PHATHOM PHARMACEUTICALS INC PHAT
COM · Common Stock · CUSIP 71722W107 · ISIN US71722W1071
- SectorHealth care
- IndustryPharmaceutical Preparations
- HeadquartersFlorham Park, NJ
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($9.0m this quarter). Holder counts are more reliable. Shares outstanding: 59.6m as of 2024-08-06, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $10.30. Options: 5 managers hold calls ($5.2m notional), 5 hold puts ($605.6k).
Trends to Q2 2024
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 94 |
| Q4 2022 | 87 |
| Q1 2023 | 85 |
| Q2 2023 | 104 |
| Q3 2023 | 111 |
| Q4 2023 | 118 |
| Q1 2024 | 115 |
| Q2 2024 | 115 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 38 | 41 |
| Q1 2023 | 49 | 35 |
| Q2 2023 | 69 | 29 |
| Q3 2023 | 63 | 31 |
| Q4 2023 | 66 | 39 |
| Q1 2024 | 54 | 50 |
| Q2 2024 | 64 | 37 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2023 | $1.6m | $325.8k | 0.20 |
| Q4 2023 | $415.1k | $77.1k | 0.19 |
| Q1 2024 | $810.7k | $990.6k | 1.22 |
| Q2 2024 | $5.2m | $605.6k | 0.12 |
Biggest buyers
| Portolan Capital Management, LLC | New | +1.1m |
| JENNISON ASSOCIATES LLC | Added | +1.1m |
| GILDER GAGNON HOWE & CO LLC | Added | +454.6k |
| Checkpoint Capital L.P. | Added | +429.8k |
| PRUDENTIAL FINANCIAL INC | New | +352.3k |
| KENNEDY CAPITAL MANAGEMENT LLC | Added | +258.6k |
| VANGUARD GROUP INC | Added | +232.6k |
| ORACLE INVESTMENT MANAGEMENT INC | New | +225.0k |
| Woodline Partners LP | Added | +219.6k |
| GOLDMAN SACHS GROUP INC | Added | +209.9k |
Biggest sellers
| TAKEDA PHARMACEUTICAL CO LTD | Reduced | -1.6m |
| Octagon Capital Advisors LP | Sold out | -455.0k |
| 683 Capital Management, LLC | Reduced | -250.0k |
| MILLENNIUM MANAGEMENT LLC | Sold out | -225.0k |
| Newtyn Management, LLC | Sold out | -165.0k |
| TWO SIGMA INVESTMENTS, LP | Reduced | -164.0k |
| Nuveen Asset Management, LLC | Reduced | -121.0k |
| Avidity Partners Management LP | Reduced | -115.0k |
| D. E. Shaw & Co., Inc. | Sold out | -64.1k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Sold out | -59.4k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $4.8m462.9k shares |
| SIMPLEX TRADING, LLC | Added | $344.0k33.4k shares |
| GROUP ONE TRADING LLC | Reduced | $42.2k4.1k shares |
| CITADEL ADVISORS LLC | Reduced | $25.8k2.5k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $311.1k30.2k shares |
| GROUP ONE TRADING LLC | Reduced | $244.1k23.7k shares |
| CITADEL ADVISORS LLC | Reduced | $48.4k4.7k shares |
| SIMPLEX TRADING, LLC | Reduced | $2.0k200 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
Frazier Life Sciences Public Fund, L.P.
