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Who owns Regenxbio (RGNX) stock

163 funds reported Regenxbio (RGNX) shares in their latest 13F filings, worth $528M in all. The largest holder is BlackRock ($76.6M). Last quarter 79 funds added to their stakes and 73 cut them.

Largest holders of RGNX (13F)Largest holders of RGNX (13F)BlackRock$76.6MRedmile Group, LLC$52.3MVanguard Group$48.6MState Street$35.6MVanguard Capital Management LLC$25.2MMorgan Stanley$23.4MGoldman Sachs Group$17.0MAQR Capital Management LLC$16.5MVanguard Portfolio Management LLC$16.2MMarshall Wace, LLP$15.4M

Largest holders (13F)

FundSharesValueChangeQuarter
BlackRock6,397,440$76.6Mincrease2026-06-30
Redmile Group, LLC4,368,804$52.3Munchanged2026-06-30
Vanguard Group3,374,140$48.6Mincrease2025-12-31
State Street2,971,173$35.6Mincrease2026-06-30
Vanguard Capital Management LLC2,107,557$25.2Mincrease2026-06-30
Morgan Stanley1,953,237$23.4Mdecrease2026-06-30
Goldman Sachs Group1,421,453$17.0Mdecrease2026-06-30
AQR Capital Management LLC1,378,358$16.5Mincrease2026-06-30
Vanguard Portfolio Management LLC1,355,554$16.2Mincrease2026-06-30
Marshall Wace, LLP1,284,950$15.4Mnew2026-06-30
Geode Capital Management, LLC1,241,296$14.9Mincrease2026-06-30
Integral Health Asset Management, LLC800,000$9.6Mdecrease2026-06-30
Nuveen, LLC740,026$8.9Mincrease2026-06-30
Dimensional Fund Advisors LP731,586$8.8Mdecrease2026-06-30
D. E. Shaw712,814$8.5Mincrease2026-06-30

Regenxbio's latest quarter

Regenxbio, Q3 2026: revenue $9.2M (-69% year over year), operating margin -387.8%, net loss $40.7M, operating cash flow $38.6M. The chart follows the revenue to costs, profit and cash.

Questions

Who owns the most RGNX stock?

By the latest 13F filings: BlackRock ($76.6M); Redmile Group, LLC ($52.3M); Vanguard Group ($48.6M); State Street ($35.6M); Vanguard Capital Management LLC ($25.2M).

What is the short interest in RGNX?

10,043,670 shares were sold short at the 2026-10-15 settlement, 4.52% of the float.

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Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.