Pfizer Inc. short interest
Short interest in Pfizer Inc. was 151.5 million shares at the 31 August 2026 settlement, up 1.5% on the previous settlement, with 4.33 days to cover at an average daily volume of 35.0 million shares, as reported to FINRA.
| Settlement | Shares short | Change | Average daily volume | Days to cover |
|---|---|---|---|---|
| 31 August 2026 | 151,537,890 | +1.5% | 35,022,905 | 4.33 |
| 14 August 2026 | 149,271,132 | -7.6% | 42,256,400 | 3.53 |
| 31 July 2026 | 161,478,227 | -1.4% | 38,594,371 | 4.18 |
| 15 July 2026 | 163,820,439 | +0.1% | 42,807,581 | 3.83 |
| 30 June 2026 | 163,578,117 | +0.9% | 60,914,282 | 2.69 |
| 15 June 2026 | 162,075,723 | -0.4% | 35,201,004 | 4.60 |
| 29 May 2026 | 162,659,281 | +3.3% | 32,807,683 | 4.96 |
| 15 May 2026 | 157,459,584 | +12.2% | 38,197,706 | 4.12 |
| 30 April 2026 | 140,316,585 | +5.2% | 35,018,455 | 4.01 |
| 15 April 2026 | 133,414,052 | +0.7% | 33,400,197 | 3.99 |
| 31 March 2026 | 132,465,697 | +0.8% | 43,043,658 | 3.08 |
| 13 March 2026 | 131,409,882 | -8.0% | 40,476,968 | 3.25 |
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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