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XENE · Xenon Pharmaceuticals Inc.

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$59.99 -1.94 (-3.13%) At close · Aug 28
Market Cap
$5.81B
Shares
96.84M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 317
Total Value: $6,165,198,025
Total Shares: 102,140,500
Showing 1–100 of 322 holdings by value · page 1 of 4

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 317 13F filers · Δ vs Mar 31, 2026
Top Holder
9.4%
Sep 2023 → Jun 2026 · range 7.7% – 10.7%
−0.9 pts
Top 5
31.3%
Sep 2023 → Jun 2026 · range 30.3% – 33.5%
+1.0 pts
Top 10
45.5%
Sep 2023 → Jun 2026 · range 45.5% – 50.5%
−0.2 pts
HHI
303
Sep 2023 → Jun 2026 · range 303 – 358
Broadly held−3

Quarterly Activity

vs Mar 31, 2026
New
49
Increased
125
Decreased
90
Sold Out
27
Unchanged
53
Holder count: +22
Institutional value: +1.7%
Shares held: -2.0%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 322
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1582313 CUSIP 98420N105 13F (30d) 279 filings 266 filers Visit website Investor relations