PASSAGE BIO INC PASG
COM NEW · Common Stock · CUSIP 702712209
- SectorHealth care
- IndustryBiological Products, (No Diagnostic Substances)
- HeadquartersPhiladelphia, PA
- 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. Shares outstanding: 3.2m as of 2026-08-05, 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 ≈ $2.60.
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q2 2025 | 2 |
| Q3 2025 | 31 |
| Q4 2025 | 30 |
| Q1 2026 | 35 |
| Q2 2026 | 30 |
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 2025 | 29 | 2 |
| Q4 2025 | 10 | 13 |
| Q1 2026 | 15 | 10 |
| Q2 2026 | 10 | 16 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $17.6k | $0 | 0.00 |
| Q4 2025 | $0 | $0 | — |
| Q1 2026 | $0 | $0 | — |
| Q2 2026 | $0 | $0 | — |
Biggest buyers
| CITADEL ADVISORS LLC | New | +2.9m |
| Balyasny Asset Management L.P. | New | +107.0k |
| Lynx1 Capital Management LP | Added | +50.1k |
| Ikarian Capital, LLC | Added | +31.4k |
| DELTEC ASSET MANAGEMENT LLC | New | +15.0k |
| HRT FINANCIAL LP | New | +12.7k |
| GTS SECURITIES LLC | New | +10.0k |
| BOOTHBAY FUND MANAGEMENT, LLC | Added | +9.6k |
| Verdad Advisers, LP | Added | +8.6k |
| SBI Securities Co., Ltd. | Added | +45 |
Biggest sellers
| Vestal Point Capital, LP | Sold out | -305.0k |
| Eversept Partners, LP | Sold out | -131.6k |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -85.7k |
| Erste Asset Management GmbH | Reduced | -44.6k |
| DIADEMA PARTNERS LP | Sold out | -19.5k |
| UBS Group AG | Reduced | -13.9k |
| XTX Topco Ltd | Sold out | -12.6k |
| Persistent Asset Partners Ltd | Sold out | -5.0k |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | -4.4k |
| ACADIAN ASSET MANAGEMENT LLC | Reduced | -1.7k |
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 |
|---|---|
| Baselake Partners, LP 13G · passive investor new · filed 2026-06-25 | 7.3% |
Fell to 5% or below in the last year: Vestal Point Capital, LP (0.0%, 2026-08-14)
Insider purchases and sales since 1 Apr 2026
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 |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 1 | $1.7k | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 2 | $113.2k | — |
| Q2 2026 | 0 | — | 0 | — | — |
| Q3 2026 | 0 | — | 0 | — | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-06-25 | Nichols Weston +1 10% owner · See footnote | Bought | $206.2k50.1k 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 2026
| Manager | Shares | Change |
|---|---|---|
| CITADEL ADVISORS LLC 0.00% of their portfolio | 2.9m $4.3m | New |
| Lynx1 Capital Management LP 0.38% of their portfolio | 673.8k $3.3m | Added +50.1k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 114.0k $556.1k | Unchanged |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 107.0k $522.3k | New |
| Ikarian Capital, LLC 0.08% of their portfolio | 99.5k $485.6k | Added +31.4k |
| Yiheng Capital Management, L.P. 0.18% of their portfolio | 86.1k $420.2k | Unchanged |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 47.9k $233.7k | Reduced -85.7k |
| Erste Asset Management GmbH 0.00% of their portfolio | 40.7k $197.2k | Reduced -44.6k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 37.0k $180.7k | Reduced -4.4k |
| Verdad Advisers, LP 0.14% of their portfolio | 30.7k $150.0k | Added +8.6k |
| BOOTHBAY FUND MANAGEMENT, LLC 0.00% of their portfolio | 28.4k $138.8k | Added +9.6k |
| BlackRock, Inc. 0.00% of their portfolio | 27.9k $136.2k | Reduced -685 |
| ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio | 22.5k $109.0k | Reduced -1.7k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 17.0k $83.2k | Unchanged |
| DELTEC ASSET MANAGEMENT LLC 0.01% of their portfolio | 15.0k $73.2k | New |
| UBS Group AG 0.00% of their portfolio | 13.6k $66.2k | Reduced -13.9k |
| HRT FINANCIAL LP 0.00% of their portfolio | 12.7k $62.0k | New |
| Fiduciary Trust Co 0.00% of their portfolio | 10.8k $52.5k | Unchanged |
| GTS SECURITIES LLC 0.00% of their portfolio | 10.0k $48.8k | New |
| MORGAN STANLEY 0.00% of their portfolio | 2.4k $11.7k | Reduced -261 |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 638 $3.1k | Unchanged |
| BARCLAYS PLC 0.00% of their portfolio | 212 $1.0k | Unchanged |
| SBI Securities Co., Ltd. 0.00% of their portfolio | 169 $825 | Added +45 |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 115 $561 | Unchanged |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 15 $73 | Unchanged |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 15 $73 | Unchanged |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 12 $59 | Unchanged |
| LRI Investments, LLC 0.00% of their portfolio | 12 $59 | Unchanged |
| TSFG, LLC 0.00% of their portfolio | 5 $0 | Unchanged |
| HARBOUR INVESTMENTS, INC. 0.00% of their portfolio | 3 $15 | Unchanged |