REGENXBIO INC RGNX
COM · Common Stock · CUSIP 75901B107 · ISIN US75901B1070
- SectorHealth care
- IndustryBiological Products, (No Diagnostic Substances)
- HeadquartersRockville, MD
- 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 ($17.1k this quarter). Holder counts are more reliable. Shares outstanding: 49.4m as of 2024-07-25, 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 ≈ $11.70. Options: 6 managers hold calls ($850.4k notional), 7 hold puts ($1.0m).
Trends to Q2 2024
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 183 |
| Q4 2022 | 182 |
| Q1 2023 | 175 |
| Q2 2023 | 168 |
| Q3 2023 | 161 |
| Q4 2023 | 172 |
| Q1 2024 | 189 |
| Q2 2024 | 182 |
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 | 86 | 88 |
| Q1 2023 | 78 | 90 |
| Q2 2023 | 79 | 83 |
| Q3 2023 | 79 | 77 |
| Q4 2023 | 74 | 82 |
| Q1 2024 | 99 | 75 |
| Q2 2024 | 96 | 78 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2023 | $4.5m | $2.1m | 0.46 |
| Q4 2023 | $1.7m | $2.0m | 1.16 |
| Q1 2024 | $2.4m | $1.4m | 0.57 |
| Q2 2024 | $850.4k | $1.0m | 1.22 |
Biggest buyers
| BlackRock Inc. | Added | +1.0m |
| Assenagon Asset Management S.A. | Added | +588.8k |
| Balyasny Asset Management L.P. | Added | +379.8k |
| VANGUARD GROUP INC | Added | +236.9k |
| Integral Health Asset Management, LLC | Added | +190.0k |
| GSA CAPITAL PARTNERS LLP | New | +151.8k |
| MILLENNIUM MANAGEMENT LLC | Added | +140.7k |
| Squarepoint Ops LLC | Added | +126.2k |
| Hudson Bay Capital Management LP | Added | +120.1k |
| JANE STREET GROUP, LLC | New | +95.0k |
Biggest sellers
| MORGAN STANLEY | Reduced | -2.8m |
| JPMORGAN CHASE & CO | Reduced | -1.4m |
| STATE STREET CORP | Reduced | -249.4k |
| Mirae Asset Global Investments Co., Ltd. | Reduced | -168.7k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Sold out | -165.1k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Reduced | -157.5k |
| CITIGROUP INC | Reduced | -143.8k |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Reduced | -139.9k |
| Schonfeld Strategic Advisors LLC | Reduced | -134.7k |
| PANAGORA ASSET MANAGEMENT INC | Reduced | -114.4k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $270.3k23.1k shares |
| CITADEL ADVISORS LLC | Reduced | $212.9k18.2k shares |
| Caption Management, LLC | Reduced | $181.3k15.5k shares |
| SIMPLEX TRADING, LLC | Added | $180.0k15.4k shares |
| GROUP ONE TRADING LLC | Reduced | $5.8k500 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $391.9k33.5k shares |
| JANE STREET GROUP, LLC | New | $236.3k20.2k shares |
| Caption Management, LLC | Reduced | $181.3k15.5k shares |
| CITADEL ADVISORS LLC | Reduced | $108.8k9.3k shares |
| SIMPLEX TRADING, LLC | Added | $101.0k8.7k shares |
| GROUP ONE TRADING LLC | Reduced | $22.2k1.9k 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 |
|---|---|
| Redmile Group, LLC 13G · passive investor filed 2025-08-14 | 9.9% |
| BlackRock, Inc. 13G · institution -3.7 pts · filed 2025-04-24 | 7.3% |
| JPMORGAN CHASE & CO 13G · institution +0.9 pts · filed 2026-10-13 | 5.3% |
| STATE STREET CORP 13G · institution +0.9 pts · filed 2026-05-12 | 5.3% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27), BlackRock Portfolio Management LLC (4.1%, 2026-01-21; now reported by BlackRock, Inc.)
