Xenon Pharmaceuticals Inc.
DE ˙ DB ˙ CA98420N1050
45,60 € ↑1,00 (2,24%)
2026-06-04
DEL PRIS
SecurityDE:XP0 / Xenon Pharmaceuticals Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership12,151 shares
Latest Disclosed Value $ 706,581
Citigroup Inc reports 65.07% increase in ownership of XP0 / Xenon Pharmaceuticals Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 12,151 shares of Xenon Pharmaceuticals Inc. (DE:XP0) valued at $583,248 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 7,361 shares of Xenon Pharmaceuticals Inc.. This represents a change in shares of 65.07% during the quarter. The current value of the position is $554,086 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-11 2026-03-31 13F XENON PHARMACEUTICALS COM 98420N105 12,151 4,790 65.07 707 114.59 0.0002
2026-02-13 2025-12-31 13F XENON PHARMACEUTICALS COM 98420N105 7,361 -7,509 -50.50 330 -44.89 0.0001
2025-11-10 2025-09-30 13F XENON PHARMACEUTICALS COM 98420N105 14,870 -21,420 -59.02 597 -47.40 0.0003
2025-08-11 2025-06-30 13F XENON PHARMACEUTICALS COM 98420N105 36,290 29,261 416.29 1,136 382.98 0.0006
2025-05-12 2025-03-31 13F XENON PHARMACEUTICALS COM 98420N105 7,029 581 9.01 236 -6.75 0.0001
2025-02-12 2024-12-31 13F XENON PHARMACEUTICALS COM 98420N105 6,448 2,800 76.75 253 76.22 0.0001
2024-11-12 2024-09-30 13F XENON PHARMACEUTICALS COM 98420N105 3,648 -190 -4.95 144 -4.03 0.0001
2024-08-12 2024-06-30 13F XENON PHARMACEUTICALS COM 98420N105 3,838 1,425 59.06 150 44.66 0.0001
2024-05-10 2024-03-31 13F XENON PHARMACEUTICALS COM 98420N105 2,413 -591 -19.67 104 -25.36 0.0001
2024-02-09 2023-12-31 13F XENON PHARMACEUTICALS COM 98420N105 3,004 138 4.82 138 42.27 0.0001
2023-12-06 2023-09-30 13F/A-1 XENON PHARMACEUTICALS COM 98420N105 2,866 -1,288 -31.01 98 -38.99 0.0001
2023-11-09 2023-09-30 13F XENON PHARMACEUTICALS COM 98420N105 2,866 -1,288 98 0.0000
2023-08-10 2023-06-30 13F XENON PHARMACEUTICALS COM 98420N105 4,154 -3,663 -46.86 160 -43.01 0.0001
2023-05-11 2023-03-31 13F XENON PHARMACEUTICALS COM 98420N105 7,817 6,008 332.12 280 292.96 0.0002
2023-02-09 2022-12-31 13F XENON PHARMACEUTICALS COM 98420N105 1,809 92 5.36 71 14.52 0.0001
2022-11-10 2022-09-30 13F XENON PHARMACEUTICALS COM 98420N105 1,717 -201 -10.48 62 6.90 0.0000
2022-08-10 2022-06-30 13F XENON PHARMACEUTICALS COM 98420N105 1,918 -100,557 -98.13 58 -98.15 0.0000
2022-05-12 2022-03-31 13F XENON PHARMACEUTICALS COM 98420N105 102,475 100,174 4,353.50 3,133 4,251.39 0.0019
2022-02-10 2021-12-31 13F XENON PHARMACEUTICALS COM 98420N105 2,301 -328 -12.48 72 80.00 0.0000
2021-11-10 2021-09-30 13F XENON PHARMACEUTICALS COM 98420N105 2,629 -371 -12.37 40 -28.57 0.0000
2021-08-10 2021-06-30 13F XENON PHARMACEUTICALS COM 98420N105 3,000 2,039 212.17 56 229.41 0.0000
2021-05-13 2021-03-31 13F XENON PHARMACEUTICALS COM 98420N105 961 -445 -31.65 17 -22.73 0.0000
2021-02-11 2020-12-31 13F XENON PHARMACEUTICALS COM 98420N105 1,406 1,114 381.51 22 633.33 0.0000
2020-11-12 2020-09-30 13F XENON PHARMACEUTICALS COM 98420N105 292 -4,647 -94.09 3 -95.16 0.0000
2020-08-12 2020-06-30 13F XENON PHARMACEUTICALS COM 98420N105 4,939 4,939 62 0.0000
2020-05-12 2020-03-31 13F XENON PHARMACEUTICALS COM 98420N105 0 -1,352 -100.00 0 -100.00
2020-02-12 2019-12-31 13F XENON PHARMACEUTICALS COM 98420N105 1,352 674 99.41 18 200.00 0.0000
2019-11-08 2019-09-30 13F XENON PHARMACEUTICALS COM 98420N105 678 -321 -32.13 6 -40.00 0.0000
2019-08-12 2019-06-30 13F XENON PHARMACEUTICALS COM 98420N105 999 246 32.67 10 25.00 0.0000
2019-05-13 2019-03-31 13F XENON PHARMACEUTICALS COM 98420N105 753 153 25.50 8 100.00 0.0000
2019-02-12 2018-12-31 13F XENON PHARMACEUTICALS COM 98420N105 600 0 0.00 4 -50.00 0.0000
2018-11-13 2018-09-30 13F XENON PHARMACEUTICALS COM 98420N105 600 -100 -14.29 8 33.33 0.0000
2018-08-10 2018-06-30 13F XENON PHARMACEUTICALS COM 98420N105 700 0 0.00 6 100.00 0.0000
2018-05-11 2018-03-31 13F XENON PHARMACEUTICALS COM 98420N105 700 0 0.00 3 50.00 0.0000
2018-02-12 2017-12-31 13F XENON PHARMACEUTICALS COM 98420N105 700 0 0.00 2 0.00 0.0000
2017-11-13 2017-09-30 13F XENON PHARMACEUTICALS COM 98420N105 700 0 0.00 2 0.00 0.0000
2017-08-11 2017-06-30 13F XENON PHARMACEUTICALS COM 98420N105 700 0 0.00 2 -33.33 0.0000
2017-05-12 2017-03-31 13F XENON PHARMACEUTICALS COM 98420N105 700 0 0.00 3 -40.00 0.0000
2017-02-10 2016-12-31 13F XENON PHARMACEUTICALS COM 98420N105 700 0 0.00 5 -16.67 0.0000
2016-11-10 2016-09-30 13F XENON PHARMACEUTICALS COM 98420N105 700 0 0.00 6 50.00 0.0000
2016-08-12 2016-06-30 13F XENON PHARMACEUTICALS COM 98420N105 700 0 0.00 4 -20.00 0.0000
2016-05-13 2016-03-31 13F XENON PHARMACEUTICALS COM 98420N105 700 0 0.00 5 -16.67 0.0000
2016-02-12 2015-12-31 13F XENON PHARMACEUTICALS COM 98420N105 700 0 0.00 6 0.00 0.0000
2015-11-13 2015-09-30 13F XENON PHARMACEUTICALS COM 98420N105 700 649 1,272.55 6 500.00 0.0000
2015-08-13 2015-06-30 13F XENON PHARMACEUTICALS COM 98420N105 51 51 1 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.