Latest Period
Q1 2026
Security Snapshot
REGENXBIO Inc. - Common Stock, par value $0.0001 per share (RGNX) Institutional Ownership
CUSIP: 75901B107
13F Institutional Holders and Ownership History from Q3 2015 to Q2 2026
Institutions Reporting
176
Shares (Excl. Options)
42,526,490
Price
$8.38
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- Security type / class
- Equity / Common Stock, par value $0.0001 per share
- Symbol
- RGNX on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 42,526,490
- Total 13F value
- $354,198,652
- Portfolio coverage rank
- 0%
- Share change
- +1,443,755
- Value change
- +$5,350,585
- Number of holders
- 176
- Shares outstanding
- 51,803,682
- SEC-reported price per share
- $11.98
- Insider filing price
- $11.98
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- RGNX - REGENXBIO Inc. - Common Stock, par value $0.0001 per share is tracked under CUSIP 75901B107.
- 176 institutions reported positions in Q1 2026.
- 5 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 176 to 5 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $354,198,652 to $4,266,593.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 176 institutions filings for Q1 2026.
Security key
75901B107
Latest holder period
Q1 2026
13F holders
176
13D/G owners
5
CIK / CUSIP context first
Open Q1 2026 holders
RGNX full holder history
REGENXBIO Inc. SEC filings
REGENXBIO Inc. company facts
REGENXBIO Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 75901B107:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
5
Security
RGNX
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Redmile Group, LLC | 9.9% | $43,942,300 | 5,062,477 | Redmile Group, LLC | 30 Jun 2025 | |||
| BlackRock, Inc. | 7.3% | -34% | $34,616,925 | -$16,819,095 | 3,678,738 | -33% | BlackRock, Inc. | 31 Mar 2025 |
| STATE STREET CORP | 5.3% | +22% | $22,890,414 | +$4,572,983 | 2,731,553 | +25% | STATE STREET CORPORATION | 31 Mar 2026 |
| JPMORGAN CHASE & CO | 4.4% | -43% | $21,631,145 | -$13,471,055 | 2,279,362 | -38% | JPMORGAN CHASE & CO | 29 May 2026 |
| BlackRock Portfolio Management LLC | 4.1% | -35% | $30,032,914 | -$15,091,042 | 2,085,619 | -33% | BlackRock Portfolio Management LLC | 31 Dec 2025 |
As of 31 Mar 2026, 176 institutional investors reported holding 42,526,490 shares of REGENXBIO Inc. - Common Stock, par value $0.0001 per share (RGNX). This represents 82% of the company’s total 51,803,682 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
67%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 11% | 5,782,808 | +0.45% | 0% | $48,459,930 |
| Redmile Group, LLC | 8.4% | 4,368,804 | 0% | 2.4% | $36,610,578 |
| JPMORGAN CHASE & CO | 6.7% | 3,483,800 | -2% | 0% | $27,069,126 |
| STATE STREET CORP | 5.3% | 2,731,485 | +19% | 0% | $22,889,844 |
| MORGAN STANLEY | 4% | 2,066,156 | +2.5% | 0% | $17,314,387 |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.9% | 2,007,146 | 0% | 0% | $16,819,883 |
| GOLDMAN SACHS GROUP INC | 3.6% | 1,839,463 | +3% | 0% | $15,414,700 |
| Integral Health Asset Management, LLC | 2.9% | 1,500,000 | +25% | 0.67% | $12,570,000 |