13D · may seek influence
no change · filed 2025-11-04
Stated purposeItem 4 is hereby amended to remove references to "FLSPOF" and the "FLSPOF Shares" from the first paragraph. Full filing |
8.6% |
| BlackRock, Inc. 13G · institution +0.9 pts · filed 2026-07-29 | 5.5% |
Fell to 5% or below in the last year: MILLENNIUM MANAGEMENT LLC (4.2%, 2026-07-20)
Insider purchases and sales in Q2 2024
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2022 | 0 | — | 0 | — | — |
| Q4 2022 | 0 | — | 2 | $35.4k | — |
| Q1 2023 | 1 | $73.7k | 2 | $77.3k | — |
| Q2 2023 | 3 | $191.2k | 1 | $74.5k | $74.5k |
| Q3 2023 | 0 | — | 0 | — | — |
| Q4 2023 | 1 | $58.6k | 1 | $126.3k | — |
| Q1 2024 | 0 | — | 2 | $202.4k | — |
| Q2 2024 | 0 | — | 1 | $38.1k | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2024-04-08 | Henderson Molly CFO and CBO | Sold | $38.1k3.4k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2024
| Manager | Shares | Change |
|---|---|---|
| Frazier Life Sciences Management, L.P. 4.87% of their portfolio | 10.1m $104.1m | Unchanged |
| Medicxi Ventures Management (Jersey) Ltd 22.93% of their portfolio | 7.5m $76.9m | Unchanged |
| Carlyle Group Inc. 3.40% of their portfolio | 3.5m $35.8m | Unchanged |
| Invesco Ltd. 0.01% of their portfolio | 3.1m $32.4m | Reduced -16.3k |
| BlackRock Inc. 0.00% of their portfolio | 2.9m $30.1m | Added +181.0k |
| JENNISON ASSOCIATES LLC 0.02% of their portfolio | 2.8m $28.4m | Added +1.1m |
| Ensign Peak Advisors, Inc 0.04% of their portfolio | 2.2m $23.1m | Reduced -35.2k |
| VANGUARD GROUP INC 0.00% of their portfolio | 2.2m $22.8m | Added +232.6k |
| NEA Management Company, LLC 1.52% of their portfolio | 2.0m $20.2m | Unchanged |
| Avidity Partners Management LP 0.71% of their portfolio | 1.6m $16.7m | Reduced -115.0k |
| TAKEDA PHARMACEUTICAL CO LTD 6.90% of their portfolio | 1.6m $16.0m | Reduced -1.6m |
| GILDER GAGNON HOWE & CO LLC 0.19% of their portfolio | 1.5m $15.2m | Added +454.6k |
| 683 Capital Management, LLC 1.51% of their portfolio | 1.4m $14.4m | Reduced -250.0k |
| Portolan Capital Management, LLC 0.96% of their portfolio | 1.1m $11.6m | New |
| Checkpoint Capital L.P. 5.43% of their portfolio | 875.0k $9.0m | Added +429.8k |
| Propel Bio Management, LLC 5.81% of their portfolio | 869.9k $9.0m | Unchanged |
| Decheng Capital LLC 2.68% of their portfolio | 850.0k $8.8m | Unchanged |
| KENNEDY CAPITAL MANAGEMENT LLC 0.18% of their portfolio | 830.9k $8.6m | Added +258.6k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 806.0k $8.3m | Added +54.7k |
| Woodline Partners LP 0.08% of their portfolio | 786.0k $8.1m | Added +219.6k |
| STATE STREET CORP 0.00% of their portfolio | 785.2k $8.1m | Added +68.0k |
| MORGAN STANLEY 0.00% of their portfolio | 762.6k $7.9m | Added +51.1k |
| Catalys Pacific, LLC 5.61% of their portfolio | 722.0k $7.4m | Unchanged |
| GW&K Investment Management, LLC 0.06% of their portfolio | 600.4k $6.2m | Added +32.4k |
| Ghost Tree Capital, LLC 2.15% of their portfolio | 600.0k $6.2m | Added +115.0k |
| Saturn V Capital Management LP 2.31% of their portfolio | 593.3k $6.1m | Added +92.3k |
| Simplify Asset Management Inc. 0.47% of their portfolio | 521.9k $5.4m | Unchanged |
| StepStone Group LP 0.88% of their portfolio | 422.1k $4.3m | Unchanged |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 417.3k $4.3m | Added +209.9k |
| EAGLE ASSET MANAGEMENT INC 0.02% of their portfolio | 361.5k $3.9m | Added +56.6k |
| PRUDENTIAL FINANCIAL INC 0.01% of their portfolio | 352.3k $3.6m | New |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 303.4k $3.1m | Reduced -164.0k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 285.9k $2.9m | Added +21.4k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 276.7k $2.8m | Reduced -6.5k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 268.7k $2.8m | Reduced -8.2k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 226.6k $2.3m | Added +3.3k |
| ORACLE INVESTMENT MANAGEMENT INC 2.49% of their portfolio | 225.0k $2.3m | New |
| Schonfeld Strategic Advisors LLC 0.01% of their portfolio | 168.3k $1.7m | Added +23.6k |
| Nuveen Asset Management, LLC 0.00% of their portfolio | 141.0k $1.5m | Reduced -121.0k |
| MOORE CAPITAL MANAGEMENT, LP 0.03% of their portfolio | 120.0k $1.2m | Unchanged |
| Bank of New York Mellon Corp 0.00% of their portfolio | 114.7k $1.2m | Added +19.5k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 113.6k $1.2m | Added +54.4k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 112.7k $1.2m | New |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 98.0k $1.0m | Reduced -7.8k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 93.2k $959.5k | Added +80.3k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 78.8k $811.8k | Reduced -46.8k |
