Security key
492327101
Keros Therapeutics, Inc. - Common Stock (KROS)
CUSIP: 492327101
Q1 2026 13F Holders as of 31 Mar 2026
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 18,564,379
- Total 13F value
- $204,931,904
- Share change
- -1,605,548
- Put/Call ratio
- 232%
- SEC-reported price per share
- $11.04
- Number of holders
- 148
- Value change
- -$29,235,035
- Number of buys
- 68
- Number of sells
- 93
- Shares outstanding
- 19,896,940
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
Q1 2026
Institutions
148
Top holders
10
KROS full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2026
Keros Therapeutics, Inc. SEC filings
Keros Therapeutics, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 492327101
Recent filing periods:
Ownership snapshot
Top reported holders of KROS - Keros Therapeutics, 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
Nantahala Capital Managem...
Disclosed value leader
BlackRock, Inc.
Comparable rows
15/15
Latest evidence
31 Mar 2026
13D/G
13F
3/4/5
Lead comparable stake: 6.9%
13D/G row: Nantahala Capital Management, LLC
Showing 1-6 of 15 holder rows.
Quick read
Nantahala Capital Management, LLC leads the comparable SEC ownership view at 6.9%.
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 Nantahala Capital Management, LLC's linked filing trail.
Comparable ownership
Top 5
Nantahala Capital Management, LLC
6.9%
D. E. SHAW & CO, L.P.
3.9%
Madison Avenue Partners, LP
2.7%
ALKEON CAPITAL MANAGEMENT LLC
2.7%
FMR LLC
1.7%
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 |
|---|---|---|---|---|---|
| Nantahala Capital Management, LLC |
13D/G
13F
Company
|
6.9%
|
$17,073,258
1,360,419 shares
|
$0 | 31 Mar 2026 |
| D. E. SHAW & CO, L.P. |
13D/G
|
3.9%
|
$14,745,042
756,156 shares
|
-$15,400,944 | 31 Dec 2025 |
| Madison Avenue Partners, LP |
13F
13D/G
Company · Madison Avenue International LP
|
2.7%
from 13D/G
|
$16,770,675
823,707 shares
|
— | 31 Dec 2025 |
| ALKEON CAPITAL MANAGEMENT LLC |
13D/G
|
2.7%
|
$15,645,210
1,101,000 shares
|
$0 | 31 Dec 2024 |
| FMR LLC |
13D/G
13F
Company
|
1.7%
|
$10,010,547
704,472 shares
|
$0 | 31 Jan 2025 |
| JPMORGAN CHASE & CO |
13D/G
|
0.2%
|
$1,617,141
113,803 shares
|
-$35,146,204 | 30 Apr 2025 |
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 Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
148
Shares
18,564,379
Rows available
148
| 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 Q1 2026 vs Q1 2026 Across Filers
Q1 2026 holders
148
Q1 2026 holders
148
Holder diff
0
| Investor | Q1 2026 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend