PHOENIX BIOTECH ACQUISITION CEROW
*W EXP 09/01/202 · Equity WRT · CUSIP 71902K113
- SectorHealth care
- IndustryBiological Products, (No Diagnostic Substances)
- HeadquartersSouth San Francisco, CA
- 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. Holder counts are more reliable. Implied quarter-end price ≈ $0.02. Options: 1 managers hold calls ($2.6k notional), 0 hold puts (—).
Trends to Q2 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 45 |
| Q4 2022 | 51 |
| Q1 2023 | 48 |
| Q2 2023 | 45 |
| Q3 2023 | 45 |
| Q4 2023 | 42 |
| Q1 2024 | 39 |
| Q2 2024 | 36 |
| Q3 2024 | 32 |
| Q4 2024 | 28 |
| Q1 2025 | 27 |
| Q2 2025 | 24 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2023 | 1 | 10 |
| Q4 2023 | 5 | 9 |
| Q1 2024 | 9 | 17 |
| Q2 2024 | 7 | 9 |
| Q3 2024 | 4 | 5 |
| Q4 2024 | 0 | 8 |
| Q1 2025 | 2 | 6 |
| Q2 2025 | 4 | 7 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $555 | $0 | 0.00 |
| Q4 2024 | $903 | $0 | 0.00 |
| Q1 2025 | $1.6k | $0 | 0.00 |
| Q2 2025 | $2.6k | $0 | 0.00 |
Biggest buyers
| TORONTO DOMINION BANK | New | +381.3k |
| CLEAR STREET LLC | Added | +49.4k |
| Virtu Financial LLC | New | +20.5k |
| Fortress Financial Solutions, LLC | New | +10.0k |
Biggest sellers
| Periscope Capital Inc. | Sold out | -274.0k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Sold out | -192.9k |
| Yakira Capital Management, Inc. | Sold out | -50.0k |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | Sold out | -25.0k |
| Schonfeld Strategic Advisors LLC | Sold out | -15.0k |
| Walleye Trading LLC | Sold out | -13.3k |
| WOLVERINE ASSET MANAGEMENT LLC | Reduced | -10.0k |
Biggest calls
| MILLENNIUM MANAGEMENT LLC | Unchanged | $2.6k108.8k shares |
Biggest puts
| None |
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.
No one currently above 5% in the filings since 19 Dec 2024.
Fell to 5% or below in the last year: Tibbs Isaiah (4.6%, 2026-08-14)
Insider purchases and sales in Q2 2025
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.
None reported in Q2 2025.
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| CANTOR FITZGERALD, L. P. 0.00% of their portfolio | 441.0k $10.5k | Unchanged |
| TORONTO DOMINION BANK 0.00% of their portfolio | 381.3k $9.1k | New |
| MMCAP International Inc. SPC 0.00% of their portfolio | 375.0k $8.9k | Unchanged |
| Saba Capital Management, L.P. 0.00% of their portfolio | 295.9k $7.0k | Unchanged |
| Clear Street Derivatives LLC 0.05% of their portfolio | 268.1k $6.4k | Unchanged |
| Linden Advisors LP 0.00% of their portfolio | 250.0k $5.7k | Unchanged |
| Blue Owl Capital Holdings LP 0.00% of their portfolio | 224.9k $5.4k | Unchanged |
| CLEAR STREET LLC 0.00% of their portfolio | 193.8k $4.6k | Added +49.4k |
| Q Global Advisors, LLC 0.00% of their portfolio | 170.8k $4.0k | Unchanged |
| Context Capital Management, LLC 0.00% of their portfolio | 122.0k $2.9k | Unchanged |
| NEXPOINT ASSET MANAGEMENT, L.P. 0.00% of their portfolio | 108.7k $2.6k | Unchanged |
| PICTON MAHONEY ASSET MANAGEMENT 0.00% of their portfolio | 75.0k $1.0k | Unchanged |
| Westchester Capital Management, LLC 0.00% of their portfolio | 75.0k $1.6k | Unchanged |
| TENOR CAPITAL MANAGEMENT Co., L.P. 0.00% of their portfolio | 50.0k $1.2k | Unchanged |
| Parallel Advisors, LLC 0.00% of their portfolio | 50.0k $1.2k | Unchanged |
| WOLVERINE ASSET MANAGEMENT LLC 0.00% of their portfolio | 33.8k $804 | Reduced -10.0k |
| WHITEBOX ADVISORS LLC 0.00% of their portfolio | 23.2k $554 | Unchanged |
| Virtu Financial LLC 0.00% of their portfolio | 20.5k $0 | New |
| DUPONT CAPITAL MANAGEMENT CORP 0.00% of their portfolio | 12.5k $263 | Unchanged |
| Calamos Advisors LLC 0.00% of their portfolio | 12.5k $263 | Unchanged |
| Silver Rock Financial LP 0.00% of their portfolio | 12.2k $291 | Unchanged |
| Fortress Financial Solutions, LLC 0.00% of their portfolio | 10.0k $238 | New |
| Ancora Advisors LLC 0.00% of their portfolio | 2.5k $59 | Unchanged |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. — of their portfolio | 0 $0 | Unchanged |