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HowShorted

How shorted is AGIOS PHARMACEUTICALS, INC.? AGIO

#436most shorted US stockof 3,805 ranked stocks, more shorted than 88%

12.66%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.04
5 reports (~10 weeks)
+1.30
days to cover
9.46
Aggregate net short position time series for AGIOS PHARMACEUTICALS, 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 AGIOS PHARMACEUTICALS, 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
30 Jul 202611.15% 15 Jul 202611.46% 31 Jul 2026+0.31
29 Apr 202612.09% 15 Apr 202611.73% 30 Apr 2026−0.36
12 Feb 202611.54% 30 Jan 202610.80% 13 Feb 2026−0.74
30 Oct 20258.56% 15 Oct 20257.89% 31 Oct 2025−0.67
31 Jul 20257.22% 15 Jul 20258.29% 15 Aug 2025+1.07
1 May 20256.79% 30 Apr 20257.18% 15 May 2025+0.39
13 Feb 20258.81% 31 Jan 20258.08% 14 Feb 2025−0.73
31 Oct 20247.22% 15 Oct 20247.98% 15 Nov 2024+0.76

Fails to deliver

The SEC's fails-to-deliver figure for AGIO: 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
94
17 Aug 2026
Highest in window
16,322
21 Nov 2025
Days with a balance
36
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for AGIOS PHARMACEUTICALS, 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 16K shares.

