Security key
142038108
Caribou Biosciences, Inc. - Common Stock (CRBU)
CUSIP: 142038108
Q3 2023 13F Holders as of 30 Sep 2023
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 70,779,287
- Total 13F value
- $338,477,161
- Share change
- +27,507,847
- Put/Call ratio
- 80%
- SEC-reported price per share
- $4.78
- Number of holders
- 126
- Value change
- +$132,380,976
- Number of buys
- 83
- Number of sells
- 38
- Shares outstanding
- 99,672,278
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2023
Institutions
126
Top holders
10
CRBU full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2026
Caribou Biosciences, Inc. SEC filings
Caribou Biosciences, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 142038108
Recent filing periods:
Ownership snapshot
Top reported holders of CRBU - Caribou Biosciences, Inc. - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
PFM Health Sciences, LP
Disclosed value leader
PFM Health Sciences, LP
Comparable rows
15/15
Latest evidence
30 Jun 2023
13F
3/4/5
Lead comparable stake: 5.6%
Showing 1-6 of 15 holder rows.
Quick read
PFM Health Sciences, LP leads the comparable SEC ownership view at 5.6%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens PFM Health Sciences, LP's linked filing trail.
Comparable ownership
Top 5
PFM Health Sciences, LP
5.6%
BlackRock Finance, Inc.
4.8%
Avidity Partners Management LP
2.8%
BANK OF AMERICA CORP /DE/
2.8%
Rokos Capital Management LLP
2.8%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| PFM Health Sciences, LP |
13F
Company
|
5.6%
|
$23,676,193
5,570,869 shares
|
— | 30 Jun 2023 |
| BlackRock Finance, Inc. |
13F
Company
|
4.8%
|
$20,249,589
4,764,609 shares
|
— | 30 Jun 2023 |
| Avidity Partners Management LP |
13F
Company
|
2.8%
|
$11,724,050
2,758,600 shares
|
— | 30 Jun 2023 |
| BANK OF AMERICA CORP /DE/ |
13F
Company
|
2.8%
|
$11,693,832
2,751,490 shares
|
— | 30 Jun 2023 |
| Rokos Capital Management LLP |
13F
Company
|
2.8%
|
$11,202,789
2,748,139 shares
|
— | 30 Jun 2023 |
| VANGUARD GROUP INC |
13F
Company
|
2.6%
|
$10,880,982
2,560,231 shares
|
— | 30 Jun 2023 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2023
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
126
Shares
70,779,287
Rows available
126
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2023 vs Q2 2023 Across Filers
Q2 2023 holders
117
Q3 2023 holders
126
Holder diff
9
| Investor | Q2 2023 Shares | Q3 2023 Shares | Share Diff | Share Chg % | Q2 2023 value | Q3 2023 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend