Spanish short selling: week 40, 2025
From 29 Sep 2025 to 3 Oct 2025, 30 Spain companies had disclosed short positions across 5 publication days. Changes are percentage points (pp) of issued share capital, between each company's last figure before the week and its last figure of the week, from official CNMV data.
Biggest rises
| Company | Start | End | Change (pp) |
|---|---|---|---|
| GRENERGY RENOVABLES, S.A. | 0.52% | 1.03% | +0.51 |
| AMPER, S.A. | 0.50% | 1.01% | +0.51 |
| ORYZON GENOMICS, S.A. | 2.31% | 2.55% | +0.24 |
| TALGO, S.A. | 1.21% | 1.23% | +0.02 |
Biggest falls
| Company | Start | End | Change (pp) |
|---|---|---|---|
| SOLARIA ENERGIA Y MEDIOAMBIENTE, S.A. | 10.23% | 7.27% | −2.96 |
| ENAGAS, S.A. | 9.51% | 9.07% | −0.44 |
| SACYR, S.A. | 1.41% | 1.40% | −0.01 |
New disclosures
No companies entered the dataset this week.
Most shorted at week end
- ENAGAS, S.A., 9.07%
- SOLARIA ENERGIA Y MEDIOAMBIENTE, S.A., 7.27%
- REPSOL, S.A., 2.80%
- ORYZON GENOMICS, S.A., 2.55%
- GRIFOLS, S.A., 2.23%
Full table: most shorted Spanish stocks.