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RFIX short interest NYSE Arca

Simplify Bond Bull ETF. 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
35,840
vs previous settlement
−8,142 (-18.5%)
days to cover
1.00
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for RFIX: 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
3,832
14 Sep 2026
Highest in window
286,810
20 Mar 2026
Days with a balance
134
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Simplify Bond Bull ETF 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 287K shares.

History

Every FINRA settlement we hold for RFIX, newest first.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 202635,840−8,1421.00
31 Aug 202643,982−6,3091.00
14 Aug 202650,291−30,6021.00
31 Jul 202680,893+7,2021.00
15 Jul 202673,691−3,8031.00
30 Jun 202677,494+76,5031.00
15 Jun 2026991−6,0511.00
29 May 20267,042+4,0071.00
15 May 20263,035−3,1641.00
30 Apr 20266,199+8761.00
15 Apr 20265,323−46,4391.00
31 Mar 202651,762+36,7741.00
13 Mar 202614,988−89,6701.00
27 Feb 2026104,658+44,9391.00
13 Feb 202659,719+17,8151.00
30 Jan 202641,904−54,7691.00
15 Jan 202696,673−4,4421.00
31 Dec 2025101,115+97,0711.00
15 Dec 20254,044−70,0841.00
28 Nov 202574,128+31,7881.00
14 Nov 202542,340+39,4391.00
31 Oct 20252,901−23,0251.00
15 Oct 202525,926+24,4531.00
30 Sep 20251,473+1,0541.00
15 Sep 2025419−6,5181.00
29 Aug 20256,937+6,4131.00
15 Aug 2025524−51,9861.00
31 Jul 202552,510+34,0651.00
15 Jul 202518,445+9821.00
30 Jun 202517,463+17,4211.00
13 Jun 202542−3,5191.00
30 May 20253,561−10,7231.00
15 May 202514,284+11,2001.00
30 Apr 20253,084−5,1191.00
15 Apr 20258,203+6,2681.00
31 Mar 20251,935−9,6631.00
14 Mar 202511,598+9471.00
28 Feb 202510,651−25,7701.00
14 Feb 202536,421+36,0021.06
31 Jan 2025419−9,7511.00
15 Jan 202510,170+2,8241.00
31 Dec 20247,346+1,7631.00
13 Dec 20245,583–1.33

Scroll inside the table for earlier settlements, back to 13 Dec 2024.

Questions

Frequently asked questions

What is RFIX's short interest?
35,840 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 8,142 from the previous settlement.
Why is there no percentage for RFIX?
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 RFIX'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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