Cubist Systematic Strategies, LLC
UK short positions the FCA published under this name: 6 companies and 18 disclosures between 23 Feb 2016 and 8 Aug 2025. Each figure is that position as a percentage of the company's issued share capital, not a money value, and percentages are not comparable or summable across companies.
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Positions open when the register closed
No position was still open in the register's final snapshot of 10 Jul 2026: every chain below had already fallen back below the 0.5% publication threshold.
Full disclosure history
Every disclosure the archive holds, grouped by company and ordered oldest first within each chain. A chain begins when the position first crossed 0.5% and ends either at the freeze or at the last disclosure before it fell back below the threshold.
Wizz Air Holdings PLC
closed 8 Aug 20252 disclosures · peak 0.50% · first 4 Aug 2025 · last 8 Aug 2025
4 Aug 2025 0.50% · 8 Aug 2025 0.47%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
JOHN WOOD GROUP LIMITED
closed 23 Apr 20256 disclosures · peak 0.53% · first 28 Feb 2025 · last 23 Apr 2025
28 Feb 2025 0.53% · 5 Mar 2025 0.48% · 10 Mar 2025 0.50% · 19 Mar 2025 0.49% · 2 Apr 2025 0.50% · 23 Apr 2025 0.48%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
Close Brothers Group PLC
closed 15 Apr 20252 disclosures · peak 0.50% · first 27 Mar 2025 · last 15 Apr 2025
27 Mar 2025 0.50% · 15 Apr 2025 0.49%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
THE CITY OF LONDON INVESTMENT TRUST PLC
closed 12 Apr 20234 disclosures · peak 0.51% · first 21 Feb 2023 · last 12 Apr 2023
21 Feb 2023 0.51% · 13 Mar 2023 0.42% · 31 Mar 2023 0.50% · 12 Apr 2023 0.48%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
CARNIVAL PLC
closed 24 Oct 20222 disclosures · peak 0.51% · first 4 Oct 2022 · last 24 Oct 2022
4 Oct 2022 0.51% · 24 Oct 2022 0.46%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
MELROSE INDUSTRIES PLC
closed 24 Feb 20162 disclosures · peak 0.52% · first 23 Feb 2016 · last 24 Feb 2016
23 Feb 2016 0.52% · 24 Feb 2016 0.49%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
Frequently asked questions
- Which UK companies did Cubist Systematic Strategies, LLC short?
- The FCA's named register recorded Cubist Systematic Strategies, LLC against 6 UK companies between 2016 and 2026, across 18 disclosures. No position was still open when the register closed on 10 Jul 2026.
- Is this list current?
- No. It is a frozen archive. The FCA stopped publishing position-holder names on 13 July 2026 and now publishes one anonymous aggregate per company per day, so no new named UK disclosure exists after 10 Jul 2026. Today's UK figures are on each company's own page.
- Was this the whole of Cubist Systematic Strategies, LLC's UK short book?
- No. Only net short positions of 0.5% or more of a company's issued share capital were published with the holder's name. Smaller positions were reported to the FCA privately and never appeared in the register, so the archive is a floor, not a full book.
Source: the Financial Conduct Authority's daily short positions file, captured on 10 Jul 2026 from fca.org.uk and archived unchanged. Figures are as the FCA published them; this site is not affiliated with the FCA. Nothing here is investment advice.