REGENXBIO INC (RGNX) Institutional Shareholders
REGENXBIO INC (RGNX) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $504.60M in RGNX holdings during the latest filing period.
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 $52.55M, representing an estimated loss of -31.43% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 60% 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
161
Total Reported Value
$504.60M
Largest Holder
Blackrock, Inc.
Largest Position
$76.64M
Insider Transactions (90d)
12
Latest Filing Quarter
Q2 2026
New Institutional Positions
69
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 | $52,554,970 | -$24,086,363 | -31.43% | |
| Redmile Group, Llc | 3.51% | 4,368,804 | $52,338,272 | $35,889,725 | -$16,448,547 | -31.43% | |
| State Street Corp | 0.00% | 2,971,173 | $35,594,653 | $24,408,186 | -$11,186,467 | -31.43% | |
| Jpmorgan Chase & Co | 0.00% | 2,214,169 | $26,193,619 | $18,189,398 | -$8,004,221 | -30.56% | |
| Vanguard Capital Management Llc | 0.00% | 2,107,557 | $25,248,533 | $17,313,581 | -$7,934,952 | -31.43% | |
| Morgan Stanley | 0.00% | 1,953,237 | $23,399,786 | $16,045,842 | -$7,353,944 | -31.43% | |
| Goldman Sachs Group Inc | 0.00% | 1,421,453 | $17,029,007 | $11,677,236 | -$5,351,771 | -31.43% | |
| Aqr Capital Management Llc | 0.01% | 1,378,358 | $16,512,730 | $11,323,211 | -$5,189,519 | -31.43% | |
| Vanguard Portfolio Management Llc | 0.00% | 1,355,554 | $16,239,537 | $11,135,876 | -$5,103,661 | -31.43% | |
| Marshall Wace, Llp | 0.01% | 1,284,950 | $15,393,701 | $10,555,864 | -$4,837,837 | -31.43% | |
| Geode Capital Management, Llc | 0.00% | 1,241,296 | $14,874,704 | $10,197,247 | -$4,677,457 | -31.45% | |
| Integral Health Asset Management, Llc | 0.39% | 800,000 | $9,584,000 | $6,572,000 | -$3,012,000 | -31.43% | |
| Nuveen, Llc | 0.00% | 740,026 | $8,865,511 | $6,079,314 | -$2,786,197 | -31.43% | |
| Dimensional Fund Advisors Lp | 0.00% | 731,586 | $8,763,715 | $6,009,979 | -$2,753,736 | -31.42% | |
| D. E. Shaw & Co., Inc. | 0.01% | 712,814 | $8,539,512 | $5,855,767 | -$2,683,745 | -31.43% | |
| Two Sigma Investments, Lp | 0.01% | 669,808 | $8,024,300 | $5,502,473 | -$2,521,827 | -31.43% | |
| Citadel Advisors Llc | 0.00% | 669,023 | $8,014,896 | $5,496,024 | -$2,518,872 | -31.43% | |
| Stifel Financial Corp | 0.01% | 560,727 | $6,717,524 | $4,606,372 | -$2,111,152 | -31.43% | |
| Bank Of America Corp | 0.00% | 518,545 | $6,212,169 | $4,259,847 | -$1,952,322 | -31.43% | |
| 22Nw, Lp | 5.64% | 492,759 | $5,903,253 | $4,048,015 | -$1,855,238 | -31.43% | |
| Millennium Management Llc | 0.00% | 480,762 | $5,759,529 | $3,949,460 | -$1,810,069 | -31.43% | |
| Pale Fire Capital Se | 0.40% | 466,209 | $5,585,184 | $3,829,907 | -$1,755,277 | -31.43% | |
| Northern Trust Corp | 0.00% | 421,839 | $5,053,632 | $3,465,407 | -$1,588,225 | -31.43% | |
| Charles Schwab Investment Management Inc | 0.00% | 396,450 | $4,749,471 | $3,256,837 | -$1,492,634 | -31.43% | |
