Who owns REGENXBIO Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of RGNX from SEC Form 13F filings across 166 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 166 institutions disclosed 42.6M shares of REGENXBIO Inc. worth $506.6M — about 80.6% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
166
13F holders
$506.6M
value, 2026 filers
80.6%
of shares outstanding (42.6M sh)
28
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of RGNX's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 6.4M | $76.6M | 0.0% | 12.1% | +10.6% |
| 2 | Redmile Group, LLC | 4.4M | $52.3M | 3.5% | 8.3% | 0.0% |
| 3 | STATE STREET CORP | 3.0M | $35.6M | 0.0% | 5.6% | +8.8% |
| 4 | JPMORGAN CHASE & CONEW | 2.2M | $26.2M | 0.0% | 4.2% | new |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2.1M | $25.2M | 0.0% | 4% | +5.0% |
| 6 | MORGAN STANLEY | 2.0M | $23.4M | 0.0% | 3.7% | -5.5% |
| 7 | GOLDMAN SACHS GROUP INC | 1.4M | $17.0M | 0.0% | 2.7% | -22.7% |
| 8 | AQR CAPITAL MANAGEMENT LLC | 1.4M | $16.5M | 0.0% | 2.6% | +31.1% |
| 9 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.4M | $16.2M | 0.0% | 2.6% | +33.0% |
| 10 | MARSHALL WACE, LLPNEW | 1.3M | $15.4M | 0.0% | 2.4% | new |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 1.2M | $14.9M | 0.0% | 2.4% | +9.1% |
| 12 | Integral Health Asset Management, LLC | 800,000 | $9.6M | 0.4% | 1.5% | -46.7% |
| 13 | Nuveen, LLC | 740,026 | $8.9M | 0.0% | 1.4% | +27.1% |
| 14 | DIMENSIONAL FUND ADVISORS LP | 731,586 | $8.8M | 0.0% | 1.4% | -27.6% |
| 15 | D. E. Shaw & Co., Inc. | 712,814 | $8.5M | 0.0% | 1.3% | +149.2% |
| 16 | TWO SIGMA INVESTMENTS, LP | 669,808 | $8.0M | 0.0% | 1.3% | +20.7% |
| 17 | CITADEL ADVISORS LLCNEW | 669,023 | $8.0M | 0.0% | 1.3% | new |
| 18 | STIFEL FINANCIAL CORP | 560,727 | $6.7M | 0.0% | 1.1% | +42.8% |
| 19 | BANK OF AMERICA CORP /DE/ | 518,545 | $6.2M | 0.0% | 1% | +59.6% |
| 20 | 22NW, LP | 492,759 | $5.9M | 5.6% | 0.9% | 0.0% |
| 21 | MILLENNIUM MANAGEMENT LLC | 480,762 | $5.8M | 0.0% | 0.9% | +68.6% |
| 22 | Pale Fire Capital SE | 466,209 | $5.6M | 0.4% | 0.9% | -5.6% |
| 23 | NORTHERN TRUST CORP | 421,839 | $5.1M | 0.0% | 0.8% | +7.2% |
| 24 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 396,450 | $4.7M | 0.0% | 0.8% | +1.5% |
| 25 | Sixth Street Partners Management Company, L.P.NEW | 396,450 | $4.7M | 0.8% | 0.8% | new |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.