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Sector: Healthcare

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202612.66%+0.04
31 Aug 202612.62%−0.16
14 Aug 202612.78%+1.32
31 Jul 202611.46%+0.31
15 Jul 202611.15%−0.21
30 Jun 202611.36%−0.24
15 Jun 202611.60%−0.05
29 May 202611.65%−0.88
15 May 202612.53%+0.80
30 Apr 202611.73%−0.36
15 Apr 202612.09%+0.82
31 Mar 202611.27%+0.71
13 Mar 202610.56%−0.09
27 Feb 202610.65%−0.15
13 Feb 202610.80%−0.74
30 Jan 202611.54%−1.23
15 Jan 202612.77%+0.61
31 Dec 202512.16%+1.65
15 Dec 202510.51%+1.14
28 Nov 20259.37%+1.94
14 Nov 20257.43%−0.46
31 Oct 20257.89%−0.67
15 Oct 20258.56%−0.36
30 Sep 20258.92%+0.77
15 Sep 20258.15%−0.05
29 Aug 20258.20%−0.09
15 Aug 20258.29%+1.23
31 Jul 20257.06%−0.16
15 Jul 20257.22%+0.69
30 Jun 20256.53%−0.94
13 Jun 20257.47%+0.13
30 May 20257.34%+0.16
15 May 20257.18%+0.39
30 Apr 20256.79%+0.72
15 Apr 20256.07%−0.12
31 Mar 20256.19%+0.25
14 Mar 20255.94%−0.94
28 Feb 20256.88%−1.20
14 Feb 20258.08%−0.73
31 Jan 20258.81%−0.57
15 Jan 20259.38%−0.31
31 Dec 20249.69%+0.71
13 Dec 20248.98%+0.96
29 Nov 20248.02%+0.04
15 Nov 20247.98%+0.37
31 Oct 20247.61%+0.39
15 Oct 20247.22%+1.46
30 Sep 20245.76%+0.53
13 Sep 20245.23%+0.13
30 Aug 20245.10%−0.97
15 Aug 20246.07%−0.17
31 Jul 20246.24%+0.62
15 Jul 20245.62%+0.11
28 Jun 20245.51%−1.93
14 Jun 20247.44%−0.43
31 May 20247.87%−2.84
15 May 202410.71%−0.75
30 Apr 202411.46%−0.38
15 Apr 202411.84%+0.09
28 Mar 202411.75%−0.44
15 Mar 202412.19%−0.86
29 Feb 202413.05%−0.56
15 Feb 202413.61%+0.48
31 Jan 202413.13%−1.23
12 Jan 202414.36%+1.66
29 Dec 202312.70%+0.41
15 Dec 202312.29%+0.82
30 Nov 202311.47%+0.70
15 Nov 202310.77%+0.64
31 Oct 202310.13%+0.22
13 Oct 20239.91%−0.57
29 Sep 202310.48%−0.37
15 Sep 202310.85%+0.26
31 Aug 202310.59%−0.10
15 Aug 202310.69%−0.17
31 Jul 202310.86%−0.34
14 Jul 202311.20%+0.57
30 Jun 202310.63%+0.25
15 Jun 202310.38%+0.06
31 May 202310.32%−0.10
15 May 202310.42%+0.16
28 Apr 202310.26%+0.51
14 Apr 20239.75%−0.73
31 Mar 202310.48%−0.35
15 Mar 202310.83%+0.12
28 Feb 202310.71%+0.19
15 Feb 202310.52%+0.02
31 Jan 202310.50%−1.68
13 Jan 202312.18%−0.14
30 Dec 202212.32%+0.25
15 Dec 202212.07%+0.47
30 Nov 202211.60%+0.12
15 Nov 202211.48%−0.14
31 Oct 202211.62%+0.79
14 Oct 202210.83%+0.66
30 Sep 202210.17%−0.20
15 Sep 202210.37%+0.34
31 Aug 202210.03%−1.23
15 Aug 202211.26%−0.51
29 Jul 202211.77%+0.39
15 Jul 202211.38%+0.16
30 Jun 202211.22%−0.50
15 Jun 202211.72%−0.19
31 May 202211.91%+0.97
13 May 202210.94%+0.17
29 Apr 202210.77%−0.91
14 Apr 202211.68%+0.38
31 Mar 202211.30%−0.34
15 Mar 202211.64%+0.26
28 Feb 202211.38%−0.04
15 Feb 202211.42%+0.27
31 Jan 202211.15%+0.46
14 Jan 202210.69%+0.43
31 Dec 202110.26%−1.75
15 Dec 202112.01%−1.63
30 Nov 202113.64%−0.29
15 Nov 202113.93%+0.96
29 Oct 202112.97%+1.66
15 Oct 202111.31%+0.77
30 Sep 202110.54%+0.84
15 Sep 20219.70%+0.14
31 Aug 20219.56%+0.11
13 Aug 20219.45%+1.28
30 Jul 20218.17%+0.01
15 Jul 20218.16%+0.75
30 Jun 20217.41%+0.18
15 Jun 20217.23%−0.35
28 May 20217.58%−0.72
14 May 20218.30%−0.41
30 Apr 20218.71%+0.73
15 Apr 20217.98%+0.34
31 Mar 20217.64%−1.40
15 Mar 20219.04%+0.63
26 Feb 20218.41%+0.21
12 Feb 20218.20%+0.25
29 Jan 20217.95%−0.02
15 Jan 20217.97%−0.47
31 Dec 20208.44%+0.59
15 Dec 20207.85%+0.69
30 Nov 20207.16%−0.89
13 Nov 20208.05%−0.72
30 Oct 20208.77%−1.76
15 Oct 202010.53%+0.51
30 Sep 202010.02%+1.27
15 Sep 20208.75%−0.60
31 Aug 20209.35%−0.26
14 Aug 20209.61%+0.66
31 Jul 20208.95%−0.07
15 Jul 20209.02%−1.81
30 Jun 202010.83%−0.06
15 Jun 202010.89%−0.20
29 May 202011.09%−0.23
15 May 202011.32%−0.46
30 Apr 202011.78%−0.44
15 Apr 202012.22%+0.02
31 Mar 202012.20%+0.23
13 Mar 202011.97%−0.51
28 Feb 202012.48%−0.27
14 Feb 202012.75%−1.03
31 Jan 202013.78%−1.38
15 Jan 202015.16%−0.17
31 Dec 201915.33%−0.04
13 Dec 201915.37%−0.38
29 Nov 201915.75%+0.75
15 Nov 201915.00%−3.03
31 Oct 201918.03%−0.54
15 Oct 201918.57%−1.00
30 Sep 201919.57%+1.53
13 Sep 201918.04%+1.04
30 Aug 201917.00%−0.28
15 Aug 201917.28%+1.09
31 Jul 201916.19%+0.37
15 Jul 201915.82%+0.35
28 Jun 201915.47%+0.79
14 Jun 201914.68%+0.21
31 May 201914.47%+0.50
15 May 201913.97%−0.16
30 Apr 201914.13%−0.11
15 Apr 201914.24%+0.14
29 Mar 201914.10%−0.05
15 Mar 201914.15%+0.78
28 Feb 201913.37%+0.82
15 Feb 201912.55%+0.24
31 Jan 201912.31%−0.02
15 Jan 201912.33%+0.31
31 Dec 201812.02%+0.80
14 Dec 201811.22%+0.02
30 Nov 201811.20%−0.66
15 Nov 201811.86%+0.78
31 Oct 201811.08%+1.49
15 Oct 20189.59%−0.17
28 Sep 20189.76%+0.75
14 Sep 20189.01%+0.25
31 Aug 20188.76%+0.02
15 Aug 20188.74%+0.12
31 Jul 20188.62%+0.41
13 Jul 20188.21%−0.33
29 Jun 20188.54%−0.36
15 Jun 20188.90%+0.53
31 May 20188.37%−0.39
15 May 20188.76%−0.14
30 Apr 20188.90%−0.64
13 Apr 20189.54%−0.21
29 Mar 20189.75%+0.51
15 Mar 20189.24%+0.03
28 Feb 20189.21%−0.95
15 Feb 201810.16%−2.28
31 Jan 201812.44%−1.35
12 Jan 201813.79%+0.77
29 Dec 201713.02%–

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

Frequently asked questions

How shorted is AGIOS PHARMACEUTICALS, INC. right now?
12.66% of AGIOS PHARMACEUTICALS, INC.'s (AGIO) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 436th 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 AGIO'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 AGIO's days to cover?
9.46 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.