RGNX Institutional Ownership & Shareholders
REGENXBIO INC (RGNX) is currently held by 165 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $500.90M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of RGNX tracked by InsiderSet, reporting ownership valued at approximately $76.64M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $46.06M, representing an estimated loss of -39.90% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 61% of the total disclosed RGNX value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Redmile Group, Llc, State Street Corp, and several other long-term asset managers with concentrated positions in REGENXBIO INC (RGNX).
This page ranks the largest institutional RGNX shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
165
Total Reported Value
$500.90M
Largest Holder
Blackrock, Inc.
Largest Position
$76.64M
Insider Transactions (90d)
5
Latest Filing Quarter
Q2 2026
New Institutional Positions
54
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 6,397,440 | $76,641,333 | $46,061,568 | -$30,579,765 | -39.90% | |
| Redmile Group, Llc | 3.51% | 4,368,804 | $52,338,272 | $31,455,389 | -$20,882,883 | -39.90% | |
| State Street Corp | 0.00% | 2,971,173 | $35,594,653 | $21,392,446 | -$14,202,207 | -39.90% | |
| Jpmorgan Chase & Co | 0.00% | 2,214,169 | $26,193,619 | $15,942,017 | -$10,251,602 | -39.14% | |
| Vanguard Capital Management Llc | 0.00% | 2,107,557 | $25,248,533 | $15,174,410 | -$10,074,123 | -39.90% | |
| Morgan Stanley | 0.00% | 1,953,237 | $23,399,786 | $14,063,306 | -$9,336,480 | -39.90% | |
| Goldman Sachs Group Inc | 0.00% | 1,421,453 | $17,029,007 | $10,234,462 | -$6,794,545 | -39.90% | |
| Aqr Capital Management Llc | 0.01% | 1,378,358 | $16,512,730 | $9,924,178 | -$6,588,552 | -39.90% | |
| Vanguard Portfolio Management Llc | 0.00% | 1,355,554 | $16,239,537 | $9,759,989 | -$6,479,548 | -39.90% | |
| Marshall Wace, Llp | 0.01% | 1,284,950 | $15,393,701 | $9,251,640 | -$6,142,061 | -39.90% | |
| Geode Capital Management, Llc | 0.00% | 1,241,296 | $14,874,704 | $8,937,331 | -$5,937,373 | -39.92% | |
| Integral Health Asset Management, Llc | 0.39% | 800,000 | $9,584,000 | $5,760,000 | -$3,824,000 | -39.90% | |
| Nuveen, Llc | 0.00% | 740,026 | $8,865,511 | $5,328,187 | -$3,537,324 | -39.90% | |
| Dimensional Fund Advisors Lp | 0.00% | 731,586 | $8,763,715 | $5,267,419 | -$3,496,296 | -39.90% | |
| D. E. Shaw & Co., Inc. | 0.01% | 712,814 | $8,539,512 | $5,132,261 | -$3,407,251 | -39.90% | |
| Two Sigma Investments, Lp | 0.01% | 669,808 | $8,024,300 | $4,822,618 | -$3,201,682 | -39.90% | |
| Citadel Advisors Llc | 0.00% | 669,023 | $8,014,896 | $4,816,966 | -$3,197,930 | -39.90% | |
| Stifel Financial Corp | 0.01% | 560,727 | $6,717,524 | $4,037,234 | -$2,680,290 | -39.90% | |
| Bank Of America Corp | 0.00% | 518,545 | $6,212,169 | $3,733,524 | -$2,478,645 | -39.90% | |
| 22Nw, Lp | 5.64% | 492,759 | $5,903,253 | $3,547,865 | -$2,355,388 | -39.90% | |
| Millennium Management Llc | 0.00% | 480,762 | $5,759,529 | $3,461,486 | -$2,298,043 | -39.90% | |
| Pale Fire Capital Se | 0.40% | 466,209 | $5,585,184 | $3,356,705 | -$2,228,479 | -39.90% | |
| Northern Trust Corp | 0.00% | 421,839 | $5,053,632 | $3,037,241 | -$2,016,391 | -39.90% | |
| Charles Schwab Investment Management Inc | 0.00% | 396,450 | $4,749,471 | $2,854,440 | -$1,895,031 | -39.90% | |
| Lazard Asset Management Llc | 0.01% | 370,375 | $4,437,093 | $2,666,700 | -$1,770,393 | -39.90% | |
| Fmr Llc | 0.00% | 342,858 | $4,107,444 | $2,468,578 | -$1,638,866 | -39.90% | |
| Vanguard Fiduciary Trust Co | 0.00% | 337,159 | $4,039,165 | $2,427,545 | -$1,611,620 | -39.90% | |
| Quantinno Capital Management Lp | 0.00% | 300,127 | $3,595,521 | $2,160,914 | -$1,434,607 | -39.90% | |
