Phathom 製藥公司
US ˙ NasdaqGS ˙ US71722W1071

SecurityPHAT / Phathom Pharmaceuticals, Inc.
InstitutionSquarepoint Ops LLC
Latest Disclosed Ownership275,161 shares
Latest Disclosed Value $ 3,057,039
Squarepoint Ops LLC ownership in PHAT / Phathom Pharmaceuticals, Inc.

On May 15, 2026 - Squarepoint Ops LLC filed a 13F-HR form disclosing ownership of 275,161 shares of Phathom Pharmaceuticals, Inc. (US:PHAT) valued at $3,057,039 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 14, 2024 disclosing 0 shares of Phathom Pharmaceuticals, Inc.. The current value of the position is $2,787,381 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F PHATHOM PHARMACEUTICALS COM 71722W107 275,161 275,161 3,057 0.0036
2024-02-14 2023-12-31 13F PHATHOM PHARMACEUTICALS COM 71722W107 0 -18,815 -100.00 0 -100.00
2023-11-14 2023-09-30 13F PHATHOM PHARMACEUTICALS COM 71722W107 18,815 18,815 195 0.0005
2023-05-15 2023-03-31 13F PHATHOM PHARMACEUTICALS COM 71722W107 0 -12,296 -100.00 0 -100.00
2023-02-14 2022-12-31 13F PHATHOM PHARMACEUTICALS COM 71722W107 12,296 -22,110 -64.26 138 -64.04 0.0005
2022-11-14 2022-09-30 13F PHATHOM PHARMACEUTICALS COM 71722W107 34,406 18,529 116.70 381 184.33 0.0019
2022-08-15 2022-06-30 13F PHATHOM PHARMACEUTICALS COM 71722W107 15,877 15,877 134 0.0007
2021-08-16 2021-06-30 13F PHATHOM PHARMACEUTICALS COM 71722W107 0 -11,186 -100.00 0 -100.00
2021-05-17 2021-03-31 13F PHATHOM PHARMACEUTICALS COM 71722W107 11,186 -17,387 -60.85 420 -55.74 0.0025
2021-02-16 2020-12-31 13F PHATHOM PHARMACEUTICALS COM 71722W107 28,573 28,573 949 0.0071
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.