| Penn Mutual Asset Management 1.37% of their portfolio | 62.8k $646.9k | Unchanged |
| Swiss National Bank 0.00% of their portfolio | 56.0k $576.8k | Unchanged |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 55.8k $575.2k | Added +30.8k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 55.2k $568.3k | Added +8.1k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 50.1k $516.1k | Added +17.8k |
| UBS Group AG 0.00% of their portfolio | 43.1k $443.8k | Reduced -6.8k |
| INSPIRION WEALTH ADVISORS, LLC 0.06% of their portfolio | 36.6k $377.3k | Added +1.5k |
| Legal & General Group Plc 0.00% of their portfolio | 34.3k $353.5k | Added +223 |
| VIRTUS ADVISERS, LLC 0.15% of their portfolio | 30.1k $309.8k | Added +20.4k |
| Occidental Asset Management, LLC 0.05% of their portfolio | 29.7k $305.6k | Unchanged |
| GSA CAPITAL PARTNERS LLP 0.02% of their portfolio | 29.4k $303.0k | Added +15.2k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 29.1k $299.2k | Added +104 |
| Creative Planning 0.00% of their portfolio | 27.0k $277.6k | Reduced -5.2k |
| FULTON BREAKEFIELD BROENNIMAN LLC 0.02% of their portfolio | 23.6k $242.9k | Unchanged |
| Allworth Financial LP 0.00% of their portfolio | 22.6k $247.1k | Unchanged |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 20.6k $212.0k | Added +1.0k |
| MML INVESTORS SERVICES, LLC 0.00% of their portfolio | 19.6k $202.0k | New |
| Brevan Howard Capital Management LP 0.01% of their portfolio | 18.8k $193.6k | New |
| Corebridge Financial, Inc. 0.00% of their portfolio | 18.4k $189.1k | First filing |
| MetLife Investment Management, LLC 0.00% of their portfolio | 18.3k $188.4k | Added +1.8k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 17.3k $178.3k | Added +5.7k |
| TWO SIGMA ADVISERS, LP 0.00% of their portfolio | 16.3k $167.9k | Reduced -35.3k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 16.3k $167.6k | First filing |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 15.1k $155.2k | Added +809 |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 15.0k $154.6k | New |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 13.9k $143.6k | Added +1.3k |
| Stratos Wealth Advisors, LLC 0.01% of their portfolio | 13.4k $138.4k | Added +938 |
| LVW Advisors, LLC 0.02% of their portfolio | 12.9k $133.0k | New |
| BARCLAYS PLC 0.00% of their portfolio | 12.4k $127.8k | Reduced -15.8k |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 11.7k $120.4k | Added +672 |
| COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio | 11.6k $119.0k | New |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 10.8k $110.9k | Added +4.8k |
| Klingman & Associates, LLC 0.01% of their portfolio | 10.4k $106.9k | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 10.1k $103.7k | Added +3.0k |
| DAVENPORT & Co LLC 0.00% of their portfolio | 10.0k $103.0k | Unchanged |
| STALEY CAPITAL ADVISERS INC 0.00% of their portfolio | 10.0k $103.0k | Unchanged |
| KESTRA PRIVATE WEALTH SERVICES, LLC 0.00% of their portfolio | 10.0k $103.0k | Unchanged |
| CITIGROUP INC 0.00% of their portfolio | 8.9k $91.2k | Added +2.8k |
| EntryPoint Capital, LLC 0.04% of their portfolio | 8.5k $87.6k | Reduced -10.9k |
| GROUP ONE TRADING LLC 0.00% of their portfolio | 7.4k $75.9k | New |
| China Universal Asset Management Co., Ltd. 0.01% of their portfolio | 6.9k $70.8k | Reduced -4.1k |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 5.8k $59.9k | Added +5.2k |
| FNY Investment Advisers, LLC 0.03% of their portfolio | 5.0k $51.0k | Unchanged |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 4.3k $44.0k | Added +2.2k |
| US BANCORP \DE\ 0.00% of their portfolio | 4.1k $42.0k | Added +632 |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 3.1k $31.9k | Unchanged |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 2.8k $29.0k | Unchanged |
| FMR LLC 0.00% of their portfolio | 2.7k $27.4k | Added +572 |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 2.2k $22.8k | Added +2.0k |
| Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio | 1.7k $18.2k | Reduced -12.2k |
| AMALGAMATED BANK 0.00% of their portfolio | 1.1k $11.0k | Unchanged |
| Bear Mountain Capital, Inc. 0.00% of their portfolio | 1.0k $11.7k | Added +800 |
| HUNTINGTON NATIONAL BANK 0.00% of their portfolio | 907 $9.3k | Reduced -71 |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 520 $5.4k | New |