AI summary pending
View Full Filing (SEC EDGAR)Regenxbio Inc
$7.77-3.7%
+$41.8M
Net Activity
+0.00% total shares
Institutions Holding
170
Popularity Rank
#3403
Avg Weight
0.08%
Total Value
$518.3M
Market Cap
$400.7M
170 institutions currently hold RGNX, with 97 net buyers and 86 net sellers this quarter.
Institutional Moves (Q2 2026)
Neutral
Based on recent trading activity
Net Selling Institutions
86
Net Buying Institutions
97
Top 5 by Value
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Across its top 20 institutional holders, RGNX's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 7/100, avg. turnover score 36/100).
RGNX ranks #3403 out of 37696 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
RGNX is a top-conviction position for 22nw, LP — at 5.6% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.
The largest dollar stake in RGNX belongs to BlackRock, Inc., but the position matters far more to 22nw, LP, who has 5.6% of their own portfolio riding on it — a reminder that the biggest holder by size and the holder with the biggest bet aren't always the same fund.
IFP Advisors, Inc has added to its RGNX position for two straight quarters, increasing it by $4.0K to reach $6.1K today.
Assenagon Asset Management S.A. has trimmed its RGNX position for two straight quarters, cutting it by $7.9M while still holding $343.3K.
RGNX is down 3.7% today, but institutions show net buying of $41.8M this quarter — a divergence between today's price move and the underlying institutional flow.
RGNX reported a net loss of $196.4M over the trailing twelve months.
+$112.9M
Total Buy Value
$89.2M
Total Sell Value
97
Net Buyers
86
Net Sellers
RGNX
Q2 2026
Top 5 Institutional Movers
RGNX does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.
13F data as of 2026-09-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
No Form 144 planned sale filings in the last 90 days
No Schedule 13D/13G filings for this ticker
5
Filings (14d)
AI summary pending
View Full Filing (SEC EDGAR)AI summary pending
View Full Filing (SEC EDGAR)AI summary pending
View Full Filing (SEC EDGAR)On August 24, 2026, REGENXBIO (RGNX) announced that the FDA has placed a clinical hold on the Investigational New Drug application for its Phase I/II/III trial of RGX-121, its gene therapy candidate for MPS II (Hunter Syndrome), putting that trial on pause. The company also said it does not expect to resubmit its Biologics License Application (BLA) for RGX-121 in the near term. The news was disclosed under Item 7.01 with the press release furnished as Exhibit 99.1 — notably, the excerpt does not spell out why the FDA issued the hold.
View Full Filing (SEC EDGAR)AI summary pending
View Full Filing (SEC EDGAR)75901B107
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,278
Total reported value
$2.2T
3254 13F institutions increased their position this quarter
Institutions Holding
6,025
Total reported value
$3.6T
3054 13F institutions increased their position this quarter
Institutions Holding
6,188
Total reported value
$1.8T
2995 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
5,106
Total reported value
$1.1T
Held by 5106 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,949
Total reported value
$485.2B
Held by 4949 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,868
Total reported value
$1.5T
Held by 4868 institutions — one of the most-tracked stocks on AlphaSMO
Access RGNX's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/RGNXCLI
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