| Gsk Plc | 0.54% | 271,456 | $3,252,043 | $1,954,483 | -$1,297,560 | -39.90% | |
| Susquehanna International Group, Llp | 0.00% | 264,912 | $3,173,646 | $1,907,366 | -$1,266,280 | -39.90% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 256,686 | $3,075,098 | $1,848,139 | -$1,226,959 | -39.90% |
| Jane Street Group, Llc | 0.00% | 253,493 | $3,036,846 | $1,825,150 | -$1,211,696 | -39.90% | |
| Ubs Group Ag | 0.00% | 249,947 | $2,994,365 | $1,799,618 | -$1,194,747 | -39.90% | |
| Jump Financial, Llc | 0.03% | 239,700 | $2,871,606 | $1,725,840 | -$1,145,766 | -39.90% | |
| Hudson Bay Capital Management Lp | 0.01% | 225,000 | $2,695,500 | $1,620,000 | -$1,075,500 | -39.90% | |
| Archpoint Investors | 0.56% | 222,278 | $2,662,890 | $1,600,402 | -$1,062,488 | -39.90% | |
| Corient Private Wealth Llc | 0.00% | 217,661 | $2,607,580 | $1,567,159 | -$1,040,421 | -39.90% | |
| Deutsche Bank Ag\ | 0.00% | 207,835 | $2,489,864 | $1,496,412 | -$993,452 | -39.90% | |
| Walleye Capital Llc | 0.01% | 203,726 | $2,440,637 | $1,466,827 | -$973,810 | -39.90% | |
| Nomura Asset Management International Inc. | 0.00% | 149,000 | $1,785,000 | $1,072,800 | -$712,200 | -39.90% | |
| Ieq Capital, Llc | 0.01% | 141,469 | $1,694,798 | $1,018,577 | -$676,221 | -39.90% | |
| Bank Of New York Mellon Corp | 0.00% | 134,194 | $1,607,650 | $966,197 | -$641,453 | -39.90% | |
| Invesco Ltd. | 0.00% | 133,851 | $1,603,535 | $963,727 | -$639,808 | -39.90% | |
| Y-Intercept (Hong Kong) Ltd | 0.03% | 195,624 | $1,473,049 | $1,408,493 | -$64,556 | -4.38% | |
| Russell Investments Group, Ltd. | 0.00% | 121,359 | $1,453,879 | $873,785 | -$580,094 | -39.90% | |
| Susquehanna Portfolio Strategies, Llc | 0.02% | 119,471 | $1,431,263 | $860,191 | -$571,072 | -39.90% | |
| Massachusetts Financial Services Co | 0.00% | 107,719 | $1,290,474 | $775,577 | -$514,897 | -39.90% | |
| Xtx Topco Ltd | 0.02% | 107,300 | $1,285,454 | $772,560 | -$512,894 | -39.90% | |
| Ameriprise Financial Inc | 0.00% | 100,055 | $1,198,659 | $720,396 | -$478,263 | -39.90% | |
| Raymond James Financial Inc | 0.00% | 92,588 | $1,109,205 | $666,634 | -$442,571 | -39.90% |
Frequently asked questions about RGNX
Who are the largest institutional holders of RGNX?
The largest institutional holders of RGNX reported in the latest SEC Form 13F filings include Blackrock, Inc., Redmile Group, Llc, State Street Corp, Jpmorgan Chase & Co, and Vanguard Capital Management Llc. InsiderSet ranks institutional holders by their latest reported RGNX position.
What is RGNX institutional ownership?
This page tracks RGNX positions reported by institutional investment managers through SEC Form 13F. REGENXBIO INC (RGNX) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own RGNX?
InsiderSet currently tracks 165 institutional managers reporting RGNX holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of RGNX shareholders.
How much RGNX stock do institutions own?
Institutional investment managers disclosed approximately $500.90M in RGNX holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was RGNX institutional ownership last updated?
The latest RGNX institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional RGNX holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its RGNX position after the reporting date.
Are institutions buying or selling RGNX?
Institutional buying and selling can be analyzed by comparing RGNX positions across consecutive 13F reporting periods. InsiderSet's RGNX Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View RGNX ownership changes.
How has RGNX institutional ownership changed over time?
InsiderSet tracks RGNX institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.