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HowShorted

How shorted is CarParts.com, Inc.? PRTS

#1,484most shorted US stockof 3,805 ranked stocks, more shorted than 60%

5.62%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.55
5 reports (~10 weeks)
+2.66
days to cover
3.40
Aggregate net short position time series for CarParts.com, 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 CarParts.com, 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
6 Aug 20263.75% 31 Jul 20264.06% 14 Aug 2026+0.31
7 May 20262.96% 30 Apr 20263.35% 15 May 2026+0.39
5 Mar 20261.90% 27 Feb 20261.34% 13 Mar 2026−0.56
10 Nov 20253.48% 31 Oct 20253.58% 14 Nov 2025+0.10
12 Aug 20251.05% 31 Jul 20251.20% 15 Aug 2025+0.15
13 May 20250.94% 30 Apr 20250.83% 15 May 2025−0.11
25 Mar 20250.98% 14 Mar 20251.46% 31 Mar 2025+0.48
29 Oct 20241.60% 15 Oct 20241.94% 31 Oct 2024+0.34

Fails to deliver

The SEC's fails-to-deliver figure for PRTS: 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
4,994
11 Sep 2026
Highest in window
89,612
29 Sep 2025
Days with a balance
71
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for CarParts.com, 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 90K shares.

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Sector: Consumer retail · By year: 2018 · 2019 · 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 20265.62%+0.55
31 Aug 20265.07%+1.01
14 Aug 20264.06%+0.31
31 Jul 20263.75%+0.40
15 May 20263.35%+0.39
30 Apr 20262.96%+0.85
15 Apr 20262.11%+0.03
31 Mar 20262.08%+0.74
13 Mar 20261.34%−0.56
27 Feb 20261.90%+0.26
13 Feb 20261.64%−0.01
30 Jan 20261.65%+0.30
15 Jan 20261.35%−0.96
31 Dec 20252.31%−0.62
15 Dec 20252.93%+0.22
28 Nov 20252.71%−0.87
14 Nov 20253.58%+0.10
31 Oct 20253.48%+0.55
15 Oct 20252.93%+1.61
30 Sep 20251.32%+0.30
15 Sep 20251.02%−0.21
29 Aug 20251.23%+0.03
15 Aug 20251.20%+0.15
31 Jul 20251.05%+0.09
15 Jul 20250.96%+0.12
30 Jun 20250.84%+0.15
13 Jun 20250.69%+0.03
30 May 20250.66%−0.17
15 May 20250.83%−0.11
30 Apr 20250.94%−0.80
15 Apr 20251.74%+0.28
31 Mar 20251.46%+0.48
14 Mar 20250.98%−0.19
28 Feb 20251.17%+0.03
14 Feb 20251.14%+0.01
31 Jan 20251.13%−0.02
15 Jan 20251.15%+0.20
31 Dec 20240.95%+0.06
13 Dec 20240.89%−0.08
29 Nov 20240.97%−0.36
15 Nov 20241.33%−0.61
31 Oct 20241.94%+0.34
15 Oct 20241.60%−0.07
30 Sep 20241.67%+0.06
13 Sep 20241.61%+0.33
30 Aug 20241.28%+0.24
15 Aug 20241.04%−0.27
31 Jul 20241.31%−3.05
28 Jun 20244.36%−0.52
14 Jun 20244.88%−0.11
31 May 20244.99%−0.75
15 May 20245.74%−1.09
30 Apr 20246.83%+2.03
15 Apr 20244.80%+0.76
28 Mar 20244.04%+1.37
15 Mar 20242.67%+0.17
29 Feb 20242.50%+0.10
15 Feb 20242.40%+0.37
31 Jan 20242.03%+0.35
12 Jan 20241.68%+0.19
29 Dec 20231.49%−0.17
15 Dec 20231.66%−0.10
30 Nov 20231.76%−0.02
15 Nov 20231.78%+0.17
31 Oct 20231.61%−0.15
13 Oct 20231.76%−0.24
29 Sep 20232.00%+0.03
15 Sep 20231.97%−0.33
31 Aug 20232.30%+0.18
15 Aug 20232.12%−0.01
31 Jul 20232.13%+0.19
14 Jul 20231.94%−0.19
30 Jun 20232.13%−0.35
15 Jun 20232.48%−0.30