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 | — | 1 | $913.7k | — |
| Q4 2022 | 0 | — | 0 | — | — |
| Q1 2023 | 0 | — | 1 | $69.6k | — |
| Q2 2023 | 0 | — | 0 | — | — |
| Q3 2023 | 0 | — | 0 | — | — |
| Q4 2023 | 0 | — | 1 | $886.0k | $886.0k |
| Q1 2024 | 0 | — | 2 | $1.9m | $1.9m |
| Q2 2024 | 0 | — | 1 | $510.0k | $510.0k |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2024-05-14 | Mills Kenneth T. President and CEO, director | Sold plan | $237.2k15.0k shares |
| 2024-04-15 | Mills Kenneth T. President and CEO, director | Sold plan | $272.9k15.0k 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 |
|---|---|---|
| BlackRock Inc. 0.00% of their portfolio | 8.6m $100.7m | Added +1.0m |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 6.0m $70.5m | Reduced -1.4m |
| VANGUARD GROUP INC 0.00% of their portfolio | 5.1m $59.8m | Added +236.9k |
| Redmile Group, LLC 3.23% of their portfolio | 4.6m $53.5m | Added +18.2k |
| STATE STREET CORP 0.00% of their portfolio | 2.9m $33.6m | Reduced -249.4k |
| Avidity Partners Management LP 0.65% of their portfolio | 1.3m $15.2m | Unchanged |
| MORGAN STANLEY 0.00% of their portfolio | 1.2m $13.8m | Reduced -2.8m |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 1.1m $13.0m | Reduced -89.6k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 1.0m $12.2m | Added +94.1k |
| Integral Health Asset Management, LLC 1.11% of their portfolio | 950.0k $11.1m | Added +190.0k |
| Aquilo Capital Management, LLC 10.22% of their portfolio | 906.2k $10.6m | Unchanged |
| Assenagon Asset Management S.A. 0.02% of their portfolio | 816.4k $9.6m | Added +588.8k |
| Balyasny Asset Management L.P. 0.02% of their portfolio | 806.7k $9.4m | Added +379.8k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 649.2k $7.6m | Reduced -74.4k |
| MPM BIOIMPACT LLC 1.01% of their portfolio | 557.1k $6.5m | Added +8.0k |
| Sonic GP LLC 10.94% of their portfolio | 453.1k $5.3m | Reduced -90.0k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 432.2k $5.1m | Added +465 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 380.7k $4.5m | Added +37.1k |
| WS MANAGEMENT LLLP 0.42% of their portfolio | 379.1k $4.4m | Unchanged |
| RTW INVESTMENTS, LP 0.06% of their portfolio | 350.0k $4.1m | Unchanged |
| Bank of New York Mellon Corp 0.00% of their portfolio | 339.5k $4.0m | Added +28.8k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 306.5k $3.6m | Added +140.7k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 274.8k $3.2m | Added +4.2k |
| Artal Group S.A. 0.08% of their portfolio | 250.0k $2.9m | Unchanged |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 225.4k $2.6m | Added +9.2k |
| ArchPoint Investors 0.99% of their portfolio | 224.3k $2.6m | Unchanged |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 196.5k $2.3m | Added +33.8k |
| Cubist Systematic Strategies, LLC 0.04% of their portfolio | 188.2k $2.2m | Added +79.7k |
| PANAGORA ASSET MANAGEMENT INC 0.01% of their portfolio | 185.8k $2.2m | Reduced -114.4k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 179.7k $2.1m | Added +89.8k |
| Ghost Tree Capital, LLC 0.69% of their portfolio | 170.0k $2.0m | Added +50.0k |
| Hudson Bay Capital Management LP 0.01% of their portfolio | 165.0k $1.9m | Added +120.1k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 158.0k $1.8m | Reduced -205 |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.01% of their portfolio | 152.4k $1.8m | Reduced -139.9k |
| GSA CAPITAL PARTNERS LLP 0.12% of their portfolio | 151.8k $1.8m | New |
| Invesco Ltd. 0.00% of their portfolio | 149.4k $1.7m | Added +7.4k |
| MACQUARIE GROUP LTD 0.00% of their portfolio | 149.0k $1.7m | Unchanged |
| NORGES BANK 0.00% of their portfolio | 147.5k $1.7m | Reduced -73.0k |
| Squarepoint Ops LLC 0.01% of their portfolio | 146.3k $1.7m | Added +126.2k |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 142.7k $1.7m | Reduced -13.5k |
| Hennion & Walsh Asset Management, Inc. 0.08% of their portfolio | 134.2k $1.6m | Added +27.9k |
| STIFEL FINANCIAL CORP 0.00% of their portfolio | 131.7k $1.5m | Added +41.1k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 126.4k $1.5m | Added +17.9k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 118.5k $1.4m | Added +9.0k |
| Legal & General Group Plc 0.00% of their portfolio | 117.6k $1.4m | Added +5.7k |
| Nuveen Asset Management, LLC 0.00% of their portfolio | 112.3k $1.3m | Added +6.5k |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 110.0k $1.3m | Added +67.0k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 109.7k $1.3m | First filing |
