Security key
98420N105
Xenon Pharmaceuticals Inc. - Common Shares (XENE)
CUSIP: 98420N105
Q4 2025 13F Holders as of 31 Dec 2025
- Security type / class
- Equity / Common Shares
- Total 13F shares
- 84,413,479
- Total 13F value
- $3,783,396,815
- Share change
- -594,096
- Put/Call ratio
- 192%
- SEC-reported price per share
- $44.82
- Number of holders
- 245
- Value change
- -$19,907,308
- Number of buys
- 125
- Number of sells
- 95
- Shares outstanding
- 92,799,600
Holder snapshot
7 signals
Show 1 more signal
Security identity
1 source field
Report period
Q4 2025
Institutions
245
Top holders
10
XENE full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2026
Previous quarter: Q3 2025
Xenon Pharmaceuticals Inc. SEC filings
Xenon Pharmaceuticals Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 98420N105
Recent filing periods:
Ownership snapshot
Top reported holders of XENE - Xenon Pharmaceuticals Inc. - Common Shares (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
FMR LLC
Disclosed value leader
FMR LLC
Comparable rows
15/15
Latest evidence
31 Dec 2025
13F
13D/G
Lead comparable stake: 12%
13D/G row: FMR LLC
Showing 1-6 of 15 holder rows.
Quick read
FMR LLC leads the comparable SEC ownership view at 12%.
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.
Comparable ownership
Top 5
FMR LLC
12%
WELLINGTON MANAGEMENT GROUP LLP
6.2%
BlackRock, Inc.
6.2%
DRIEHAUS CAPITAL MANAGEMENT LLC
4.9%
Avoro Capital Advisors LLC
5.8%
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 |
|---|---|---|---|---|---|
| FMR LLC |
13F
13D/G
Company
|
12%
from 13D/G
|
$358,094,116
8,918,907 shares
|
— | 30 Sep 2025 |
| WELLINGTON MANAGEMENT GROUP LLP |
13D/G
13F
Company
|
6.2%
|
$213,557,395
4,764,779 shares
|
+$116,084,607 | 31 Dec 2025 |
| BlackRock, Inc. |
13F
13D/G
Company
|
6.2%
from 13D/G
|
$191,553,697
4,770,951 shares
|
— | 30 Sep 2025 |
| DRIEHAUS CAPITAL MANAGEMENT LLC |
13D/G
13F
Company
|
4.9%
|
$255,350,473
4,491,653 shares
|
$0 | 31 Dec 2025 |
| Avoro Capital Advisors LLC |
13F
Company
|
5.8%
|
$216,810,000
5,400,000 shares
|
— | 30 Sep 2025 |
| JANUS HENDERSON GROUP PLC |
13F
Company
|
4.2%
|
$158,311,659
3,943,885 shares
|
— | 30 Sep 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 Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
245
Shares
84,413,479
Rows available
245
| 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 Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
218
Q4 2025 holders
245
Holder diff
27
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend