Skip to content
HowShorted

How shorted is AnaptysBio, Inc.? ANAB

#159most shorted US stockof 3,805 ranked stocks, more shorted than 95%

18.68%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.08
5 reports (~10 weeks)
+0.99
days to cover
10.25
Aggregate net short position time series for AnaptysBio, 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 AnaptysBio, 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 May 202615.33% 30 Apr 202616.48% 15 May 2026+1.15
3 Mar 202619.38% 27 Feb 202617.31% 13 Mar 2026−2.07
9 Jan 202618.57% 31 Dec 202520.11% 15 Jan 2026+1.54
4 Nov 202524.74% 31 Oct 202521.42% 14 Nov 2025−3.32
6 Aug 202532.55% 31 Jul 202534.27% 15 Aug 2025+1.72
5 May 202530.50% 30 Apr 202530.06% 15 May 2025−0.44
27 Feb 202530.59% 14 Feb 202529.68% 28 Feb 2025−0.91
5 Nov 202420.29% 31 Oct 202422.07% 15 Nov 2024+1.78

Fails to deliver

The SEC's fails-to-deliver figure for ANAB: 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
4 Sep 2026
Highest in window
57,046
12 Nov 2025
Days with a balance
63
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for AnaptysBio, 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 57K 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 · By year: 2019 · 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202618.68%+0.08
31 Aug 202618.60%+0.33
14 Aug 202618.27%−0.29
31 Jul 202618.56%+1.38
15 Jul 202617.18%−0.51
30 Jun 202617.69%+1.77
15 Jun 202615.92%−0.65
29 May 202616.57%+0.09
15 May 202616.48%+1.15
30 Apr 202615.33%+0.50
15 Apr 202614.83%−2.55
31 Mar 202617.38%+0.07
13 Mar 202617.31%−2.07
27 Feb 202619.38%−0.97
13 Feb 202620.35%−0.11
30 Jan 202620.46%+0.35
15 Jan 202620.11%+1.54
31 Dec 202518.57%−1.81
15 Dec 202520.38%−0.80
28 Nov 202521.18%−0.24
14 Nov 202521.42%−3.32
31 Oct 202524.74%−0.64
15 Oct 202525.38%−0.20
30 Sep 202525.58%−8.03
15 Sep 202533.61%−1.03
29 Aug 202534.64%+0.37
15 Aug 202534.27%+1.72
31 Jul 202532.55%+0.62
15 Jul 202531.93%+0.06
30 Jun 202531.87%+0.71
13 Jun 202531.16%−0.18
30 May 202531.34%+1.28
15 May 202530.06%−0.44
30 Apr 202530.50%−4.88
15 Apr 202535.38%+0.10
31 Mar 202535.28%+3.07
14 Mar 202532.21%+2.53
28 Feb 202529.68%−0.91
14 Feb 202530.59%+10.76
31 Jan 202519.83%−1.85
15 Jan 202521.68%−2.40
31 Dec 202424.08%+1.12
13 Dec 202422.96%−0.37
29 Nov 202423.33%+1.26
15 Nov 202422.07%+1.78
31 Oct 202420.29%−1.49
15 Oct 202421.78%+0.08
30 Sep 202421.70%+0.45
13 Sep 202421.25%+0.73
30 Aug 202420.52%+0.08
15 Aug 202420.44%−0.16
31 Jul 202420.60%+1.26
15 Jul 202419.34%+1.20
28 Jun 202418.14%+0.88
14 Jun 202417.26%+0.47
31 May 202416.79%+0.20
15 May 202416.59%+0.24
30 Apr 202416.35%+0.40
15 Apr 202415.95%−0.13
28 Mar 202416.08%+0.63
15 Mar 202415.45%−0.36
29 Feb 202415.81%−1.14
15 Feb 202416.95%−2.30
31 Jan 202419.25%+2.24
12 Jan 202417.01%+0.20
