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HowShorted

PFIX short interest NYSE Arca

Simplify Interest Rate Hedge E. 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
54,396
vs previous settlement
โˆ’14,578 (-21.1%)
days to cover
1.00
Settlement date
15 Sep 2026

Shares short over time

Aggregate net short position time series for PFIX 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 PFIX days to cover

Fails to deliver

The SEC's fails-to-deliver figure for PFIX: 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
1,558
11 Sep 2026
Highest in window
380,347
20 Mar 2026
Days with a balance
137
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Simplify Interest Rate Hedge E 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 380K shares.

History

Every FINRA settlement we hold for PFIX, newest first. สณ marks a figure FINRA itself flagged as revised.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 202654,396โˆ’14,5781.00
31 Aug 202668,974โˆ’123,3971.00
14 Aug 2026192,371+45,7171.00
31 Jul 2026146,654+6,4151.27
15 Jul 2026140,239โˆ’26,5391.00
30 Jun 2026166,778+7,5941.00
15 Jun 2026159,184+23,1661.00
29 May 2026136,018+88,9341.00
15 May 202647,084โˆ’3551.00
30 Apr 202647,439+33,3341.00
15 Apr 202614,105โˆ’369,5991.00
31 Mar 2026383,704+114,9161.00
13 Mar 2026268,788+233,8101.00
27 Feb 202634,978โˆ’11,5251.00
13 Feb 202646,503โˆ’6,6261.00
30 Jan 202653,129โˆ’70,1651.00
15 Jan 2026123,294+86,7731.00
31 Dec 202536,521โˆ’71,4441.00
15 Dec 2025107,965+77,8621.00
28 Nov 202530,103โˆ’16,6521.00
14 Nov 202546,755+20,0801.00
31 Oct 202526,675โˆ’3,6381.00
15 Oct 202530,313โˆ’2,8391.00
30 Sep 202533,152โˆ’9,3381.00
15 Sep 202542,490+10,5201.00
29 Aug 202531,970+21,8061.00
15 Aug 202510,164โˆ’3,4551.00
31 Jul 202513,619โˆ’1,1091.00
15 Jul 202514,728+3,3741.00
30 Jun 202511,354โˆ’10,4441.00
13 Jun 202521,798+8,2641.00
30 May 202513,534โˆ’101,0001.00
15 May 2025114,534โˆ’17,6021.00
30 Apr 2025132,136+88,9911.00
15 Apr 202543,145+33,0481.00
31 Mar 202510,097โˆ’6,8271.00
14 Mar 202516,924+5,0411.00
28 Feb 202511,883+2,9721.00
14 Feb 20258,911โˆ’3451.00
31 Jan 20259,256โˆ’11,2371.00
15 Jan 202520,493+5241.00
31 Dec 202419,969โˆ’4,0251.00
13 Dec 202423,994โˆ’315,6311.00
29 Nov 2024339,625+208,5403.77
15 Nov 2024131,085+71,0351.22
31 Oct 202460,050โˆ’71,6271.14
15 Oct 2024131,677+108,3711.05
30 Sep 202423,306+15,0911.00
13 Sep 20248,215โˆ’7721.00
30 Aug 20248,987โˆ’1,3691.00
15 Aug 202410,356+4,4751.00
31 Jul 20245,881โˆ’4,8081.00
15 Jul 202410,689+4,0491.00
28 Jun 20246,640โˆ’3631.00
14 Jun 20247,003+1,7691.00
31 May 20245,234+1,0051.00
15 May 20244,229โˆ’10,0791.00
30 Apr 202414,308โˆ’4,0911.00
15 Apr 202418,399โˆ’33,7401.00
28 Mar 202452,139+37,1451.00
15 Mar 202414,994โˆ’39,8451.00
29 Feb 202454,839โˆ’111,9651.00
15 Feb 2024166,804+149,6171.00
31 Jan 202417,187โˆ’19,0171.00
12 Jan 202436,204+21,7191.00
29 Dec 202314,485+2,5171.00
15 Dec 202311,968โˆ’4,6751.00
30 Nov 202316,643โˆ’1,4071.00
15 Nov 202318,050สณโˆ’324,5111.00
31 Oct 2023342,561+71,0682.59
13 Oct 2023271,493+123,2281.40
29 Sep 2023148,265โˆ’233,3051.00
15 Sep 2023381,570+46,7623.03
31 Aug 2023334,808โˆ’261,0901.59
15 Aug 2023595,898+274,2843.05
31 Jul 2023321,614โˆ’353,5002.34
14 Jul 2023675,114+30,9996.45
30 Jun 2023644,115+37,0565.66
15 Jun 2023607,059+361,2015.94
31 May 2023245,858โˆ’242,8663.78
15 May 2023488,724+207,9148.77
28 Apr 2023280,810โˆ’184,2193.35
14 Apr 2023465,029โˆ’446,6326.81
31 Mar 2023911,661+884,2827.80
15 Mar 202327,379โˆ’335,0781.00
28 Feb 2023362,457+145,3492.74
15 Feb 2023217,108โˆ’69,2761.24
31 Jan 2023286,384+273,4152.33
13 Jan 202312,969โˆ’1,547,2321.00
30 Dec 20221,560,201+995,41111.20
15 Dec 2022564,790+541,3372.79
30 Nov 202223,453โˆ’179,1621.00
15 Nov 2022202,615+167,7021.00
31 Oct 202234,913โˆ’89,8681.00
14 Oct 2022124,781+115,1571.00
30 Sep 20229,624โˆ’251,2821.00
15 Sep 2022260,906+246,1181.45
31 Aug 202214,788โˆ’85,4461.00
15 Aug 2022100,234+89,9931.00
29 Jul 202210,241โˆ’101,5301.00
15 Jul 2022111,771+100,9961.00
30 Jun 202210,775+5,4191.00
15 Jun 20225,356โˆ’7571.00
31 May 20226,113โˆ’4,7421.00
13 May 202210,855โˆ’8,4411.00
29 Apr 202219,296โˆ’19,2201.00
14 Apr 202238,516โˆ’14,4991.00
31 Mar 202253,015โˆ’96,0131.00
15 Mar 2022149,028+97,2021.67
28 Feb 202251,826+32,8761.00
15 Feb 202218,950+12,4351.00
31 Jan 20226,515โˆ’3,0281.00
14 Jan 20229,543โˆ’17,3951.00
31 Dec 202126,938+20,4181.00
15 Dec 20216,520โˆ’4,7691.00
30 Nov 202111,289โˆ’19,3781.00
15 Nov 202130,667โˆ’59,3311.00
29 Oct 202189,998+5,6001.38
15 Oct 202184,398โˆ’15,7311.30
30 Sep 2021100,129+12,7801.31
15 Sep 202187,349+76,2761.91
31 Aug 202111,073โˆ’93,5611.00
13 Aug 2021104,634โˆ’57,5511.71
30 Jul 2021162,185โˆ’58,4042.52
15 Jul 2021220,589+172,4582.69
30 Jun 202148,131โˆ’52,2111.00
15 Jun 2021100,342+83,8241.44
28 May 202116,518+8,9141.00
14 May 20217,604โ€“1.00

Scroll inside the table for earlier settlements, back to 14 May 2021.

Questions

Frequently asked questions

What is PFIX's short interest?
54,396 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 14,578 from the previous settlement.
Why is there no percentage for PFIX?
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 PFIX'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.

Ranked companies with a percentage: most shorted US stocks. Other funds by shares short and days to cover: most shorted ETFs. Other symbols with counts only: shares short without a percentage. Browse by name: US companies A to Z.