Regenxbio RGNX Institutional Ownership

NASDAQ RGNX

$7.45 -0.08 (-1.06%)

As of: Oct 1, 2026 · 3:42 PM EDT

Institutions by Trading Activity

166 Institutions

Increased 88 53.0%

Unchanged 26 15.7%

Reduced 52 31.3%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

80.62%

▼-1.67 pp QoQ

Shares Held by Institutions

42.58Mn

of 52.82Mn outstanding

▲+8.97% QoQ

Shares Outstanding

52.82Mn

10.24Mn held outside 13F filers

Institutional Investors

166

filed 13F for Jun 2026

▼-10 vs prior quarter

Net Shares Added (QoQ)

+3.50Mn

accumulated since last quarter

Value of Holdings

$320.66Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

REGENXBIO Inc. (NASDAQ:RGNX) showed up in the 13F filings of 166 institutional investors as of June 2026.

Their combined ownership stood at 80.6% of outstanding shares in June 2026, down from 82.3% in March 2026.
They increased total shares held in Regenxbio by 8.97% from the prior quarter, while the number of investors in RGNX increased 6.41% year over year.
Of these 166 holders, 88 added to their stakes in Regenxbio, 52 trimmed positions, and 26 made no changes.
The aggregate institutional position in Regenxbio amounted to 42.58Mn shares as of June 2026, up by 3.5Mn shares quarter on quarter, and up 1.89Mn shares year over year.
BlackRock, Inc. leads ownership in RGNX with 6.4Mn shares as of June 30, 2026, equal to 12.11% of outstanding shares.
Top purchasers of RGNX stock for the quarter ending June 2026 included MARSHALL WACE, LLP (1.28Mn), CITADEL ADVISORS LLC (669.02K), BlackRock, Inc. (614.63K), D. E. Shaw & Co., Inc. (426.81K), Sixth Street Partners Management Company, L.P. (396.45K).
Leading sellers of Regenxbio shares for the quarter ending June 2026 were Jpmorgan Chase & Co (1.27Mn), Assenagon Asset Management S.A. (811.33K), Integral Health Asset Management, LLC (700.0K), Goldman Sachs Group Inc (418.01K), DIMENSIONAL FUND ADVISORS LP (278.8K).
According to Business Quant data, leading holders of RGNX for June 2026 are BlackRock, Inc. (6.4Mn), Redmile Group, LLC (4.37Mn), State Street Corp (2.97Mn), Jpmorgan Chase & Co (2.21Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.11Mn), Morgan Stanley (1.95Mn), Goldman Sachs Group Inc (1.42Mn), AQR CAPITAL MANAGEMENT LLC (1.38Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (1.36Mn), MARSHALL WACE, LLP (1.28Mn).

Form 13F Holdings

166 Institutional Holders

Report period 30 Jun, 2026

Total shares held 42.58Mn

Of outstanding 80.62%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	6,397,440	12.11%	▲614,632	+10.63%	$76.64Mn
2	Redmile Group, LLC	0001425738	4,368,804	8.27%	0	0.00%	$52.34Mn
3	State Street Corp	0000093751	2,971,173	5.63%	▲239,688	+8.78%	$35.59Mn
4	Jpmorgan Chase & Co	0000019617	2,214,169	4.19%	▼1,269,631	-36.44%	$26.19Mn
5	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	2,107,557	3.99%	▲100,411	+5.00%	$25.25Mn
6	Morgan Stanley	0000895421	1,953,237	3.70%	▼112,920	-5.47%	$23.40Mn
7	Goldman Sachs Group Inc	0000886982	1,421,453	2.69%	▼418,010	-22.72%	$17.03Mn
8	AQR CAPITAL MANAGEMENT LLC	0001167557	1,378,358	2.61%	▲326,646	+31.06%	$16.51Mn
9	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	1,355,554	2.57%	▲336,653	+33.04%	$16.24Mn
10	MARSHALL WACE, LLP	0001318757	1,284,950	2.43%	▲1,284,950	0.00%	$15.39Mn
11	GEODE CAPITAL MANAGEMENT, LLC	0001214717	1,241,296	2.35%	▲103,798	+9.13%	$14.87Mn
12	Integral Health Asset Management, LLC	0001773206	800,000	1.51%	▼700,000	-46.67%	$9.58Mn
13	Nuveen, LLC	0001871926	740,026	1.40%	▲158,010	+27.15%	$8.87Mn
14	DIMENSIONAL FUND ADVISORS LP	0000354204	731,586	1.39%	▼278,795	-27.59%	$8.76Mn
15	D. E. Shaw & Co., Inc.	0001009207	712,814	1.35%	▲426,813	+149.23%	$8.54Mn
16	TWO SIGMA INVESTMENTS, LP	0001179392	669,808	1.27%	▲114,916	+20.71%	$8.02Mn
17	CITADEL ADVISORS LLC	0001423053	669,023	1.27%	▲669,023	0.00%	$8.01Mn
18	Stifel Financial Corp	0000720672	560,727	1.06%	▲167,958	+42.76%	$6.72Mn
19	Bank Of America Corp /De/	0000070858	518,545	0.98%	▲193,685	+59.62%	$6.21Mn
20	22NW, LP	0001694297	492,759	0.93%	0	0.00%	$5.90Mn

Showing 1 to 20 of 166 holders