Which UK companies did Portsea Asset Management LLP short?

The FCA's named register recorded Portsea Asset Management LLP against 16 UK companies between 2017 and 2026, across 172 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 Portsea Asset Management LLP'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.

Portsea Asset Management LLP

UK short positions the FCA published under this name: 16 companies and 172 disclosures between 1 Dec 2017 and 19 Aug 2021. 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.

Frozen archive. This is the pre-2026 UK named register, which stopped on 10 Jul 2026. The FCA now publishes aggregate positions only, with no holder names, so this page can never gain a new disclosure. See how UK disclosure changed in 2026. Live UK figures are on the company pages, linked below where a company is still reportable.

Cite this page

Plain

Short position data for Portsea Asset Management LLP (UK named register archive): the FCA, compiled by howshorted.com, position date 10 Jul 2026. https://howshorted.com/uk/holders/portsea-asset-management-llp/

Wikipedia

<ref>{{cite web |title=Portsea Asset Management LLP (UK named register archive) short position data |url=https://howshorted.com/uk/holders/portsea-asset-management-llp/ |website=HowShorted |publisher=howshorted.com (data: the FCA) |date=2026-07-10 |access-date=2026-10-13}}</ref>

BibTeX

@misc{howshorted-portsea-asset-management-llp-uk-named-re-2026-07-10,
  title        = {Portsea Asset Management LLP (UK named register archive) short position data},
  author       = {{HowShorted}},
  howpublished = {\url{https://howshorted.com/uk/holders/portsea-asset-management-llp/}},
  note         = {Data: the FCA, position date 10 Jul 2026; accessed 2026-10-13},
  year         = {2026}
}

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.

