Banco Santander, S.A. short interest
Short interest in Banco Santander, S.A. was 40.8 million shares at the 15 September 2026 settlement, down 22.2% on the previous settlement, with 5.34 days to cover at an average daily volume of 7.6 million shares, as reported to FINRA.
| Settlement | Shares short | Change | Average daily volume | Days to cover |
|---|---|---|---|---|
| 15 September 2026 | 40,768,871 | -22.2% | 7,634,967 | 5.34 |
| 31 August 2026 | 52,415,840 | -51.3% | 24,793,327 | 2.11 |
| 14 August 2026 | 107,668,073 | +21.2% | 14,700,785 | 7.32 |
| 31 July 2026 | 88,817,519 | +2.4% | 10,257,405 | 8.66 |
| 15 July 2026 | 86,766,064 | -0.2% | 8,906,793 | 9.74 |
| 30 June 2026 | 86,977,172 | -4.8% | 8,006,515 | 10.86 |
| 15 June 2026 | 91,408,001 | -4.2% | 8,525,648 | 10.72 |
| 29 May 2026 | 95,360,947 | +14.5% | 10,757,306 | 8.86 |
| 15 May 2026 | 83,303,993 | +5.8% | 6,558,492 | 12.70 |
| 30 April 2026 | 78,720,035 | +0.8% | 7,361,404 | 10.69 |
| 15 April 2026 | 78,087,243 | -4.1% | 10,262,725 | 7.61 |
| 31 March 2026 | 81,435,612 | +9.9% | 12,983,793 | 6.27 |
FINRA publishes consolidated short interest twice a month, about ten days after each settlement. Days to cover is shares short over average daily volume. Short interest as a share of the float is not shown: the float is not in the public record.
Source
FINRA equity short interest data, the public dataset.
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