29 Dec 202316.81%−0.13
15 Dec 202316.94%−1.76
30 Nov 202318.70%+0.10
15 Nov 202318.60%−0.42
31 Oct 202319.02%+0.34
13 Oct 202318.68%+0.82
29 Sep 202317.86%+0.20
15 Sep 202317.66%+0.19
31 Aug 202317.47%−0.32
15 Aug 202317.79%+1.09
31 Jul 202316.70%+0.24
14 Jul 202316.46%−0.10
30 Jun 202316.56%−0.29
15 Jun 202316.85%−0.94
31 May 202317.79%+0.44
15 May 202317.35%+0.24
28 Apr 202317.11%+0.06
14 Apr 202317.05%+0.19
31 Mar 202316.86%+0.42
15 Mar 202316.44%+1.13
28 Feb 202315.31%+0.47
15 Feb 202314.84%+0.08
31 Jan 202314.76%−2.63
13 Jan 202317.39%−1.55
30 Dec 202218.94%−0.27
15 Dec 202219.21%+0.15
30 Nov 202219.06%−0.42
15 Nov 202219.48%−0.44
31 Oct 202219.92%+0.47
14 Oct 202219.45%−0.29
30 Sep 202219.74%+0.58
15 Sep 202219.16%+0.81
31 Aug 202218.35%+2.78
15 Aug 202215.57%−0.66
29 Jul 202216.23%+1.74
15 Jul 202214.49%+0.47
30 Jun 202214.02%+0.47
15 Jun 202213.55%+1.60
31 May 202211.95%−1.27
13 May 202213.22%+2.79
29 Apr 202210.43%+1.87
14 Apr 20228.56%−0.26
31 Mar 20228.82%−1.27
15 Mar 202210.09%+0.86
28 Feb 20229.23%+0.74
15 Feb 20228.49%+0.20
31 Jan 20228.29%+0.22
14 Jan 20228.07%+0.26
31 Dec 20217.81%−0.53
15 Dec 20218.34%0.00
30 Nov 20218.34%−0.13
15 Nov 20218.47%−0.37
29 Oct 20218.84%−0.17
15 Oct 20219.01%−0.33
30 Sep 20219.34%−0.81
15 Sep 202110.15%−0.44
31 Aug 202110.59%+0.11
13 Aug 202110.48%−0.15
30 Jul 202110.63%−0.80
15 Jul 202111.43%+0.09
30 Jun 202111.34%−2.53
15 Jun 202113.87%+0.07
28 May 202113.80%−0.69
14 May 202114.49%+0.10
30 Apr 202114.39%−1.35
15 Apr 202115.74%+0.43
31 Mar 202115.31%+0.93
15 Mar 202114.38%+0.46
26 Feb 202113.92%+0.25
12 Feb 202113.67%+0.60
29 Jan 202113.07%+0.15
15 Jan 202112.92%+0.03
31 Dec 202012.89%−0.44
15 Dec 202013.33%−0.41
30 Nov 202013.74%−0.79
13 Nov 202014.53%+0.09
30 Oct 202014.44%−1.87
15 Oct 202016.31%+0.56
30 Sep 202015.75%−1.16
15 Sep 202016.91%+0.07
31 Aug 202016.84%−0.64
14 Aug 202017.48%−0.38
31 Jul 202017.86%−0.64
15 Jul 202018.50%−0.29
30 Jun 202018.79%−2.56
15 Jun 202021.35%−0.48
29 May 202021.83%−1.06
15 May 202022.89%+0.47
30 Apr 202022.42%−0.50
15 Apr 202022.92%+0.11
31 Mar 202022.81%+0.94
13 Mar 202021.87%+1.19
28 Feb 202020.68%+1.35
14 Feb 202019.33%+0.78
31 Jan 202018.55%+2.27
15 Jan 202016.28%+1.66
31 Dec 201914.62%+1.88
13 Dec 201912.74%+0.76
29 Nov 201911.98%+0.24
15 Nov 201911.74%−0.16
31 Oct 201911.90%+0.31
15 Oct 201911.59%–

Newest first. Scroll inside the table for earlier dates, back to 15 Oct 2019.

Frequently asked questions

How shorted is AnaptysBio, Inc. right now?
18.68% of AnaptysBio, Inc.'s (ANAB) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 159th 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 ANAB'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 ANAB's days to cover?
10.25 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.