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HowShorted

How shorted is Portillo's Inc.? PTLO

#348most shorted US stockof 3,805 ranked stocks, more shorted than 90%

13.84%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.90
5 reports (~10 weeks)
+0.35
days to cover
8.21
Aggregate net short position time series for Portillo's 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 Portillo's 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
5 Aug 202614.08% 31 Jul 202614.26% 14 Aug 2026+0.18
5 May 202611.93% 30 Apr 202613.34% 15 May 2026+1.41
24 Feb 202615.69% 13 Feb 202614.86% 27 Feb 2026−0.83
4 Nov 202516.52% 31 Oct 202518.90% 14 Nov 2025+2.38
5 Aug 202512.66% 31 Jul 202510.98% 15 Aug 2025−1.68
6 May 202513.92% 30 Apr 202513.60% 15 May 2025−0.32
25 Feb 202511.67% 14 Feb 202512.31% 28 Feb 2025+0.64
5 Nov 202411.07% 31 Oct 202410.96% 15 Nov 2024−0.11

Fails to deliver

The SEC's fails-to-deliver figure for PTLO: 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
39,819
10 Sep 2026
Highest in window
195,180
24 Sep 2025
Days with a balance
89
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Portillo's 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 195K shares.

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Sector: Consumer services

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202613.84%+0.90
31 Aug 202612.94%−1.32
14 Aug 202614.26%+0.18
31 Jul 202614.08%+0.73
15 Jul 202613.35%−0.14
30 Jun 202613.49%−1.47
15 Jun 202614.96%+1.87
29 May 202613.09%−0.25
15 May 202613.34%+1.41
30 Apr 202611.93%−0.94
15 Apr 202612.87%−0.74
31 Mar 202613.61%−0.48
13 Mar 202614.09%−0.77
27 Feb 202614.86%−0.83
13 Feb 202615.69%+0.14
30 Jan 202615.55%−1.79
15 Jan 202617.34%−1.44
31 Dec 202518.78%+0.68
15 Dec 202518.10%−0.52
28 Nov 202518.62%−0.28
14 Nov 202518.90%+2.38
31 Oct 202516.52%+1.37
15 Oct 202515.15%+0.37
30 Sep 202514.78%+0.14
15 Sep 202514.64%+0.04
29 Aug 202514.60%+3.62
15 Aug 202510.98%−1.68
31 Jul 202512.66%+0.07
15 Jul 202512.59%+0.46
30 Jun 202512.13%−1.10
13 Jun 202513.23%+1.20
30 May 202512.03%−1.57
15 May 202513.60%−0.32
30 Apr 202513.92%−0.44
15 Apr 202514.36%−0.47
31 Mar 202514.83%+1.81
14 Mar 202513.02%+0.71
28 Feb 202512.31%+0.64
14 Feb 202511.67%+0.24
31 Jan 202511.43%+0.91
15 Jan 202510.52%−0.42
31 Dec 202410.94%+1.57
13 Dec 20249.37%−0.01
29 Nov 20249.38%−1.58
15 Nov 202410.96%−0.11
31 Oct 202411.07%−2.48
15 Oct 202413.55%−0.10
30 Sep 202413.65%−1.27
13 Sep 202414.92%−0.73
30 Aug 202415.65%−0.09
15 Aug 202415.74%+1.77
31 Jul 202413.97%+1.21
15 Jul 202412.76%+0.57
28 Jun 202412.19%+2.38
14 Jun 20249.81%+1.23
31 May 20248.58%−0.08
15 May 20248.66%−0.69
30 Apr 20249.35%−0.49
15 Apr 20249.84%+2.54
28 Mar 20247.30%−0.36
15 Mar 20247.66%+0.15
29 Feb 20247.51%+0.59
15 Feb 20246.92%−0.18
31 Jan 20247.10%+0.50
12 Jan 20246.60%−0.15
29 Dec 20236.75%−0.37
15 Dec 20237.12%−0.37
30 Nov 20237.49%−0.38
15 Nov 20237.87%−0.56
31 Oct 20238.43%+0.24
13 Oct 20238.19%+1.33
29 Sep 20236.86%+0.89
15 Sep 20235.97%+0.68
31 Aug 20235.29%−1.85
15 Aug 20237.14%−1.18
31 Jul 20238.32%−0.71
14 Jul 20239.03%+0.31
30 Jun 20238.72%+0.65
15 Jun 20238.07%−0.48
31 May 20238.55%−0.36
15 May 20238.91%+0.02
28 Apr 20238.89%−2.51
14 Apr 202311.40%−0.48
31 Mar 202311.88%−0.32
15 Mar 202312.20%−0.17
28 Feb 202312.37%−0.29
15 Feb 202312.66%+0.64
31 Jan 202312.02%+1.17
13 Jan 202310.85%+0.79
30 Dec 202210.06%+0.40
15 Dec 20229.66%−0.93
30 Nov 202210.59%−3.48
15 Nov 202214.07%+0.88
31 Oct 202213.19%−1.41
14 Oct 202214.60%+2.43
30 Sep 202212.17%+2.18
15 Sep 20229.99%+0.12
31 Aug 20229.87%−4.19
15 Aug 202214.06%−0.30
29 Jul 202214.36%+0.84
15 Jul 202213.52%−0.89
30 Jun 202214.41%+0.47
15 Jun 202213.94%+1.62
31 May 202212.32%−1.09
13 May 202213.41%−1.49
29 Apr 202214.90%+11.41
30 Nov 20213.49%+1.29
15 Nov 20212.20%–

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

Frequently asked questions

How shorted is Portillo's Inc. right now?
13.84% of Portillo's Inc.'s (PTLO) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 348th 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 PTLO'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 PTLO's days to cover?
8.21 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.