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How shorted is SIGMAROC PLC? GB00BYX5K988

#36most shorted UK stockof 421 companies with disclosed positions, more shorted than 91%

6.89%
of issued share capital sold short ยท 9 Oct 2026
5-day change
+0.33
20-day change
+2.43
Aggregate net short position time series for SIGMAROC PLC
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Before 2026: the named era

Reconstructed from the frozen named register: the sum of individually disclosed positions of 0.5% or more in SIGMAROC PLC at each disclosure date, back to 22 Apr 2026. This is a lower bound and a different measure from today's aggregate above, because positions between 0.1% and 0.5% were reported to the FCA but never published with names, so the two series are charted separately and are not comparable point for point. See the methodology.

Aggregate net short position time series for SIGMAROC PLC (pre-2026 named aggregate)

History

Full disclosed short interest history
Position dateShort %Change
9 Oct 20266.89%โˆ’0.01
8 Oct 20266.90%+0.07
7 Oct 20266.83%+0.10
6 Oct 20266.73%+0.07
5 Oct 20266.66%+0.10
1 Oct 20266.56%+0.30
30 Sep 20266.26%+0.26
25 Sep 20266.00%+0.12
24 Sep 20265.88%+0.34
23 Sep 20265.54%+0.30
22 Sep 20265.24%โˆ’0.09
21 Sep 20265.33%+0.29
18 Sep 20265.04%+0.24
17 Sep 20264.80%โˆ’0.06
14 Sep 20264.86%+0.62
11 Sep 20264.24%+0.01
10 Sep 20264.23%+0.09
9 Sep 20264.14%+0.11
8 Sep 20264.03%+0.22
7 Sep 20263.81%โˆ’0.65
4 Sep 20264.46%+0.29
3 Sep 20264.17%+0.22
1 Sep 20263.95%+0.19
28 Aug 20263.76%โˆ’0.01
26 Aug 20263.77%โˆ’0.30
24 Aug 20264.07%+0.20
18 Aug 20263.87%สณ+0.11
14 Aug 20263.76%+0.20
10 Aug 20263.56%สณโˆ’0.22
3 Aug 20263.78%โˆ’0.10
29 Jul 20263.88%+0.11
28 Jul 20263.77%+0.20
23 Jul 20263.57%โˆ’0.01
20 Jul 20263.58%โˆ’0.01
17 Jul 20263.59%+0.10
10 Jul 20263.49%สณโˆ’0.19
9 Jul 20263.68%โ€“

Newest first. Scroll inside the table for earlier dates, back to 9 Jul 2026.

สณ figure revised by the FCA after first publication. See how revisions work.

About this data

ISIN
GB00BYX5K988
Reportable Shares List
On the FCA's RSL since 13 Jul 2026.
First seen in dataset
9 Jul 2026
Listing
SIGMAROC PLC on the London Stock Exchange โ†—

We show regulatory short-position data only: no prices, no valuations, no recommendations.

Frequently asked questions

How shorted is SIGMAROC PLC right now?
6.89% of SIGMAROC PLC's issued share capital was sold short as of 9 Oct 2026, per the FCA's aggregate net short position publication. That makes it the 36th most shorted UK stock, out of 421 companies with disclosed positions.
What is SIGMAROC PLC's short interest?
6.89% of issued share capital as of 9 Oct 2026. "Short interest" is the US term; the FCA publishes the aggregate net short position, the sum of every disclosed position of 0.2% or more, so it is a lower bound on all short selling in the stock.
What does this number include?
It is the sum of every individual net short position amounting to 0.2% or more of the company's issued share capital, as notified to the FCA. Smaller positions are not counted, so total short interest can be somewhat higher.
Which funds are shorting SIGMAROC PLC?
Since 13 July 2026 the FCA no longer publishes position-holder names, only the aggregate per company. Under the old regime, individual funds with positions of 0.5% or more were named publicly.
How often is this updated?
The FCA publishes every working day around midday, two working days after the position date. We ingest each publication the same day and re-check recent days for corrections.