| Rafferty Asset Management, LLC 0.00% of their portfolio | 103.2k $1.2m | Reduced -76.7k |
| UBS Group AG 0.00% of their portfolio | 103.1k $1.2m | Reduced -38.3k |
| MOORE CAPITAL MANAGEMENT, LP 0.03% of their portfolio | 100.0k $1.2m | Unchanged |
| Woodline Partners LP 0.01% of their portfolio | 100.0k $1.2m | Reduced -46.3k |
| Public Sector Pension Investment Board 0.01% of their portfolio | 99.7k $1.2m | Added +15.7k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 95.0k $1.1m | New |
| Allianz Asset Management GmbH 0.00% of their portfolio | 92.6k $1.1m | New |
| Trexquant Investment LP 0.02% of their portfolio | 89.6k $1.0m | Added +39.0k |
| Swiss National Bank 0.00% of their portfolio | 81.5k $953.5k | Unchanged |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.00% of their portfolio | 78.4k $917.7k | Reduced -157.5k |
| WINTON GROUP Ltd 0.06% of their portfolio | 76.8k $899.0k | Added +34.1k |
| TWO SIGMA ADVISERS, LP 0.00% of their portfolio | 75.9k $888.0k | Added +18.7k |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 74.9k $876.0k | Added +10.8k |
| DekaBank Deutsche Girozentrale 0.00% of their portfolio | 74.6k $864.0k | Unchanged |
| Jump Financial, LLC 0.02% of their portfolio | 73.0k $853.8k | New |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 71.0k $830.2k | Added +32.4k |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) 0.02% of their portfolio | 70.2k $821.3k | Not comparable |
| Raymond James Financial Services Advisors, Inc. 0.00% of their portfolio | 62.4k $730.6k | Added +5.2k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 59.0k $690.6k | Unchanged |
| Walleye Capital LLC 0.01% of their portfolio | 55.6k $650.2k | New |
| XTX Topco Ltd 0.05% of their portfolio | 52.7k $616.0k | Added +39.4k |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 51.4k $601.0k | Added +1.3k |
| NAPATREE CAPITAL LLC 0.47% of their portfolio | 49.8k $582.2k | Added +4.2k |
| Schonfeld Strategic Advisors LLC 0.00% of their portfolio | 49.1k $574.7k | Reduced -134.7k |
| Dynamic Technology Lab Private Ltd 0.06% of their portfolio | 49.0k $573.0k | Added +32.0k |
| BARCLAYS PLC 0.00% of their portfolio | 48.1k $562.5k | Reduced -1.4k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 45.1k $528.0k | Unchanged |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 44.4k $519.0k | Added +7.2k |
| CITIGROUP INC 0.00% of their portfolio | 42.9k $502.0k | Reduced -143.8k |
| ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio | 42.3k $494.0k | New |
| AlphaQuest LLC 0.07% of their portfolio | 42.0k $491.4k | Added +41.6k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 41.1k $481.0k | Reduced -142 |
| Rockefeller Capital Management L.P. 0.00% of their portfolio | 41.0k $479.3k | Reduced -16 |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 39.4k $461.0k | Reduced -21.9k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 39.1k $457.4k | New |
| Y-Intercept (Hong Kong) Ltd 0.02% of their portfolio | 38.8k $454.5k | New |
| Thrivent Financial for Lutherans 0.00% of their portfolio | 37.6k $440.0k | Added +2.5k |
| RAYMOND JAMES & ASSOCIATES 0.00% of their portfolio | 37.2k $435.5k | Reduced -17.9k |
| Lion Point Capital, LP 1.33% of their portfolio | 36.2k $424.1k | Added +3.8k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 34.8k $407.7k | Added +5.2k |
| PDT Partners, LLC 0.04% of their portfolio | 34.4k $402.6k | Added +25 |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 32.7k $382.0k | Added +5.8k |
| Sigma Planning Corp 0.01% of their portfolio | 32.5k $380.4k | Added +4.9k |
| Steward Partners Investment Advisory, LLC 0.00% of their portfolio | 27.9k $326.0k | Added +19.6k |
| MetLife Investment Management, LLC 0.00% of their portfolio | 27.2k $318.1k | Added +6.7k |
| Corebridge Financial, Inc. 0.00% of their portfolio | 26.7k $312.1k | First filing |
| State of Alaska, Department of Revenue 0.00% of their portfolio | 26.6k $311.0k | Added +1.9k |
| TUDOR INVESTMENT CORP ET AL 0.00% of their portfolio | 26.4k $309.0k | New |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 25.7k $300.6k | Reduced -1.4k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 25.0k $292.6k | Added +8.4k |
| JANUS HENDERSON GROUP PLC 0.00% of their portfolio | 24.8k $289.6k | Reduced -206 |
| HARBOR CAPITAL ADVISORS, INC. 0.02% of their portfolio | 24.3k $284.0k | Reduced -30.3k |