Security key
G52694109
Kiniksa Pharmaceuticals International, plc - Common Stock (KNSA)
CUSIP: G52694109
Q1 2025 13F Holders as of 31 Mar 2025
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 39,936,950
- Total 13F value
- $887,052,494
- Share change
- +930,774
- Put/Call ratio
- 93%
- SEC-reported price per share
- $22.21
- Number of holders
- 173
- Value change
- +$25,344,007
- Number of buys
- 91
- Number of sells
- 74
- Shares outstanding
- 46,087,073
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 2025
Institutions
173
Top holders
10
KNSA full security history
Ownership snapshot
Full 13F holder table
Kiniksa Pharmaceuticals International, plc SEC filings
Kiniksa Pharmaceuticals International, plc company facts
Broader feeds
Ownership snapshot
Top reported holders of KNSA - Kiniksa Pharmaceuticals International, plc - 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
TANG CAPITAL MANAGEMENT LLC
Disclosed value leader
BlackRock, Inc.
Comparable rows
15/15
Latest evidence
28 Mar 2025
13D/G
13F
Lead comparable stake: 5.2%
13D/G row: TANG CAPITAL MANAGEMENT LLC
Showing 1-6 of 15 holder rows.
Quick read
TANG CAPITAL MANAGEMENT LLC leads the comparable SEC ownership view at 5.2%.
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 TANG CAPITAL MANAGEMENT LLC's linked filing trail.
Comparable ownership
Top 5
TANG CAPITAL MANAGEMENT LLC
5.2%
BlackRock, Inc.
7.8%
BRAIDWELL LP
7.5%
VANGUARD GROUP INC
7%
BAKER BROS. ADVISORS LP
6.1%
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 |
|---|---|---|---|---|---|
| TANG CAPITAL MANAGEMENT LLC |
13D/G
13F
Company
|
5.2%
|
$46,556,874
2,178,609 shares
|
$0 | 28 Mar 2025 |
| BlackRock, Inc. |
13F
Company
|
7.8%
|
$70,651,451
3,571,863 shares
|
— | 31 Dec 2024 |
| BRAIDWELL LP |
13F
Company
|
7.5%
|
$68,289,402
3,452,447 shares
|
— | 31 Dec 2024 |
| VANGUARD GROUP INC |
13F
Company
|
7%
|
$63,444,291
3,207,497 shares
|
— | 31 Dec 2024 |
| BAKER BROS. ADVISORS LP |
13F
Company
|
6.1%
|
$55,746,429
2,818,323 shares
|
— | 31 Dec 2024 |
| Rubric Capital Management LP |
13F
Company
|
5.7%
|
$51,805,857
2,619,103 shares
|
— | 31 Dec 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 Q1 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
173
Shares
39,936,950
Rows available
173
| 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 2025 vs Q1 2025 Across Filers
Q1 2025 holders
173
Q1 2025 holders
173
Holder diff
0
| Investor | Q1 2025 Shares | Q1 2025 Shares | Share Diff | Share Chg % | Q1 2025 value | Q1 2025 value | Value change | Value Chg % |
|---|