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HowShorted

How shorted is Pfizer Inc.? PFE

#2,599most shorted US stockof 3,805 ranked stocks, more shorted than 31%

2.72%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.06
5 reports (~10 weeks)
−0.15
days to cover
4.90
Aggregate net short position time series for Pfizer Inc.

Markers along the chart's base: ▲ results announced (an 8-K reporting results was filed) ▲ quarterly or annual report filed. Dates are SEC filing dates; hover a point to see events since the previous settlement.

Days to cover

FINRA's own figure: reported shares short divided by the stock's average daily trading volume, published alongside each settlement. It expresses the short position in days of typical trading rather than as a percentage of the company; the two can move differently.

Aggregate net short position time series for Pfizer Inc. days to cover

Short interest around results

For each results announcement (an 8-K reporting results, by its SEC filing date), the FINRA settlement before it and the first one after. Settlements fall twice a month, so the two figures can sit up to a month apart and much else changes in between: this shows what was reported, not why.

Reported short interest before and after each results announcement
Results filedSettlement beforeSettlement afterChange
4 Aug 20262.83% 31 Jul 20262.62% 14 Aug 2026−0.21
5 May 20262.46% 30 Apr 20262.76% 15 May 2026+0.30
3 Feb 20262.52% 30 Jan 20262.57% 13 Feb 2026+0.05
4 Nov 20252.23% 31 Oct 20252.30% 14 Nov 2025+0.07
5 Aug 20251.90% 31 Jul 20252.00% 15 Aug 2025+0.10
29 Apr 20251.90% 15 Apr 20252.03% 30 Apr 2025+0.13
4 Feb 20251.30% 31 Jan 20251.57% 14 Feb 2025+0.27
29 Oct 20241.25% 15 Oct 20241.09% 31 Oct 2024−0.16

Fails to deliver

The SEC's fails-to-deliver figure for PFE: the aggregate net balance of shares that failed to be delivered at each settlement date, published by the SEC twice a month and shown here verbatim for the trailing window. A balance is not a daily flow, and a fail has many ordinary causes; the SEC says it cannot guarantee the accuracy of the data. See what fails to deliver are and the largest balances today.

Last balance on file
9,986
11 Sep 2026
Highest in window
6,511,950
22 Jun 2026
Days with a balance
157
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Pfizer Inc. fails to deliver

Source: U.S. Securities and Exchange Commission, fails-to-deliver data (public domain). Only settlement days with a positive balance appear; the largest balance in the window was 6.5M shares.