31 May 20232.78%+0.07
15 May 20232.71%−0.55
28 Apr 20233.26%−1.19
14 Apr 20234.45%−0.40
31 Mar 20234.85%−0.94
15 Mar 20235.79%−0.06
28 Feb 20235.85%+0.12
15 Feb 20235.73%−0.01
31 Jan 20235.74%−0.92
13 Jan 20236.66%−1.20
30 Dec 20227.86%−0.98
15 Dec 20228.84%−0.44
30 Nov 20229.28%+0.36
15 Nov 20228.92%−2.51
31 Oct 202211.43%+0.21
14 Oct 202211.22%−0.15
30 Sep 202211.37%+1.24
15 Sep 202210.13%+0.51
31 Aug 20229.62%+0.93
15 Aug 20228.69%−1.51
29 Jul 202210.20%−0.57
15 Jul 202210.77%−0.60
30 Jun 202211.37%−2.75
15 Jun 202214.12%+0.85
31 May 202213.27%−0.95
13 May 202214.22%−1.59
29 Apr 202215.81%−1.32
14 Apr 202217.13%−0.62
31 Mar 202217.75%+0.01
15 Mar 202217.74%+2.05
28 Feb 202215.69%+0.89
15 Feb 202214.80%−0.62
31 Jan 202215.42%+1.19
14 Jan 202214.23%+0.36
31 Dec 202113.87%−0.82
15 Dec 202114.69%−0.53
30 Nov 202115.22%−0.53
15 Nov 202115.75%−1.78
29 Oct 202117.53%−0.30
15 Oct 202117.83%+0.61
30 Sep 202117.22%−0.25
15 Sep 202117.47%−0.10
31 Aug 202117.57%+0.50
13 Aug 202117.07%−1.05
30 Jul 202118.12%−0.43
15 Jul 202118.55%+0.35
30 Jun 202118.20%+0.64
15 Jun 202117.56%−0.68
28 May 202118.24%−0.77
14 May 202119.01%+1.35
30 Apr 202117.66%−0.58
15 Apr 202118.24%−0.43
31 Mar 202118.67%+0.19
15 Mar 202118.48%+0.48
26 Feb 202118.00%+1.76
12 Feb 202116.24%+1.14
29 Jan 202115.10%−13.94
15 Jan 202129.04%−2.08
31 Dec 202031.12%+4.73
15 Dec 202026.39%+3.32
30 Nov 202023.07%+0.18
13 Nov 202022.89%+18.17
31 Aug 20204.72%+1.51
14 Aug 20203.21%+3.04
15 May 20200.17%+0.07
30 Apr 20200.10%−0.05
31 Mar 20200.15%−0.01
13 Mar 20200.16%−0.71
28 Feb 20200.87%+0.08
14 Feb 20200.79%−0.29
31 Oct 20191.08%+0.07
15 Oct 20191.01%+0.05
30 Sep 20190.96%−0.08
13 Sep 20191.04%−0.04
30 Aug 20191.08%−0.07
15 Aug 20191.15%−0.06
31 Jul 20191.21%−0.04
15 Jul 20191.25%−0.09
28 Jun 20191.34%+0.01
14 Jun 20191.33%−0.20
31 May 20191.53%+0.06
15 May 20191.47%+0.14
30 Apr 20191.33%−0.16
15 Apr 20191.49%−0.04
29 Mar 20191.53%−0.09
15 Mar 20191.62%+0.25
28 Feb 20191.37%−0.16
15 Feb 20191.53%−0.12
31 Jan 20191.65%−0.03
15 Jan 20191.68%+0.01
31 Dec 20181.67%+0.08
14 Dec 20181.59%+0.01
30 Nov 20181.58%+0.25
15 Nov 20181.33%−0.30
31 Oct 20181.63%+0.59
15 Oct 20181.04%+0.11
28 Sep 20180.93%−0.13
14 Sep 20181.06%+0.02
31 Aug 20181.04%+0.17
15 Aug 20180.87%+0.24
31 Jul 20180.63%−0.15
13 Jul 20180.78%−0.04
29 Jun 20180.82%+0.22
15 Jun 20180.60%+0.09
31 May 20180.51%+0.24
15 May 20180.27%+0.10
30 Apr 20180.17%−0.03
13 Apr 20180.20%+0.07
29 Mar 20180.13%+0.01
15 Mar 20180.12%−0.10
28 Feb 20180.22%−0.08
15 Feb 20180.30%−0.05
31 Jan 20180.35%+0.10
12 Jan 20180.25%+0.03
29 Dec 20170.22%–

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

Frequently asked questions

How shorted is CarParts.com, Inc. right now?
5.62% of CarParts.com, Inc.'s (PRTS) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 1,484th 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 PRTS'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 PRTS's days to cover?
3.40 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.