04M0.0%+1.4%5.489%
2/18/2026XTX Topco Ltd39,400$654K0.0%-27.8%0.055%
2/18/2026VARCOV Co.86,759$1.44M0.6%N/A0.121%
2/18/2026Virtus Investment Advisers LLC46,937$779K0.2%+5.9%0.066%
2/18/2026Wellington Management Group LLP134,546$2.23M0.0%-8.1%0.188%
2/18/2026SummitTX Capital L.P.517,820$8.59M0.3%+34.2%0.725%
2/18/2026Tudor Investment Corp ET AL28,554$474K0.0%-16.2%0.040%
2/18/2026Millennium Management LLC2,082,180$34.54M0.0%-59.0%2.915%
2/18/2026Janus Henderson Group PLC21,500$357K0.0%N/A0.030%
2/18/2026Engineers Gate Manager LP44,258$734K0.0%N/A0.062%
2/18/2026Catalio Capital Management LP698,996$11.60M2.1%-38.1%0.979%
2/18/2026Balyasny Asset Management L.P.207,085$3.44M0.0%-29.8%0.290%
2/18/2026683 Capital Management LLC1,785,000$29.61M1.3%-1.9%2.499%
2/18/20269823 Capital L.P.10,429$173K0.1%N/A0.015%
2/17/2026Schonfeld Strategic Advisors LLC30,944$513K0.0%N/A0.043%
2/17/2026AQR Capital Management LLC54,448$903K0.0%+3.5%0.076%
2/17/2026Jain Global LLC21,737$361K0.0%N/A0.030%
2/17/2026Trexquant Investment LP136,824$2.27M0.0%+75.0%0.192%
2/17/2026Jump Financial LLC17,408$289K0.0%N/A0.024%
2/17/2026Price T Rowe Associates Inc. MD37,071$616K0.0%+16.1%0.052%
2/17/2026California State Teachers Retirement System40,143$666K0.0%+1,288.6%0.056%
2/17/2026State of Wisconsin Investment Board15,285$254K0.0%N/A0.021%
2/17/2026ExodusPoint Capital Management LP22,401$372K0.0%-68.6%0.031%
2/17/2026Royal Bank of Canada22,554$374K0.0%-86.1%0.032%
2/17/2026Graham Capital Management L.P.12,867$213K0.0%N/A0.018%
2/17/2026Persistent Asset Partners Ltd12,916$214K0.1%N/A0.018%
2/16/2026Next Century Growth Investors LLC393,774$6.53M0.5%N/A0.551%
2/16/2026Entropy Technologies LP11,000$182K0.0%N/A0.015%
2/16/2026Avidity Partners Management LP206,076$3.42M1.0%-32.7%0.289%
2/16/2026Barclays PLC84,859$1.41M0.0%-33.9%0.119%
2/13/2026Kestra Advisory Services LLC2,275$38K0.0%N/A0.003%
2/13/2026The Manufacturers Life Insurance Company 12,438$206K0.0%-14.9%0.017%
2/13/2026CANADA LIFE ASSURANCE Co6,818$113K0.0%N/A0.010%
2/13/2026Stifel Financial Corp51,661$857K0.0%+160.0%0.072%
2/13/2026Southeast Asset Advisors LLC42,874$711K0.1%N/A0.060%
2/13/2026Bridgefront Capital LLC16,981$282K0.1%N/A0.024%
2/13/2026Rafferty Asset Management LLC13,855$230K0.0%N/A0.019%
2/13/2026Birchview Capital LP195,000$3.24M1.9%+129.4%0.273%
2/13/2026Charles Schwab Investment Management Inc.397,910$6.60M0.0%+8.7%0.557%
2/13/2026State Street Corp1,149,536$19.07M0.0%+9.1%1.610%
2/13/2026Caitong International Asset Management Co. Ltd1,606$27K0.1%N/A0.002%
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2/13/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC30,631$508K0.0%N/A0.043%
2/13/2026Wells Fargo & Company MN68,016$1.13M0.0%+26.8%0.095%
2/12/2026Wasatch Advisors LP1,331,669$22.09M0.1%-13.4%1.865%
2/12/2026HRT Financial LP27,010$448K0.0%+19.9%0.038%
2/12/2026Tocqueville Asset Management L.P.34,700$576K0.0%+40.5%0.049%
2/12/2026Ensign Peak Advisors Inc2,352,020$39.02M0.1%-6.0%3.293%
2/12/2026New York State Common Retirement Fund41,756$693K0.0%+287.7%0.058%
2/12/2026Campbell & CO Investment Adviser LLC115,284$1.91M0.1%N/A0.161%
2/12/2026Swiss National Bank84,000$1.39M0.0%N/A0.118%
2/12/2026Nuveen LLC108,846$1.81M0.0%-1.1%0.152%


PHAT Institutional Ownership - Frequently Asked Questions

During the previous two years, 170 institutional investors and hedge funds held shares of Phathom Pharmaceuticals. The most heavily invested institutionals were Frazier Life Sciences Management L.P. ($119.55M), Invesco Ltd. ($65.04M), Vanguard Group Inc. ($52.71M), BlackRock Inc. ($49.10M), Jennison Associates LLC ($44.16M), Ensign Peak Advisors Inc ($39.02M), and Carlyle Group Inc. ($37.94M).Learn more on Phathom Pharmaceuticals' institutional investors.

99.01% of Phathom Pharmaceuticals' stock is owned by institutional investors. Learn more on PHAT's institutional investor holdings.

Of the 155 institutional investors that purchased Phathom Pharmaceuticals' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: BlackRock Inc. ($4.53M), Jennison Associates LLC ($4.30M), Carlyle Group Inc. ($3.50M), Millennium Management LLC ($2.86M), Frazier Life Sciences Management L.P. ($2.36M), Wasatch Advisors LP ($1.64M), and Hsbc Holdings PLC ($1.42M).

Institutional investors have bought a total of 21,760,708 shares in the last 24 months. This purchase volume represents approximately $259.56M in transactions.

Of the 37 institutional investors that sold Phathom Pharmaceuticals' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Millennium Management LLC ($3.00M), Catalio Capital Management LP ($429.53K), Propel Bio Management LLC ($370K), Invesco Ltd. ($275.10K), Simplify Asset Management Inc. ($259.55K), Squarepoint Ops LLC ($243.57K), and Wasatch Advisors LP ($239.22K).

Institutional investors have sold a total of 5,825,645 shares in the last 24 months. This volume of shares sold represents approximately $89.46M in transactions.


Related Companies

Institutional ownership data for NASDAQ:PHAT is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/9/2026. New 13F filings are added each quarter as they're published.
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