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Sector: Healthcare

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 20262.72%+0.06
31 Aug 20262.66%+0.04
14 Aug 20262.62%−0.21
31 Jul 20262.83%−0.04
15 Jul 20262.87%0.00
30 Jun 20262.87%+0.03
15 Jun 20262.84%−0.01
29 May 20262.85%+0.09
15 May 20262.76%+0.30
30 Apr 20262.46%+0.11
15 Apr 20262.35%+0.02
31 Mar 20262.33%+0.02
13 Mar 20262.31%−0.20
27 Feb 20262.51%−0.06
13 Feb 20262.57%+0.05
30 Jan 20262.52%+0.24
15 Jan 20262.28%−0.01
31 Dec 20252.29%−0.16
15 Dec 20252.45%0.00
28 Nov 20252.45%+0.15
14 Nov 20252.30%+0.07
31 Oct 20252.23%+0.18
15 Oct 20252.05%+0.05
30 Sep 20252.00%+0.01
15 Sep 20251.99%+0.17
29 Aug 20251.82%−0.18
15 Aug 20252.00%+0.10
31 Jul 20251.90%+0.15
15 Jul 20251.75%−0.22
30 Jun 20251.97%+0.09
13 Jun 20251.88%+0.03
30 May 20251.85%−0.04
15 May 20251.89%−0.14
30 Apr 20252.03%+0.13
15 Apr 20251.90%+0.18
31 Mar 20251.72%−0.03
14 Mar 20251.75%+0.07
28 Feb 20251.68%+0.11
14 Feb 20251.57%+0.27
31 Jan 20251.30%−0.32
15 Jan 20251.62%+0.28
31 Dec 20241.34%−0.17
13 Dec 20241.51%−0.08
29 Nov 20241.59%−0.08
15 Nov 20241.67%+0.58
31 Oct 20241.09%−0.16
15 Oct 20241.25%+0.06
30 Sep 20241.19%−0.13
13 Sep 20241.32%+0.17
30 Aug 20241.15%+0.06
15 Aug 20241.09%−0.06
31 Jul 20241.15%+0.17
15 Jul 20240.98%−0.08
28 Jun 20241.06%−0.04
14 Jun 20241.10%−0.24
31 May 20241.34%+0.10
15 May 20241.24%+0.13
30 Apr 20241.11%−0.10
15 Apr 20241.21%+0.06
28 Mar 20241.15%−0.12
15 Mar 20241.27%+0.10
29 Feb 20241.17%+0.10
15 Feb 20241.07%0.00
31 Jan 20241.07%+0.05
12 Jan 20241.02%+0.01
29 Dec 20231.01%−0.09
15 Dec 20231.10%+0.09
30 Nov 20231.01%−0.01
15 Nov 20231.02%+0.18
31 Oct 20230.84%−0.13
13 Oct 20230.97%+0.07
29 Sep 20230.90%+0.02
15 Sep 20230.88%−0.01
31 Aug 20230.89%−0.04
15 Aug 20230.93%+0.12
31 Jul 20230.81%−0.12
14 Jul 20230.93%−0.12
30 Jun 20231.05%+0.07
15 Jun 20230.98%−0.01
31 May 20230.99%+0.18
15 May 20230.81%+0.03
28 Apr 20230.78%+0.04
14 Apr 20230.74%−0.13
31 Mar 20230.87%+0.08
15 Mar 20230.79%+0.10
28 Feb 20230.69%+0.01
15 Feb 20230.68%−0.02
31 Jan 20230.70%+0.04
13 Jan 20230.66%−0.10
30 Dec 20220.76%−0.27
15 Dec 20221.03%−0.09
30 Nov 20221.12%−0.13
15 Nov 20221.25%+0.28
31 Oct 20220.97%−0.14
14 Oct 20221.11%+0.03
30 Sep 20221.08%−0.06
15 Sep 20221.14%+0.03
31 Aug 20221.11%−0.10
15 Aug 20221.21%+0.14
29 Jul 20221.07%−0.13
15 Jul 20221.20%−0.03
30 Jun 20221.23%−0.14
15 Jun 20221.37%−0.01
31 May 20221.38%+0.35
13 May 20221.03%−0.18
29 Apr 20221.21%+0.09
14 Apr 20221.12%+0.02
31 Mar 20221.10%+0.01
15 Mar 20221.09%−0.08
28 Feb 20221.17%+0.04
15 Feb 20221.13%−0.10
31 Jan 20221.23%+0.09
14 Jan 20221.14%+0.10
31 Dec 20211.04%−0.14
15 Dec 20211.18%+0.05
30 Nov 20211.13%0.00
15 Nov 20211.13%+0.08
29 Oct 20211.05%+0.08
15 Oct 20210.97%+0.04
30 Sep 20210.93%−0.03
15 Sep 20210.96%−0.09
31 Aug 20211.05%−0.05
13 Aug 20211.10%+0.12
30 Jul 20210.98%−0.12
15 Jul 20211.10%−0.03
30 Jun 20211.13%+0.06
15 Jun 20211.07%+0.01
28 May 20211.06%+0.03
14 May 20211.03%−0.01
30 Apr 20211.04%−0.05
15 Apr 20211.09%−0.09
31 Mar 20211.18%−0.04
15 Mar 20211.22%+0.01
26 Feb 20211.21%+0.07
12 Feb 20211.14%0.00
29 Jan 20211.14%−0.04
15 Jan 20211.18%+0.01
31 Dec 20201.17%+0.03
15 Dec 20201.14%−0.01
30 Nov 20201.15%−0.05
13 Nov 20201.20%+0.37
30 Oct 20200.83%+0.10
15 Oct 20200.73%−0.08
30 Sep 20200.81%+0.04
15 Sep 20200.77%−0.04
31 Aug 20200.81%−0.09
14 Aug 20200.90%−0.06
31 Jul 20200.96%+0.11
15 Jul 20200.85%−0.08
30 Jun 20200.93%−0.04
15 Jun 20200.97%+0.03
29 May 20200.94%−0.01
15 May 20200.95%+0.07
30 Apr 20200.88%+0.08
15 Apr 20200.80%−0.04
31 Mar 20200.84%−0.23
13 Mar 20201.07%+0.10
28 Feb 20200.97%−0.09
14 Feb 20201.06%−0.04
31 Jan 20201.10%+0.07
15 Jan 20201.03%0.00
31 Dec 20191.03%−0.03
13 Dec 20191.06%+0.01
29 Nov 20191.05%+0.12
15 Nov 20190.93%+0.03
31 Oct 20190.90%+0.01
15 Oct 20190.89%+0.03
30 Sep 20190.86%−0.20
13 Sep 20191.06%0.00
30 Aug 20191.06%+0.06
15 Aug 20191.00%−0.22
31 Jul 20191.22%+0.18
15 Jul 20191.04%+0.01
28 Jun 20191.03%−0.12
14 Jun 20191.15%−0.10
31 May 20191.25%+0.05
15 May 20191.20%+0.34
30 Apr 20190.86%−0.31
15 Apr 20191.17%−0.27
29 Mar 20191.44%−0.42
15 Mar 20191.86%−0.63
28 Feb 20192.49%+1.75
31 Jan 20190.74%−0.07
15 Jan 20190.81%−0.05
31 Dec 20180.86%−0.17
14 Dec 20181.03%+0.16
30 Nov 20180.87%+0.05
15 Nov 20180.82%+0.03
31 Oct 20180.79%−0.07
15 Oct 20180.86%+0.01
28 Sep 20180.85%−0.01
14 Sep 20180.86%+0.03
31 Aug 20180.83%−0.06
15 Aug 20180.89%−0.04
31 Jul 20180.93%−0.06
13 Jul 20180.99%−0.02
29 Jun 20181.01%−0.10
15 Jun 20181.11%+0.06
31 May 20181.05%−0.04
15 May 20181.09%−0.01
30 Apr 20181.10%−0.26
13 Apr 20181.36%−0.29
29 Mar 20181.65%−0.75
15 Mar 20182.40%+1.36
28 Feb 20181.04%−0.04
15 Feb 20181.08%+0.12
31 Jan 20180.96%+0.08
12 Jan 20180.88%+0.04
29 Dec 20170.84%–

