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HowShorted

How shorted is 4D Molecular Therapeutics, Inc.? FDMT

#229most shorted US stockof 3,805 ranked stocks, more shorted than 93%

16.64%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
−0.08
5 reports (~10 weeks)
−2.58
days to cover
18.55
Aggregate net short position time series for 4D Molecular Therapeutics, 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 4D Molecular Therapeutics, 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
13 Aug 202617.39% 31 Jul 202617.03% 14 Aug 2026−0.36
7 May 202617.64% 30 Apr 202617.46% 15 May 2026−0.18
18 Mar 202615.37% 13 Mar 202615.98% 31 Mar 2026+0.61
7 Jan 202612.83% 31 Dec 202514.01% 15 Jan 2026+1.18
10 Nov 20257.62% 31 Oct 20257.67% 14 Nov 2025+0.05
6 Nov 20257.62% 31 Oct 20257.67% 14 Nov 2025+0.05
11 Aug 20256.65% 31 Jul 20257.39% 15 Aug 2025+0.74
8 May 20259.05% 30 Apr 20258.38% 15 May 2025−0.67

Fails to deliver

The SEC's fails-to-deliver figure for FDMT: 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
6
10 Sep 2026
Highest in window
344,988
1 Jul 2026
Days with a balance
69
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for 4D Molecular Therapeutics, 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 345K shares.

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Sector: Healthcare · By year: 2021 · 2022 · 2023 · 2024 · 2025 · 2026

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202616.64%−0.08
31 Aug 202616.72%−0.31
14 Aug 202617.03%−0.36
31 Jul 202617.39%+0.97
15 Jul 202616.42%−2.80
30 Jun 202619.22%+0.54
15 Jun 202618.68%+1.06
29 May 202617.62%+0.16
15 May 202617.46%−0.18
30 Apr 202617.64%+0.70
15 Apr 202616.94%+0.96
31 Mar 202615.98%+0.61
13 Mar 202615.37%+0.39
27 Feb 202614.98%+0.61
13 Feb 202614.37%+0.65
30 Jan 202613.72%−0.29
15 Jan 202614.01%+1.18
31 Dec 202512.83%+5.40
15 Dec 20257.43%−0.03
28 Nov 20257.46%−0.21
14 Nov 20257.67%+0.05
31 Oct 20257.62%+0.10
15 Oct 20257.52%−0.48
30 Sep 20258.00%−0.36
15 Sep 20258.36%+0.70
29 Aug 20257.66%+0.27
15 Aug 20257.39%+0.74
31 Jul 20256.65%+0.15
15 Jul 20256.50%−0.47
30 Jun 20256.97%−0.52
13 Jun 20257.49%−0.32
30 May 20257.81%−0.57
15 May 20258.38%−0.67
30 Apr 20259.05%−0.29
15 Apr 20259.34%+0.26
31 Mar 20259.08%+0.05
14 Mar 20259.03%−0.38
28 Feb 20259.41%−6.31
15 Nov 202415.72%−0.72
31 Oct 202416.44%−2.63
15 Oct 202419.07%−2.88
30 Sep 202421.95%+2.83
13 Sep 202419.12%−0.72
30 Aug 202419.84%−0.16
15 Aug 202420.00%+0.85
31 Jul 202419.15%−1.63
15 Jul 202420.78%+0.91
28 Jun 202419.87%+0.38
14 Jun 202419.49%+0.25
31 May 202419.24%−0.14
15 May 202419.38%+0.05
30 Apr 202419.33%−0.43
15 Apr 202419.76%+1.04
28 Mar 202418.72%+1.64
15 Mar 202417.08%+0.32
29 Feb 202416.76%+0.24
15 Feb 202416.52%+7.55
31 Jan 20248.97%+2.23
12 Jan 20246.74%−0.79
29 Dec 20237.53%−1.67
15 Dec 20239.20%+0.78
30 Nov 20238.42%−0.39
15 Nov 20238.81%+0.46
31 Oct 20238.35%−1.40
13 Oct 20239.75%+0.41
29 Sep 20239.34%+0.57
15 Sep 20238.77%+0.29
31 Aug 20238.48%0.00
15 Aug 20238.48%−0.80
31 Jul 20239.28%−0.06
14 Jul 20239.34%−1.21
30 Jun 202310.55%+0.26
15 Jun 202310.29%+0.94
31 May 20239.35%+0.42
15 May 20238.93%+0.40
28 Apr 20238.53%−0.99
14 Apr 20239.52%+0.15
31 Mar 20239.37%+1.51
15 Mar 20237.86%+1.34
28 Feb 20236.52%−0.37
15 Feb 20236.89%+0.20
31 Jan 20236.69%−0.27
13 Jan 20236.96%+0.56
30 Dec 20226.40%+0.68
15 Dec 20225.72%−1.36
30 Nov 20227.08%−1.25
15 Nov 20228.33%−0.62
31 Oct 20228.95%−0.15
14 Oct 20229.10%+4.24
30 Sep 20224.86%+0.37
15 Sep 20224.49%−0.14
31 Aug 20224.63%−0.19
15 Aug 20224.82%−0.20
29 Jul 20225.02%−0.27
15 Jul 20225.29%−0.18
30 Jun 20225.47%−1.13
15 Jun 20226.60%+0.45
31 May 20226.15%+0.30
13 May 20225.85%−0.24
29 Apr 20226.09%+0.19
14 Apr 20225.90%+0.31
31 Mar 20225.59%+0.06
15 Mar 20225.53%−0.03
28 Feb 20225.56%+0.39
15 Feb 20225.17%+0.30
31 Jan 20224.87%+0.47
14 Jan 20224.40%+0.05
31 Dec 20214.35%+1.70
15 Dec 20212.65%−0.09
30 Nov 20212.74%−0.94
15 Nov 20213.68%−2.26
29 Oct 20215.94%−0.08
15 Oct 20216.02%+0.08
30 Sep 20215.94%+1.37
15 Sep 20214.57%+0.70
31 Aug 20213.87%+0.09
13 Aug 20213.78%+0.04
30 Jul 20213.74%+0.01
15 Jul 20213.73%+0.18
30 Jun 20213.55%−0.22
15 Jun 20213.77%+0.46
28 May 20213.31%+0.25
14 May 20213.06%−0.04
30 Apr 20213.10%+0.55
15 Apr 20212.55%−0.26
31 Mar 20212.81%+1.08
15 Mar 20211.73%–

Newest first. Scroll inside the table for earlier dates, back to 15 Mar 2021.

Frequently asked questions

How shorted is 4D Molecular Therapeutics, Inc. right now?
16.64% of 4D Molecular Therapeutics, Inc.'s (FDMT) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 229th 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 FDMT'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 FDMT's days to cover?
18.55 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.