Xenon Pharmaceuticals Inc.

XENENASDAQ

$36.57-1.00 (-2.66% today)

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

Xenon Pharmaceuticals Inc. price and activity chart data

Showing the 1Y range: Oct 6, 2025 to Oct 6, 2026. Price (-7.5%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
FMR LLC	9.97%	$582M	0.03%	Not reported
BlackRock, Inc.	7.77%	$454M	0.01%	Not reported
Avoro Capital Advisors LLC	5.97%	$349M	3.13%	Not reported
Polar Capital Holdings Plc	4.72%	$276M	0.65%	Add 3.75%
Driehaus Capital Management LLC	4.57%	$267M	1.55%	Reduce 1.63%
Jupiter Topco LLC	4.33%	$253M	0.10%	Not reported
JPMorgan Chase & Co	2.71%	$157M	0.01%	Not reported
Capital International Investors	2.44%	$143M	0.03%	Reduce 11.71%
T. Rowe Price Investment Management, Inc.	2.24%	$131M	0.09%	Add 127.80%
State Street Corp	2.04%	$119M	0.00%	Not reported
Two Sigma Investments, LP	1.70%	$99.2M	0.07%	Not reported
Deerfield Management Company, L.P.	1.67%	$97.5M	1.02%	Not reported
Affinity Asset Advisors, LLC	1.65%	$96.3M	4.35%	Reduce 4.78%
Alliancebernstein L.P.	1.61%	$90.8M	0.03%	Not reported
Westfield Capital Management Co LP	1.56%	$91M	0.30%	Add 7.55%
Wellington Management Group LLP	1.47%	$86M	0.01%	Reduce 70.48%
Citadel Advisors LLC	1.45%	$84.6M	0.01%	Not reported
Geode Capital Management, LLC	1.42%	$82.7M	0.00%	Not reported
Siren, L.L.C.	1.36%	$79.6M	1.61%	Not reported
BNP PARIBAS ASSET MANAGEMENT Holding S.A.	1.33%	$77.9M	0.08%	Reduce 3.82%
Pictet Asset Management Holding SA	1.23%	$71.6M	0.07%	Add 74.74%
Braidwell LP	1.17%	$68.3M	2.53%	Reduce 15.47%
Nuveen, LLC	1.03%	$59.9M	0.01%	Not reported
Invesco Ltd.	0.93%	$54.5M	0.00%	Not reported
Orbimed Advisors LLC	0.92%	$53.9M	1.00%	Not reported
Caligan Partners LP	0.92%	$53.7M	2.53%	Reduce 36.11%
American Century Companies Inc	0.91%	$53.4M	0.02%	Not reported
Federated Hermes, Inc.	0.91%	$53.3M	0.08%	Not reported
Capital World Investors	0.89%	$52.1M	0.01%	Add 2.70%
Goldman Sachs Group Inc	0.80%	$46.7M	0.00%	Not reported
Vanguard Portfolio Management LLC	0.77%	$45.2M	0.00%	Not reported
Vestal Point Capital, LP	0.72%	$42.3M	0.99%	Add 9.39%
Alyeska Investment Group, L.P.	0.72%	$42.1M	0.11%	Not reported
Marshall Wace, LLP	0.71%	$41.6M	0.03%	Not reported
Rock Springs Capital Management LP	0.71%	$41.3M	2.01%	Reduce 10.37%
Northern Trust Corp	0.69%	$40.5M	0.00%	Not reported
Panagora Asset Management Inc	0.69%	$40.1M	0.12%	Not reported
First Turn Management, LLC	0.62%	$36.2M	3.88%	Reduce 23.72%
Tudor Investment Corp Et Al	0.56%	$32.9M	0.05%	Not reported
Loomis Sayles & Co L P	0.55%	$31.8M	0.04%	Reduce 6.66%
Octagon Capital Advisors LP	0.51%	$29.6M	2.66%	Not reported
Novo Holdings A/S	0.50%	$29.3M	1.70%	Not reported
Logos Global Management LP	0.47%	$27.2M	1.17%	Not reported
Trails Edge Capital Partners, LP	0.45%	$26.6M	4.22%	Not reported
Bank of New York Mellon Corp	0.44%	$25.4M	0.00%	Not reported
Algert Global LLC	0.43%	$25.3M	0.30%	Not reported
Aberdeen Group plc	0.42%	$24.7M	0.03%	Reduce 32.99%
Morgan Stanley	0.42%	$24.5M	0.00%	Not reported
Fiera Capital Corp	0.42%	$24.5M	0.09%	Reduce 42.83%
Bank of America Corp	0.42%	$24.4M	0.00%	Not reported

50 of 294 holders

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