Newest first. Scroll inside the table for earlier dates, back to 29 Dec 2017.

Frequently asked questions

How shorted is Pfizer Inc. right now?
2.72% of Pfizer Inc.'s (PFE) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 2,599th most shorted US stock, out of 3,805 we rank.
What does this number include?
FINRA member firms must report their short positions in all US equities twice a month; FINRA consolidates them per security. We divide that official share count by the company's shares outstanding from its SEC filings. This is the regulatory figure, not a daily estimate.
Why does it only update twice a month?
US short interest is reported for settlement on the 15th and the last business day of each month, and FINRA publishes the consolidated figures about nine business days later. That cadence is set by regulation; no daily official figure exists.
Is this PFE's short float?
No. This is short interest as a percentage of shares outstanding, the count in the company's SEC filings. "Short float" divides the same FINRA short count by the public float, which excludes closely held shares, so it comes out higher for the same company. We publish no float estimates: the float is not a regulatory figure.
What is PFE's days to cover?
4.90 days for settlement date 15 Sep 2026: FINRA's own short interest ratio, the reported shares short divided by average daily trading volume. It is published in the same FINRA file and shown verbatim; we hold no volume data ourselves.
Which funds are short?
US public short interest is aggregate-only: individual short sellers are not named. Only some EU markets publish named positions.