REGENXBIO Inc.

RGNX

Exchange: Nasdaq
Industry: Biological Products, (No Diagnostic Substances)
SEC CIK: 0001590877

SEC filings (opens in a new tab)

In the last 90 days, REGENXBIO Inc. insiders filed 1 open-market purchase and 0 sales; 165 institutions reported holding it in 13F filings for Q2 2026, worth $504.6M in total; no superinvestor holds it.

Q3 2025 vs. Q2 2025

How the institutions holding REGENXBIO Inc. changed between Q2 2025 and Q3 2025.

All holders in Q3 2025 All holders in Q2 2025

13F holders of RGNX: Q2 2025 compared with Q3 2025
Measure	Q2 2025	Of which not filed for Q3 2025	Q3 2025	Change
Holders	159	1	166	+8
Shares	42.0M	100	41.4M	−648.8K (−1.5%)
Value	$344.9M	$821	$399.2M	+$54.3M (+15.7%)

1 institution that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (23)

Institutions that held REGENXBIO Inc. at the end of Q3 2025 but not at the end of Q2 2025.

Institutions new to RGNX in Q3 2025
Institution	Shares	Value	% of portfolio
Invenomic Capital Management LP	426,904	$4.12M	0.22%
HRT Financial LP	172,186	$1.66M	0.01%
Susquehanna Portfolio Strategies, LLC	133,556	$1.29M	0.02%
Cubist Systematic Strategies, LLC	55,723	$537.7K	0.01%
Thrivent Financial for Lutherans	35,003	$338.0K	0.00%
SG Americas Securities, LLC	26,600	$257.0K	0.00%
Point72 Asia (Singapore) Pte. Ltd.	23,858	$230.2K	0.04%
Mercer Global Advisors Inc	19,916	$192.2K	0.00%
Brevan Howard Capital Management LP	16,392	$158.2K	0.00%
Simplex Trading, LLC	12,377	$119.0K	0.00%
Inceptionr LLC	12,154	$117.3K	0.03%
Buckingham Strategic Partners	10,221	$106.5K	0.00%
Caption Management, LLC	4,123	$39.8K	0.00%
Aquatic Capital Management LLC	3,806	$36.7K	0.00%
State of Alaska, Department of Revenue	2,597	$25.0K	0.00%
Foster Dykema Cabot & Partners, LLC	1,946	$18.8K	0.00%
Optiver Holding B.V.	446	$4.30K	0.00%
Advisory Services Network, LLC	200	$1.93K	0.00%
Quadrant Capital Group LLC	126	$1.22K	0.00%
Sunbelt Securities, Inc.	55	$531	0.00%
Farther Finance Advisors, LLC	20	$193	0.00%
Caitong International Asset Management Co., Ltd	16	$154	0.00%
Larson Financial Group LLC	8	$77	0.00%

Sold out (15)

Institutions that held REGENXBIO Inc. at the end of Q2 2025 and filed for Q3 2025 without it.

Institutions that sold out of RGNX in Q3 2025
Institution	Shares, Q2 2025	Value, Q2 2025
Balyasny Asset Management LLC	797,100	$6.54M
Exome Asset Management LLC	226,060	$1.86M
Marshall Wace, LLP	222,342	$1.83M
Y-Intercept (Hong Kong) Ltd	176,999	$1.45M
Nebula Research & Development LLC	151,293	$1.24M
Prelude Capital Management, LLC	82,321	$675.9K
Lazard Asset Management LLC	45,398	$372.0K
Virtu Financial LLC	29,543	$243.0K
Polymer Capital Management (US) LLC	23,411	$192.2K
Caliber Wealth Management, LLC	16,095	$132.1K
Headlands Technologies LLC	13,139	$107.9K
Voya Investment Management LLC	12,998	$106.7K
ProShare Advisors LLC	11,468	$94.2K
Prudential Financial Inc	10,631	$87.3K
Teachers Retirement System of the State of Kentucky	1,339	$11.0K

Not filed for Q3 2025 yet (1)

Institutions that held REGENXBIO Inc. at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding RGNX in Q2 2025 that haven't filed for Q3 2025
Institution	Shares, Q2 2025	Value, Q2 2025
Iron Horse Wealth Management, LLC	100	$821