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HowShorted

PSFO short interest Cboe BZX

Pacer Swan SOS Flex (October). FINRA's reported shares short for this symbol, twice a month by settlement date, shown as the regulator publishes them. No percentage is shown: exchange-traded product: its share count floats with creation and redemption.

Shares short
1,215
vs previous settlement
+1,192 (+5182.6%)
days to cover
1.00
Settlement date
15 Sep 2026

Shares short over time

Aggregate net short position time series for PSFO shares short

Days to cover

FINRA's own figure: reported shares short divided by the security's average daily trading volume, published alongside each settlement.

Aggregate net short position time series for PSFO days to cover

Fails to deliver

The SEC's fails-to-deliver figure for PSFO: 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
21
30 Jun 2026
Highest in window
17,923
22 Oct 2025
Days with a balance
53
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Pacer Swan SOS Flex (October) 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 18K shares.

History

Every FINRA settlement we hold for PSFO, newest first.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 20261,215+1,1921.00
31 Aug 202623+151.00
14 Aug 20268−291.00
31 Jul 202637−1831.00
15 Jul 2026220−1,6801.00
30 Jun 20261,900+1,7251.44
15 Jun 2026175+1711.00
29 May 2026401.00
15 May 2026401.00
30 Apr 20264−4121.00
15 Apr 2026416+3701.00
31 Mar 202646−1,2451.00
13 Mar 20261,291−2,1531.00
27 Feb 20263,444−7,2101.57
13 Feb 202610,654+7,2324.13
30 Jan 20263,422−1,3561.00
15 Jan 20264,778−2,9309.54
31 Dec 20257,708−2,6931.00
15 Dec 202510,401+4,0501.45
28 Nov 20256,351−20,4611.00
14 Nov 202526,812−20,6141.00
31 Oct 202547,426+14,6483.78
15 Oct 202532,778+29,2401.00
30 Sep 20253,538+2,0741.29
15 Sep 20251,464+4916.72
29 Aug 2025973−1262.75
15 Aug 20251,099+1476.74
31 Jul 2025952−3406.48
15 Jul 20251,292−2132.25
30 Jun 20251,505+4821.00
13 Jun 20251,023+843.34
30 May 2025939−1,1742.57
15 May 20252,113+1,7483.09
30 Apr 2025365+3031.00
15 Apr 202562−22,0021.00
31 Mar 202522,064−4,67825.84
14 Mar 202526,742+25,2053.84
28 Feb 20251,537+6901.61
14 Feb 2025847+6004.01
31 Jan 2025247−1,0031.00
15 Jan 20251,250+8561.35
31 Dec 2024394−4451.00
13 Dec 2024839−2511.00
29 Nov 20241,090+91.00
15 Nov 20241,081+1801.00
31 Oct 2024901−4,8181.00
15 Oct 20245,719−12,1631.22
30 Sep 202417,882+1244.53
13 Sep 202417,758−2169.12
30 Aug 202417,760+2,52042.80
15 Aug 202415,240+11,4268.09
31 Jul 20243,814−13311.45
15 Jul 20243,947+65524.36
28 Jun 20243,292+2,2587.14
14 Jun 20241,034−1,4531.15
31 May 20242,487+1,48911.96
15 May 2024998−5,1841.00
30 Apr 20246,182+6,1496.78
15 Apr 202433−10,4431.00
29 Feb 202410,476+4,3046.16
15 Feb 20246,172+2,96910.64
31 Jan 20243,203−2,2923.22
12 Jan 20245,495+1,00810.61
29 Dec 20234,487−4,0273.77
15 Dec 20238,514−13,18414.31
30 Nov 202321,698+11,7437.65
15 Nov 20239,955−13,31310.04
31 Oct 202323,268+19,8211.97
13 Oct 20233,447−1,3851.00
29 Sep 20234,832+2,0444.42
15 Sep 20232,788+1968.77
31 Aug 20232,592+2,4813.58
15 Aug 2023111+1051.00
14 Jul 2023601.00
30 Jun 20236−4,7981.00
15 Jun 20234,804−4291.54
15 May 20235,233−9707.45
28 Apr 20236,203+6,1698.89
14 Apr 202334−2701.00
31 Mar 2023304−5,7271.00
15 Mar 20236,031+3,4321.44
28 Feb 20232,599+6091.00
15 Feb 20231,990−10,9361.36
13 Jan 202312,926+12,04125.60
30 Dec 2022885−23,6561.00
30 Nov 202224,541+13,48910.04
15 Nov 202211,052+7,0652.29
31 Oct 20223,987−2,9081.32
14 Oct 20226,895+4,5571.00
30 Sep 20222,338+4554.31
15 Sep 20221,883+571.83
31 Aug 20221,826+1,5431.97
15 Aug 2022283−16,8281.09
29 Jul 202217,111−42,5018.27
15 Jul 202259,612+10,30549.43
30 Jun 202249,307+34,7528.66
15 Jun 202214,555−14,51425.94
31 May 202229,069+15,32112.27
13 May 202213,748+9,0031.29
29 Apr 20224,745−1,2873.11
14 Apr 20226,032+1,8162.38
31 Mar 20224,216+3,1513.38
15 Mar 20221,065088.75
28 Feb 20221,065−961.26
15 Feb 20221,161−1,8183.26
31 Jan 20222,979+1,81815.36
14 Jan 20221,161044.65
31 Dec 20211,161−301.00
15 Dec 20211,191−1,0302.11
30 Nov 20212,221−4,7621.00
15 Nov 20216,983+2,0731.00
29 Oct 20214,910+2,3581.00
15 Oct 20212,552–1.00

Scroll inside the table for earlier settlements, back to 15 Oct 2021.

Questions

Frequently asked questions

What is PSFO's short interest?
1,215 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, up 1,192 from the previous settlement.
Why is there no percentage for PSFO?
Because no defensible share count exists to divide by: exchange-traded product: its share count floats with creation and redemption. An exchange-traded product's share count changes every day as units are created and redeemed, so no filing gives a stable count to divide by. FINRA's shares-short figure is exact; a percentage of it would not be.
What is PSFO's days to cover?
1.00 days for settlement date 15 Sep 2026: FINRA's own short interest ratio, the reported shares short divided by average daily trading volume, published in the same file and shown verbatim. We hold no volume data ourselves.
Is this the short float?
No. This page shows FINRA's share count only. Short float divides that count by the public float, and short interest as we publish it elsewhere divides it by shares outstanding from SEC filings. Neither denominator is available for this line, so neither ratio is shown.
How often does this update?
FINRA member firms report short positions as of the 15th and the last business day of each month, and FINRA publishes the consolidated figures about nine business days later. We ingest each file the day it appears and re-read recent settlements for revisions.

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