| Lazard Asset Management Llc | 0.01% | 370,375 | $4,437,093 | $3,042,631 | -$1,394,462 | -31.43% | |
| Fmr Llc | 0.00% | 342,858 | $4,107,444 | $2,816,578 | -$1,290,866 | -31.43% | |
| Vanguard Fiduciary Trust Co | 0.00% | 337,159 | $4,039,165 | $2,769,761 | -$1,269,404 | -31.43% | |
| Quantinno Capital Management Lp | 0.00% | 300,127 | $3,595,521 | $2,465,543 | -$1,129,978 | -31.43% | |
| Gsk Plc | 0.54% | 271,456 | $3,252,043 | $2,230,011 | -$1,022,032 | -31.43% | |
| Susquehanna International Group, Llp | 0.00% | 264,912 | $3,173,646 | $2,176,252 | -$997,394 | -31.43% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 256,686 | $3,075,098 | $2,108,675 | -$966,423 | -31.43% |
| Jane Street Group, Llc | 0.00% | 253,493 | $3,036,846 | $2,082,445 | -$954,401 | -31.43% | |
| Ubs Group Ag | 0.00% | 249,947 | $2,994,365 | $2,053,315 | -$941,050 | -31.43% | |
| Jump Financial, Llc | 0.03% | 239,700 | $2,871,606 | $1,969,136 | -$902,471 | -31.43% | |
| Hudson Bay Capital Management Lp | 0.01% | 225,000 | $2,695,500 | $1,848,375 | -$847,125 | -31.43% | |
| Archpoint Investors | 0.56% | 222,278 | $2,662,890 | $1,826,014 | -$836,876 | -31.43% | |
| Corient Private Wealth Llc | 0.00% | 217,661 | $2,607,580 | $1,788,085 | -$819,495 | -31.43% | |
| Deutsche Bank Ag\ | 0.00% | 207,835 | $2,489,864 | $1,707,365 | -$782,499 | -31.43% | |
| Walleye Capital Llc | 0.01% | 203,726 | $2,440,637 | $1,673,609 | -$767,028 | -31.43% | |
| Y-Intercept (Hong Kong) Ltd | 0.04% | 181,471 | $2,174,023 | $1,490,784 | -$683,239 | -31.43% | |
| Assenagon Asset Management S.A. | 0.00% | 169,279 | $2,027,962 | $1,390,627 | -$637,335 | -31.43% | |
| Nomura Asset Management International Inc. | 0.00% | 149,000 | $1,785,000 | $1,224,035 | -$560,965 | -31.43% | |
| Ieq Capital, Llc | 0.01% | 141,469 | $1,694,798 | $1,162,168 | -$532,630 | -31.43% | |
| Bank Of New York Mellon Corp | 0.00% | 134,194 | $1,607,650 | $1,102,404 | -$505,246 | -31.43% | |
| Invesco Ltd. | 0.00% | 133,851 | $1,603,535 | $1,099,586 | -$503,949 | -31.43% | |
| Russell Investments Group, Ltd. | 0.00% | 121,359 | $1,453,879 | $996,964 | -$456,915 | -31.43% | |
| Susquehanna Portfolio Strategies, Llc | 0.02% | 119,471 | $1,431,263 | $981,454 | -$449,809 | -31.43% | |
| Massachusetts Financial Services Co | 0.00% | 107,719 | $1,290,474 | $884,912 | -$405,562 | -31.43% | |
| Xtx Topco Ltd | 0.02% | 107,300 | $1,285,454 | $881,470 | -$403,985 | -31.43% | |
| Ameriprise Financial Inc | 0.00% | 100,055 | $1,198,659 | $821,952 | -$376,707 | -31.43% |
Frequently asked questions about RGNX
Who owns the most RGNX stock?
The largest holders of RGNX are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for REGENXBIO INC (RGNX).
Is RGNX widely held by superinvestors?
Many widely followed stocks like RGNX appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly RGNX is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.