Skip to content
HowShorted

How shorted is Annexon, Inc.? ANNX

#254most shorted US stockof 3,805 ranked stocks, more shorted than 93%

16.08%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.38
5 reports (~10 weeks)
+1.25
days to cover
11.68
Aggregate net short position time series for Annexon, 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 Annexon, 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
12 Aug 202615.42% 31 Jul 202615.94% 14 Aug 2026+0.52
7 May 202611.82% 30 Apr 202612.17% 15 May 2026+0.35
30 Mar 202610.37% 13 Mar 20269.40% 31 Mar 2026−0.97
10 Nov 20256.17% 31 Oct 20255.52% 14 Nov 2025−0.65
14 Aug 20256.48% 31 Jul 20256.65% 15 Aug 2025+0.17
12 May 20256.26% 30 Apr 20256.83% 15 May 2025+0.57
3 Mar 20257.35% 28 Feb 20257.50% 14 Mar 2025+0.15
14 Nov 20246.20% 31 Oct 20245.70% 15 Nov 2024−0.50

Fails to deliver

The SEC's fails-to-deliver figure for ANNX: 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
4,715
8 Sep 2026
Highest in window
1,000,732
29 Jun 2026
Days with a balance
29
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Annexon, 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 1.0M shares.

Embed this chart

Paste this snippet to embed the interactive chart. It updates with each FINRA report and keeps the source attribution. Preview

Download chart cardShare on XRedditLinkedIn
Cite this page
Plain
Wikipedia
BibTeX

Sector: Healthcare

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202616.08%+0.38
31 Aug 202615.70%−0.24
14 Aug 202615.94%+0.52
31 Jul 202615.42%+0.48
15 Jul 202614.94%+0.11
30 Jun 202614.83%+1.61
15 Jun 202613.22%+0.28
29 May 202612.94%+0.77
15 May 202612.17%+0.35
30 Apr 202611.82%+1.90
15 Apr 20269.92%+0.52
31 Mar 20269.40%−0.97
13 Mar 202610.37%+0.32
27 Feb 202610.05%−0.15
13 Feb 202610.20%−0.69
30 Jan 202610.89%−0.77
15 Jan 202611.66%+1.36
31 Dec 202510.30%+2.58
15 Dec 20257.72%+1.08
28 Nov 20256.64%+1.12
14 Nov 20255.52%−0.65
31 Oct 20256.17%−0.69
15 Oct 20256.86%0.00
30 Sep 20256.86%+0.41
15 Sep 20256.45%−0.38
29 Aug 20256.83%+0.18
15 Aug 20256.65%+0.17
31 Jul 20256.48%−0.57
15 Jul 20257.05%+0.27
30 Jun 20256.78%−0.05
13 Jun 20256.83%+0.11
30 May 20256.72%−0.11
15 May 20256.83%+0.57
30 Apr 20256.26%+0.42
15 Apr 20255.84%+0.28
31 Mar 20255.56%−1.94
14 Mar 20257.50%+0.15
28 Feb 20257.35%+1.55
13 Dec 20245.80%−0.13
29 Nov 20245.93%+0.23
15 Nov 20245.70%−0.50
31 Oct 20246.20%−0.92
15 Oct 20247.12%+0.18
30 Sep 20246.94%+1.44
13 Sep 20245.50%−0.12
30 Aug 20245.62%−0.19
15 Aug 20245.81%+0.11
31 Jul 20245.70%+1.04
15 Jul 20244.66%+0.54
28 Jun 20244.12%+0.88
14 Jun 20243.24%−2.57
31 May 20245.81%−0.23
15 May 20246.04%+1.22
30 Apr 20244.82%+1.51
15 Apr 20243.31%+0.44
28 Mar 20242.87%−0.43
15 Mar 20243.30%+0.72
29 Feb 20242.58%−0.07
15 Feb 20242.65%−0.56
31 Jan 20243.21%+0.19
12 Jan 20243.02%−0.01
29 Dec 20233.03%+0.44
15 Dec 20232.59%−0.25
30 Nov 20232.84%−0.01
15 Nov 20232.85%+0.01
31 Oct 20232.84%−0.53
13 Oct 20233.37%+0.04
29 Sep 20233.33%+0.11
15 Sep 20233.22%+0.28
31 Aug 20232.94%−0.02
15 Aug 20232.96%−0.62
31 Jul 20233.58%+0.05
14 Jul 20233.53%+0.06
30 Jun 20233.47%+0.97
15 Jun 20232.50%−0.39
31 May 20232.89%+0.18
15 May 20232.71%−0.43
28 Apr 20233.14%+0.05
14 Apr 20233.09%+0.32
31 Mar 20232.77%+0.60
15 Mar 20232.17%−0.15
28 Feb 20232.32%+0.40
15 Feb 20231.92%+0.10
31 Jan 20231.82%−0.19
13 Jan 20232.01%−0.03
30 Dec 20222.04%−0.04
15 Dec 20222.08%−0.09
30 Nov 20222.17%−0.04
15 Nov 20222.21%−0.03
31 Oct 20222.24%−0.35
14 Oct 20222.59%−0.10
30 Sep 20222.69%+0.22
15 Sep 20222.47%+0.14
31 Aug 20222.33%−0.10
15 Aug 20222.43%−0.09
29 Jul 20222.52%−0.04
15 Jul 20222.56%−2.47
30 Jun 20225.03%−1.95
15 Jun 20226.98%+0.18
31 May 20226.80%−0.18
13 May 20226.98%+0.59
29 Apr 20226.39%+0.67
14 Apr 20225.72%−0.02
31 Mar 20225.74%−0.30
15 Mar 20226.04%+0.44
28 Feb 20225.60%−0.14
15 Feb 20225.74%+0.13
31 Jan 20225.61%+0.16
14 Jan 20225.45%+0.74
31 Dec 20214.71%+0.64
15 Dec 20214.07%−0.01
30 Nov 20214.08%−0.40
15 Nov 20214.48%+0.43
29 Oct 20214.05%+0.62
15 Oct 20213.43%+0.07
30 Sep 20213.36%−0.30
15 Sep 20213.66%−0.04
31 Aug 20213.70%−0.02
13 Aug 20213.72%−0.05
30 Jul 20213.77%−0.19
15 Jul 20213.96%−0.22
30 Jun 20214.18%+0.15
15 Jun 20214.03%−0.24
28 May 20214.27%+1.40
14 May 20212.87%0.00
30 Apr 20212.87%−0.50
15 Apr 20213.37%+0.10
31 Mar 20213.27%+1.57
15 Mar 20211.70%+1.39
31 Aug 20200.31%–

Newest first. Scroll inside the table for earlier dates, back to 31 Aug 2020.

Frequently asked questions

How shorted is Annexon, Inc. right now?
16.08% of Annexon, Inc.'s (ANNX) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 254th 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 ANNX'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 ANNX's days to cover?
11.68 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.