DOMINO'S PIZZA GROUP PLC
closed 19 Aug 2021
33 disclosures · peak 1.03% · first 16 Mar 2018 · last 19 Aug 2021
16 Mar 2018 0.55% · (9 further disclosures) · 10 Mar 2020 0.30% · 19 Jun 2020 0.52% · 25 Jun 2020 0.49% · 2 Jul 2020 0.62% · 3 Jul 2020 0.73% · 24 Aug 2020 0.84% · 26 Aug 2020 0.90% · 9 Sep 2020 0.88% · 30 Sep 2020 0.70% · 1 Oct 2020 0.55% · 2 Oct 2020 0.32% · 26 Oct 2020 0.50% · 28 Oct 2020 0.63% · 30 Oct 2020 0.74% · 6 Nov 2020 0.85% · 9 Nov 2020 0.98% · 10 Nov 2020 1.03% · 1 Jul 2021 0.99% · 26 Jul 2021 0.81% · 27 Jul 2021 0.79% · 28 Jul 2021 0.62% · 3 Aug 2021 0.50% · 19 Aug 2021 0.43%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
HAMMERSON PLC
closed 13 Oct 2020
13 disclosures · peak 1.23% · first 14 May 2020 · last 13 Oct 2020
14 May 2020 0.71% · 15 May 2020 1.10% · 18 May 2020 1.23% · 2 Jun 2020 0.82% · 3 Jun 2020 0.33% · 24 Jun 2020 0.53% · 25 Jun 2020 0.62% · 4 Aug 2020 0.77% · 5 Aug 2020 0.84% · 11 Sep 2020 0.77% · 25 Sep 2020 0.65% · 9 Oct 2020 0.55% · 13 Oct 2020 0.46%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
AUTO TRADER GROUP PLC
closed 19 Mar 2020
11 disclosures · peak 0.72% · first 11 Dec 2018 · last 19 Mar 2020
11 Dec 2018 0.53% · 10 Jan 2019 0.61% · 25 Mar 2019 0.51% · 26 Mar 2019 0.47% · 5 Sep 2019 0.50% · 11 Sep 2019 0.64% · 2 Jan 2020 0.60% · 9 Mar 2020 0.72% · 17 Mar 2020 0.60% · 18 Mar 2020 0.58% · 19 Mar 2020 0.44%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
NMC Health PLC
closed 17 Dec 2019
8 disclosures · peak 0.71% · first 22 Aug 2019 · last 17 Dec 2019
22 Aug 2019 0.59% · 1 Oct 2019 0.48% · 11 Oct 2019 0.50% · 31 Oct 2019 0.46% · 5 Nov 2019 0.51% · 15 Nov 2019 0.60% · 5 Dec 2019 0.71% · 17 Dec 2019 0.10%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
BRITISH LAND COMPANY PUBLIC LIMITED COMPANY(THE)
closed 3 Dec 2019
4 disclosures · peak 0.61% · first 2 Jul 2019 · last 3 Dec 2019
2 Jul 2019 0.51% · 9 Aug 2019 0.61% · 1 Oct 2019 0.56% · 3 Dec 2019 0.49%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
Arrow Global Group PLC
closed 30 Jul 2019
29 disclosures · peak 1.90% · first 16 Feb 2018 · last 30 Jul 2019
16 Feb 2018 0.52% · (5 further disclosures) · 13 Apr 2018 1.27% · 6 Jun 2018 1.41% · 20 Jun 2018 1.37% · 10 Jul 2018 1.29% · 30 Aug 2018 1.34% · 4 Sep 2018 1.43% · 1 Oct 2018 1.24% · 2 Oct 2018 1.11% · 3 Oct 2018 1.06% · 11 Oct 2018 1.14% · 23 Oct 2018 1.21% · 26 Oct 2018 1.39% · 29 Oct 2018 1.43% · 1 Nov 2018 1.53% · 9 Nov 2018 1.76% · 16 Nov 2018 1.81% · 28 Dec 2018 1.90% · 28 May 2019 1.89% · 30 May 2019 1.44% · 31 May 2019 1.38% · 19 Jul 2019 1.15% · 24 Jul 2019 0.72% · 30 Jul 2019 0.36%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
Inmarsat PLC
closed 27 Mar 2019
5 disclosures · peak 0.90% · first 6 Mar 2019 · last 27 Mar 2019
6 Mar 2019 0.64% · 7 Mar 2019 0.78% · 8 Mar 2019 0.90% · 26 Mar 2019 0.71% · 27 Mar 2019 0.19%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
Metro Bank Holdings Plc
closed 27 Feb 2019
4 disclosures · peak 0.72% · first 20 Feb 2019 · last 27 Feb 2019
20 Feb 2019 0.53% · 21 Feb 2019 0.60% · 22 Feb 2019 0.72% · 27 Feb 2019 0.00%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
BOOHOO GROUP PLC
closed 30 Jan 2019
5 disclosures · peak 0.88% · first 21 Dec 2018 · last 30 Jan 2019
21 Dec 2018 0.50% · 10 Jan 2019 0.74% · 11 Jan 2019 0.88% · 14 Jan 2019 0.67% · 30 Jan 2019 0.49%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
LEARNING TECHNOLOGIES GROUP PLC
closed 25 Jan 2019
8 disclosures · peak 1.01% · first 27 Nov 2018 · last 25 Jan 2019
27 Nov 2018 0.65% · 29 Nov 2018 0.76% · 30 Nov 2018 1.01% · 4 Dec 2018 0.79% · 10 Jan 2019 0.86% · 23 Jan 2019 0.64% · 24 Jan 2019 0.54% · 25 Jan 2019 0.30%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
RPC Group PLC
closed 23 Oct 2018
20 disclosures · peak 0.92% · first 1 Feb 2018 · last 23 Oct 2018
1 Feb 2018 0.51% · 14 Feb 2018 0.62% · 6 Mar 2018 0.73% · 9 May 2018 0.81% · 22 May 2018 0.72% · 5 Jun 2018 0.67% · 6 Jun 2018 0.49% · 7 Jun 2018 0.52% · 12 Jun 2018 0.62% · 19 Jun 2018 0.71% · 26 Jun 2018 0.80% · 2 Jul 2018 0.70% · 3 Jul 2018 0.63% · 11 Jul 2018 0.70% · 10 Aug 2018 0.84% · 4 Sep 2018 0.92% · 20 Sep 2018 0.84% · 21 Sep 2018 0.69% · 25 Sep 2018 0.57% · 23 Oct 2018 0.47%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
THE BERKELEY GROUP HOLDINGS PLC
closed 12 Oct 2018
2 disclosures · peak 0.53% · first 3 Sep 2018 · last 12 Oct 2018
3 Sep 2018 0.53% · 12 Oct 2018 0.34%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
Intu Properties PLC
closed 5 Oct 2018
4 disclosures · peak 0.52% · first 2 May 2018 · last 5 Oct 2018
2 May 2018 0.52% · 20 Jul 2018 0.48% · 29 Aug 2018 0.50% · 5 Oct 2018 0.33%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
PETS AT HOME GROUP PLC
closed 4 Jun 2018
21 disclosures · peak 2.02% · first 1 Dec 2017 · last 4 Jun 2018
1 Dec 2017 0.85% · 6 Dec 2017 0.99% · 12 Dec 2017 1.13% · 9 Jan 2018 1.36% · 1 Feb 2018 1.61% · 1 Mar 2018 1.71% · 15 Mar 2018 1.85% · 20 Mar 2018 1.91% · 11 Apr 2018 2.02% · 12 Apr 2018 1.62% · 13 Apr 2018 1.70% · 17 Apr 2018 1.83% · 18 Apr 2018 1.90% · 19 Apr 2018 1.86% · 26 Apr 2018 1.91% · 18 May 2018 1.68% · 21 May 2018 1.53% · 22 May 2018 1.41% · 30 May 2018 1.18% · 31 May 2018 0.81% · 4 Jun 2018 0.21%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
Evoke plc
closed 17 May 2018
2 disclosures · peak 0.71% · first 11 May 2018 · last 17 May 2018
11 May 2018 0.71% · 17 May 2018 0.30%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
SIG PLC
closed 29 Mar 2018
3 disclosures · peak 0.64% · first 21 Mar 2018 · last 29 Mar 2018
21 Mar 2018 0.59% · 23 Mar 2018 0.64% · 29 Mar 2018 0.42%
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 Portsea Asset Management LLP short?: The FCA's named register recorded Portsea Asset Management LLP against 16 UK companies between 2017 and 2026, across 172 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 Portsea Asset Management LLP'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.

Portsea Asset Management LLP

Positions open when the register closed

Full disclosure history

NMC Health PLC

Arrow Global Group PLC

Inmarsat PLC

LEARNING TECHNOLOGIES GROUP PLC

RPC Group PLC

Intu Properties PLC

SIG PLC

Frequently asked questions