| Qube Research & Technologies Ltd | 2.5% | 1,310,493 | +196% | 0.02% | $10,981,931 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.2% | 1,137,498 | -0.67% | 0% | $9,534,835 |
| AQR CAPITAL MANAGEMENT LLC | 2% | 1,051,712 | -23% | 0% | $8,813,347 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2% | 1,018,901 | 0% | 0% | $8,538,390 |
| DIMENSIONAL FUND ADVISORS LP | 2% | 1,010,381 | +12% | 0% | $8,463,684 |
| Assenagon Asset Management S.A. | 1.9% | 980,611 | -15% | 0.01% | $8,217,520 |
| Nuveen, LLC | 1.1% | 582,016 | -12% | 0% | $4,877,294 |
| TWO SIGMA INVESTMENTS, LP | 1.1% | 554,892 | +327% | 0% | $4,649,995 |
| Pale Fire Capital SE | 0.95% | 493,726 | -1.2% | 0.36% | $4,137,424 |
| 22NW, LP | 0.95% | 492,759 | -47% | 3.3% | $4,129,320 |
| NORTHERN TRUST CORP | 0.76% | 393,640 | +5.3% | 0% | $3,298,703 |
| STIFEL FINANCIAL CORP | 0.76% | 392,769 | +17% | 0% | $3,291,423 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.75% | 390,601 | -0.22% | 0% | $3,273,236 |
| HRT FINANCIAL LP | 0.68% | 351,489 | +17% | 0.01% | $2,945,000 |
| BANK OF AMERICA CORP /DE/ | 0.63% | 324,860 | +8.1% | 0% | $2,722,327 |
| VANGUARD FIDUCIARY TRUST CO | 0.6% | 312,064 | 0% | 0% | $2,615,096 |
| FMR LLC | 0.6% | 311,268 | +17% | 0% | $2,608,423 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
44
Latest
Q1 2026
Rows shown
1-25 of 44
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 356,143 | $4,266,593 | -$11,569,230 | $11.98 | 5 |
| 2026 Q1 | 42,526,490 | $354,198,652 | +$5,350,585 | $8.38 | 176 |
| 2025 Q4 | 41,071,731 | $591,342,655 | -$5,662,069 | $14.40 | 173 |
| 2025 Q3 | 41,358,721 | $399,176,079 | -$3,663,002 | $9.65 | 165 |
| 2025 Q2 | 42,035,725 | $345,140,942 | +$5,513,913 | $8.21 | 159 |
| 2025 Q1 | 41,667,225 | $297,962,085 | -$1,501,158 | $7.15 | 163 |
| 2024 Q4 | 42,074,510 | $325,173,475 | -$15,537,348 | $7.73 | 175 |
| 2024 Q3 | 43,665,569 | $458,056,433 | -$8,522,130 | $10.49 | 184 |
| 2024 Q2 | 43,782,930 | $512,285,979 | +$5,420,902 | $11.70 | 180 |
| 2024 Q1 | 42,534,646 | $895,831,731 | +$95,824,018 | $21.07 | 185 |
| 2023 Q4 | 38,123,027 | $684,323,807 | +$18,843,309 | $17.95 | 167 |
| 2023 Q3 | 37,072,487 | $610,280,035 | -$2,249,035 | $16.46 | 157 |
| 2023 Q2 | 37,122,782 | $742,048,193 | +$3,963,188 | $19.99 | 165 |
| 2023 Q1 | 37,009,156 | $699,776,275 | +$18,824,498 | $18.91 | 170 |
| 2022 Q4 | 35,702,552 | $809,736,875 | +$5,376,487 | $22.68 | 180 |
| 2022 Q3 | 35,093,974 | $927,284,018 | -$30,479,732 | $26.43 | 173 |
| 2022 Q2 | 36,159,183 | $893,093,296 | +$28,890,952 | $24.70 | 157 |
| 2022 Q1 | 34,902,249 | $1,157,712,999 | -$21,017,474 | $33.19 | 181 |
| 2021 Q4 | 35,507,306 | $1,160,896,124 | +$58,351,051 | $32.70 | 168 |
| 2021 Q3 | 33,398,271 | $1,400,353,918 | -$3,046,167 | $41.92 | 177 |
| 2021 Q2 | 33,460,640 | $1,299,751,931 | +$26,836,789 | $38.85 | 168 |
| 2021 Q1 | 32,853,108 | $1,120,584,466 | +$187,839,315 | $34.11 | 178 |
| 2020 Q4 | 27,329,284 | $1,239,697,831 | -$41,654,835 | $45.36 | 182 |
| 2020 Q3 | 28,512,126 | $785,403,793 | -$29,743,448 | $27.52 | 162 |
| 2020 Q2 | 29,376,827 | $1,082,072,585 | +$20,048,711 | $36.83 | 174 |