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Castellum Aktiebolag

Short position disclosed on October 22, 2026.

3.67% of the capital sold short

5 disclosing funds

235 disclosures on record

SE0000379190 ISIN code

Evolution of the disclosed total

0%1%2%3%4%

Jan 2026Apr 2026Jul 2026Oct 2026

Sum of open short positions, as % of capital. Hover or tap the curve to see which funds make it up.

Over the whole history, the total peaked at 6.86% on May 23, 2023. The shaded band matches the twelve months of the first chart.

January 7, 2015 today

Open positions

The funds disclosing a short position that is still open.
Fund	% of capital	Over the year	Since
Arrowstreet Capital Limited Partnership	1.07%	+0.07 pt	September 22, 2026
Citadel Advisors LLC	0.84%	new	October 22, 2026
Millennium International Management LP	0.64%	+0.04 pt	October 16, 2026
Marchant MC Ltd	0.61%	new	October 20, 2026
Worldquant LLC	0.51%	+0.01 pt	October 22, 2026

In the United States CWQXF (OTC): 4,238,346 shares sold short on September 30, 2026. FINRA names no fund.

On the other side: the funds that hold Castellum Aktiebolag Titelia

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History of disclosures

235 disclosures on record for this share.
Date	Fund	% of capital
January 4, 2018	Marshall Wace LLP	0.50%
September 21, 2017	Pictet Asset Management SA	0.54%
September 20, 2017	Pictet Asset Management SA	0.54%
March 14, 2017	Bank of Montreal	1.00%
March 13, 2017	Bank of Montreal	1.00%
July 25, 2016	WorldQuant, LLC	0.50%
July 24, 2016	WorldQuant, LLC	0.50%
June 28, 2016	Omni Partners LLP	0.00%
June 16, 2016	Omni Partners LLP	0.53%
June 15, 2016	Omni Partners LLP	0.52%
June 14, 2016	GLG Partners LP	0.73%
June 14, 2016	Omni Partners LLP	0.52%
June 13, 2016	GLG Partners LP	0.73%
June 7, 2016	GLG Partners LP	0.73%
June 7, 2016	Millennium Capital Partners LLP	0.66%
June 6, 2016	GLG Partners LP	0.67%
June 6, 2016	Millennium Capital Partners LLP	0.66%
June 5, 2016	GLG Partners LP	0.67%
June 2, 2016	Credit Industriel et Commercial	0.58%
June 2, 2016	GLG Partners LP	0.55%
June 1, 2016	Credit Industriel et Commercial	0.58%
June 1, 2016	GLG Partners LP	0.55%
May 30, 2016	Cigogne Management S.A.	0.74%
May 29, 2016	Cigogne Management S.A.	0.74%
May 23, 2016	Thames River Capital LLP	0.53%
May 22, 2016	Thames River Capital LLP	0.53%
February 26, 2016	JPMorgan Asset Management (UK) Ltd	0.58%
February 25, 2016	JPMorgan Asset Management (UK) Ltd	0.62%
February 24, 2016	JPMorgan Asset Management (UK) Ltd	0.62%
November 25, 2015	JPMorgan Asset Management (UK) Ltd	0.71%
November 24, 2015	JPMorgan Asset Management (UK) Ltd	0.71%
November 19, 2015	JPMorgan Asset Management (UK) Ltd	0.69%
November 18, 2015	JPMorgan Asset Management (UK) Ltd	0.69%
January 8, 2015	JPMorgan Asset Management (UK) Ltd	0.53%
January 7, 2015	JPMorgan Asset Management (UK) Ltd	0.53%

Download 235 filings as CSV Columns: Date, Fund, Market, Disclosed position, Unit, End date. The other formats

Other companies sold short in Sweden

Samhällsbyggnadsbolaget i Norden AB 11.80% of the capital sold short
Elekta AB (publ) 9.14% of the capital sold short
JM AB 8.08% of the capital sold short
Truecaller AB 6.94% of the capital sold short
Dynavox Group AB 5.26% of the capital sold short
Aktiebolaget Electrolux 4.95% of the capital sold short
Xvivo Perfusion Aktiebolag 4.89% of the capital sold short
AAK AB (publ) 4.73% of the capital sold short
RaySearch Laboratories AB (publ) 4.71% of the capital sold short
Hemnet Group AB (publ) 4.44% of the capital sold short
Mips AB 4.40% of the capital sold short
Cibus Real Estate AB (publ) 4.06% of the capital sold short

Cite this page

The figure comes from the regulator register, not from this site. Quoting both lets your reader check it.

QuiVad, Castellum Aktiebolag, source Finansinspektionen, data as at October 22, 2026, https://www.quivad.com/action/castellum-aktiebolag?page=5