Security key
901384107
2seventy bio, Inc. - Common Stock, par value $0.0001 per share (TSVT)
CUSIP: 901384107
Q3 2024 13F Holders as of 30 Sep 2024
- Security type / class
- Equity / Common Stock, par value $0.0001 per share
- Total 13F shares
- 45,014,292
- Total 13F value
- $212,478,861
- Share change
- -2,618,575
- Put/Call ratio
- 16%
- SEC-reported price per share
- $4.72
- Number of holders
- 112
- Value change
- -$12,126,215
- Number of buys
- 36
- Number of sells
- 48
- Shares outstanding
- 52,406,487
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 2024
Institutions
112
Top holders
10
TSVT full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2025
2seventy bio, Inc. SEC filings
2seventy bio, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 901384107
Recent filing periods:
Ownership snapshot
Top reported holders of TSVT - 2seventy bio, Inc. - Common Stock, par value $0.0001 per share (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
Kynam Capital Management, LP
Disclosed value leader
Kynam Capital Management, LP
Comparable rows
15/15
Latest evidence
30 Jun 2024
3/4/5
13F
Lead comparable stake: 11%
Showing 1-6 of 15 holder rows.
Quick read
Kynam Capital Management, LP leads the comparable SEC ownership view at 11%.
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 Kynam Capital Management, LP's linked filing trail.
Comparable ownership
Top 5
Kynam Capital Management, LP
11%
GOLDMAN SACHS GROUP INC
7.9%
BlackRock Finance, Inc.
7%
VANGUARD GROUP INC
6.9%
MORGAN STANLEY
6.2%
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 |
|---|---|---|---|---|---|
| Kynam Capital Management, LP |
3/4/5
13F
10%+ Owner · Company
|
11%
from 13F
|
$61,293,964
10,284,222 shares
|
— | 10 Aug 2023 |
| GOLDMAN SACHS GROUP INC |
13F
Company
|
7.9%
|
$15,930,703
4,137,845 shares
|
— | 30 Jun 2024 |
| BlackRock Finance, Inc. |
13F
Company
|
7%
|
$14,094,938
3,661,023 shares
|
— | 30 Jun 2024 |
| VANGUARD GROUP INC |
13F
Company
|
6.9%
|
$13,972,116
3,629,121 shares
|
— | 30 Jun 2024 |
| MORGAN STANLEY |
13F
Company
|
6.2%
|
$12,592,942
3,270,894 shares
|
— | 30 Jun 2024 |
| Madison Avenue Partners, LP |
13F
Company
|
4.9%
|
$9,868,405
2,563,222 shares
|
— | 30 Jun 2024 |
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 2024
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
112
Shares
45,014,292
Rows available
112
| 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 2024 vs Q3 2025 Across Filers
Q3 2025 holders
0
Q3 2024 holders
112
Holder diff
112
| Investor | Q3 2025 Shares | Q3 2024 Shares | Share Diff | Share Chg % | Q3 2025 value | Q3 2024 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend