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HowShorted

ZROZ short interest NYSE Arca

PIMCO 25+ Year Zero Coupon U.S. 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
350,704
vs previous settlement
โˆ’180,323 (-34.0%)
days to cover
1.00
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for ZROZ: 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.

Latest balance
56
14 Sep 2026
Highest in window
1,178,020
19 Aug 2026
Days with a balance
57
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for PIMCO 25+ Year Zero Coupon U.S 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 1.2M shares.

History

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

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 2026350,704โˆ’180,3231.00
31 Aug 2026531,027+198,8631.00
14 Aug 2026332,164+23,1851.00
31 Jul 2026308,979+57,2091.00
15 Jul 2026251,770+121,5811.00
30 Jun 2026130,189โˆ’7,7681.00
15 Jun 2026137,957โˆ’203,8061.00
29 May 2026341,763+104,3711.00
15 May 2026237,392+81,7941.00
30 Apr 2026155,598โˆ’24,8691.00
15 Apr 2026180,467โˆ’31,6481.00
31 Mar 2026212,115+123,7161.00
13 Mar 202688,399+8,5111.00
27 Feb 202679,888โˆ’135,6261.00
13 Feb 2026215,514โˆ’13,2781.00
30 Jan 2026228,792+73,0461.00
15 Jan 2026155,746+46,2511.00
31 Dec 2025109,495โˆ’245,4951.00
15 Dec 2025354,990+233,9531.00
28 Nov 2025121,037โˆ’134,0801.00
14 Nov 2025255,117โˆ’70,9281.00
31 Oct 2025326,045โˆ’82,2141.00
15 Oct 2025408,259โˆ’91,5811.55
30 Sep 2025499,840+104,6051.45
15 Sep 2025395,235+127,9581.00
29 Aug 2025267,277โˆ’101,3621.00
15 Aug 2025368,639+85,1401.18
31 Jul 2025283,499+140,8321.16
15 Jul 2025142,667+31,8981.00
30 Jun 2025110,769+38,2891.00
13 Jun 202572,480โˆ’29,8821.00
30 May 2025102,362โˆ’232,2681.00
15 May 2025334,630+275,8561.00
30 Apr 202558,774โˆ’124,6021.00
15 Apr 2025183,376โˆ’20,8421.00
31 Mar 2025204,218+6,4741.00
14 Mar 2025197,744โˆ’87,2261.00
28 Feb 2025284,970+129,3031.00
14 Feb 2025155,667+61,0841.00
31 Jan 202594,583โˆ’263,0691.00
15 Jan 2025357,652+89,8381.00
31 Dec 2024267,814โˆ’206,7611.00
13 Dec 2024474,575โˆ’8,2521.05
29 Nov 2024482,827โˆ’104,2101.41
15 Nov 2024587,037+210,0881.05
31 Oct 2024376,949+237,2051.00
15 Oct 2024139,744+99,0191.00
30 Sep 202440,725โˆ’84,6191.00
13 Sep 2024125,344+57,3001.00
30 Aug 202468,044โˆ’206,4901.00
15 Aug 2024274,534+221,5551.00
31 Jul 202452,979โˆ’16,3641.00
15 Jul 202469,343โˆ’10,9791.00
28 Jun 202480,322+34,0491.00
14 Jun 202446,273+37,5811.00
31 May 20248,692โˆ’28,0051.00
15 May 202436,697+6,3201.00
30 Apr 202430,377โˆ’102,4701.00
15 Apr 2024132,847+127,1451.00
28 Mar 20245,702โˆ’49,6491.00
15 Mar 202455,351โˆ’14,7351.00
29 Feb 202470,086โˆ’7,4211.00
15 Feb 202477,507+46,0611.00
31 Jan 202431,446+1,2721.00
12 Jan 202430,174+3,7061.00
29 Dec 202326,468โˆ’20,9621.00
15 Dec 202347,430โˆ’80,4011.00
30 Nov 2023127,831โˆ’104,6171.00
15 Nov 2023232,448สณโˆ’122,0751.00
31 Oct 2023354,523+36,1111.00
13 Oct 2023318,412+90,9681.00
29 Sep 2023227,444+118,6481.00
15 Sep 2023108,796โˆ’104,1931.00
31 Aug 2023212,989โˆ’1751.00
15 Aug 2023213,164+144,2791.00
31 Jul 202368,885โˆ’4,5911.00
14 Jul 202373,476โˆ’21,0561.00
30 Jun 202394,532+64,4651.00
15 Jun 202330,067+8,3841.00
31 May 202321,683+11,2211.00
15 May 202310,462โˆ’19,2061.00
28 Apr 202329,668โˆ’2121.00
14 Apr 202329,880+18,1551.00
31 Mar 202311,725โˆ’7,7871.00
15 Mar 202319,512โˆ’4,8961.00
28 Feb 202324,408+3,4371.00
15 Feb 202320,971โˆ’3,3861.00
31 Jan 202324,357โˆ’50,5311.00
13 Jan 202374,888โˆ’46,4901.00
30 Dec 2022121,378+4,3571.00
15 Dec 2022117,021+1,9721.00
30 Nov 2022115,049โˆ’19,6851.00
15 Nov 2022134,734โˆ’49,0231.00
31 Oct 2022183,757+14,3081.00
14 Oct 2022169,449โˆ’78,2721.00
30 Sep 2022247,721+8,7381.00
15 Sep 2022238,983โˆ’63,7111.01
31 Aug 2022302,694โˆ’35,9761.59
15 Aug 2022338,670+166,2492.06
29 Jul 2022172,421+23,6821.00
15 Jul 2022148,739โˆ’1,3611.00
30 Jun 2022150,100+18,4111.17
15 Jun 2022131,689โˆ’5,3621.00
31 May 2022137,051+8,4041.00
13 May 2022128,647โˆ’2,7321.00
29 Apr 2022131,379+96,7221.00
14 Apr 202234,657+12,3431.00
31 Mar 202222,314โˆ’13,0661.00
15 Mar 202235,380+12,0701.00
28 Feb 202223,310+1,7141.00
15 Feb 202221,596+3,2821.00
31 Jan 202218,314+12,9161.00
14 Jan 20225,398+7981.00
31 Dec 20214,600โˆ’6,1491.00
15 Dec 202110,749+1,0001.00
30 Nov 20219,749+1,3061.00
15 Nov 20218,443โˆ’7,1791.00
29 Oct 202115,622+7,3151.00
15 Oct 20218,307+1,5831.00
30 Sep 20216,724โˆ’1,3841.00
15 Sep 20218,108โˆ’261.00
31 Aug 20218,134โˆ’3,8261.00
13 Aug 202111,960โˆ’11,1021.00
30 Jul 202123,062+12,1391.00
15 Jul 202110,923โˆ’1,5011.00
30 Jun 202112,424โˆ’6,8721.00
15 Jun 202119,296สณโˆ’12,2551.00
28 May 202131,551+3,1841.06
14 May 202128,367โˆ’6,2681.00
30 Apr 202134,635โˆ’1,1001.00
15 Apr 202135,735โˆ’3,3311.25
31 Mar 202139,066+5,1031.29
15 Mar 202133,963โˆ’1,5191.00
26 Feb 202135,482+6,8581.00
12 Feb 202128,624+3,7641.09
29 Jan 202124,860โˆ’24,8121.00
15 Jan 202149,672+26,6991.00
31 Dec 202022,973+7,0351.00
15 Dec 202015,938+6,7701.00
30 Nov 20209,168+1,6341.00
13 Nov 20207,534โˆ’52,8391.00
30 Oct 202060,373+31,2571.00
15 Oct 202029,116+6,3211.00
30 Sep 202022,795โˆ’1,1331.00
15 Sep 202023,928+14,0371.00
31 Aug 20209,891โˆ’6,6431.00
14 Aug 202016,534โˆ’8211.00
31 Jul 202017,355+2,3321.00
15 Jul 202015,023โˆ’3,0271.00
30 Jun 202018,050โˆ’3,7421.00
15 Jun 202021,792+10,7551.00
29 May 202011,037+5931.00
15 May 202010,444โˆ’18,7691.00
30 Apr 202029,213+21,8181.00
15 Apr 20207,395โˆ’52,1351.00
31 Mar 202059,530+47,4971.00
13 Mar 202012,033โˆ’9,3251.00
28 Feb 202021,358+4,7641.00
14 Feb 202016,594โˆ’7,8221.00
31 Jan 202024,416+13,2151.00
15 Jan 202011,201โˆ’1,0451.00
31 Dec 201912,246+9,8521.00
13 Dec 20192,394โˆ’2,8311.00
29 Nov 20195,225โˆ’2,4711.00
15 Nov 20197,696โˆ’6,6351.00
31 Oct 201914,331+5601.00
15 Oct 201913,771โˆ’1751.00
30 Sep 201913,946โˆ’1,4271.00
13 Sep 201915,373โˆ’16,9671.00
30 Aug 201932,340+19,2921.00
15 Aug 201913,048+4,8331.00
31 Jul 20198,215โˆ’24,2241.00
15 Jul 201932,439+20,2881.00
28 Jun 201912,151โˆ’15,5481.00
14 Jun 201927,699โˆ’28,4231.00
31 May 201956,122+31,5632.00
15 May 201924,559+5,7921.52
30 Apr 201918,767โˆ’4,9461.45
15 Apr 201923,713โˆ’8,2351.01
29 Mar 201931,948+12,0231.00
15 Mar 201919,925+3,4391.00
28 Feb 201916,486+2,5441.00
15 Feb 201913,942+1,0951.00
31 Jan 201912,847โˆ’6,9321.00
15 Jan 201919,779+9,7621.00
31 Dec 201810,017+4191.00
14 Dec 20189,598+1,2001.00
30 Nov 20188,398โˆ’16,9711.01
15 Nov 201825,369+13,8771.21
31 Oct 201811,492โˆ’1,7951.00
15 Oct 201813,287โˆ’12,1491.00
28 Sep 201825,436+5,3481.00
14 Sep 201820,088+10,9241.86
31 Aug 20189,164โˆ’7,6711.00
15 Aug 201816,835โˆ’7,8292.67
31 Jul 201824,664+15,1862.30
13 Jul 20189,478สณโˆ’11,4541.00
29 Jun 201820,932โˆ’1,4861.49
15 Jun 201822,418+11,7472.84
31 May 201810,671โˆ’46,6761.00
15 May 201857,347+49,9562.84
30 Apr 20187,391โˆ’9041.00
13 Apr 20188,295โˆ’33,3981.00
29 Mar 201841,693+29,5691.32
15 Mar 201812,124โˆ’15,9891.18
28 Feb 201828,113+21,1892.14
15 Feb 20186,924โˆ’6011.00
31 Jan 20187,525+8131.00
12 Jan 20186,712โˆ’2,8511.00
29 Dec 20179,563โ€“1.00

Scroll inside the table for earlier settlements, back to 29 Dec 2017.

Questions

Frequently asked questions

What is ZROZ's short interest?
350,704 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 180,323 from the previous settlement.
Why is there no percentage for ZROZ?
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 ZROZ'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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