AI summary pending
View Full Filing (SEC EDGAR)Caribou Biosciences Inc
$0.47+1.1%
+$22.7M
Net Activity
+29.27% total shares
Institutions Holding
138
Popularity Rank
#3879
Avg Weight
0.05%
Total Value
$86.7M
Market Cap
$43.9M
138 institutions currently hold CRBU, with 73 net buyers and 49 net sellers this quarter.
Institutional Moves (Q2 2026)
Majority Increased
Based on recent trading activity
Net Selling Institutions
49
Net Buying Institutions
73
Top 5 by Value
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Across its top 20 institutional holders, CRBU's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 8/100, avg. turnover score 40/100).
CRBU ranks #3879 out of 37696 tracked stocks by institutional interest, inside the more closely watched half of our coverage.
CRBU is a disclosed holding of Jim Simons (Renaissance Technologies), one of the tracked superinvestors on AlphaSMO — it makes up 0.0% of that fund's own 13F portfolio.
138 institutions disclose a position in CRBU, but none treat it as a major bet — even Pfizer Inc, its most concentrated holder, allocates just 4.6% of its own portfolio to it.
Thrive Wealth Management, LLC has trimmed its CRBU position for two straight quarters, cutting it by $20.2K while still holding $40.6K.
CRBU is up 1.1% today, and institutions have been net buyers of $22.7M this quarter — today's price move and the underlying institutional flow are pointing the same direction.
CRBU reported a net loss of $103.4M over the trailing twelve months.
+$33.4M
Total Buy Value
$11.9M
Total Sell Value
73
Net Buyers
49
Net Sellers
CRBU
Q2 2026
Top 5 Institutional Movers
+$9.7M
+$4.6M
-$2.3M
+$2.2M
+$2.1M
CRBU 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
2
Filings (14d)
AI summary pending
View Full Filing (SEC EDGAR)AI summary pending
View Full Filing (SEC EDGAR)142038108
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
4,662
Total reported value
$986.0B
Held by 4662 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,610
Total reported value
$529.1B
Held by 4610 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,442
Total reported value
$354.7B
Held by 4442 institutions — one of the most-tracked stocks on AlphaSMO
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