How shorted is Banco Santander SA? ES0113900J37
#382most shorted UK stockof 421 companies with disclosed positions, more shorted than 9%
0.29%
of issued share capital sold short · 21 Sep 2026
- 5-day change
- –
- 20-day change
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Sector: Financials
History
| Position date | Short % | Change |
|---|---|---|
| 21 Sep 2026 | 0.29% | −0.01 |
| 11 Sep 2026 | 0.30% | +0.10 |
| 24 Aug 2026 | 0.20% | 0.00 |
| 13 Jul 2026 | 0.20% | – |
About this data
- ISIN
- ES0113900J37
- Reportable Shares List
- On the FCA's RSL since 13 Jul 2026.
- First seen in dataset
- 13 Jul 2026
We show regulatory short-position data only: no prices, no valuations, no recommendations.
Frequently asked questions
- How shorted is Banco Santander SA right now?
- 0.29% of Banco Santander SA's issued share capital was sold short as of 21 Sep 2026, per the FCA's aggregate net short position publication. That makes it the 382nd most shorted UK stock, out of 421 companies with disclosed positions.
- What is Banco Santander SA's short interest?
- 0.29% of issued share capital as of 21 Sep 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 Banco Santander SA?
- 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.