Skip to content
HowShorted

SDSI short interest Nasdaq Global Market

American Century ETF Trust Ame. FINRA's reported shares short for this symbol, twice a month by settlement date, shown as the regulator publishes them. No percentage is shown: no SEC filer maps to the symbol (funds, notes, preferreds, warrants and foreign listings).

Shares short
15,496
vs previous settlement
โˆ’1,628 (-9.5%)
days to cover
1.00
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for SDSI: 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
248
14 Sep 2026
Highest in window
17,200
20 Jul 2026
Days with a balance
177
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for American Century ETF Trust Ame 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 17K shares.

History

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

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 202615,496โˆ’1,6281.00
31 Aug 202617,124+81.00
14 Aug 202617,116+2,4651.00
31 Jul 202614,651โˆ’14,7591.00
15 Jul 202629,410+4,6051.22
30 Jun 202624,805+9,8841.01
15 Jun 202614,921โˆ’5,8181.00
29 May 202620,739+2,4221.00
15 May 202618,317โˆ’282,3541.52
30 Apr 2026300,671+292,3886.67
15 Apr 20268,283โˆ’2,6961.00
31 Mar 202610,979โˆ’13,7491.00
13 Mar 202624,728+5,3471.00
27 Feb 202619,381+8,4591.15
13 Feb 202610,922โˆ’9,4871.00
30 Jan 202620,409โˆ’2011.00
15 Jan 202620,610+10,9641.00
31 Dec 20259,646โˆ’1,7691.00
15 Dec 202511,415โˆ’4,6971.00
28 Nov 202516,112โˆ’5,1231.49
14 Nov 202521,235+4,6181.78
31 Oct 202516,617โˆ’16,6501.00
15 Oct 202533,267โˆ’1,3952.26
30 Sep 202534,662+21,3981.00
15 Sep 202513,264+1,9231.00
29 Aug 202511,341+2,2341.67
15 Aug 20259,107โˆ’3911.52
31 Jul 20259,498+2,4511.85
15 Jul 20257,047+3,6851.00
30 Jun 20253,362โˆ’2,8521.00
13 Jun 20256,214+3,3751.00
30 May 20252,839+4951.00
15 May 20252,344+1,7741.00
30 Apr 2025570โˆ’5161.00
15 Apr 20251,086โˆ’2,8011.00
31 Mar 20253,887โˆ’6,1881.00
14 Mar 202510,075+6,9581.23
28 Feb 20253,117โˆ’4,0331.00
14 Feb 20257,150โˆ’3,8521.00
31 Jan 202511,002โˆ’4,5571.46
15 Jan 202515,559+13,8012.94
31 Dec 20241,758โˆ’1,1971.00
13 Dec 20242,955+1,5671.00
29 Nov 20241,388โˆ’18,2631.00
15 Nov 202419,651+15,8422.57
31 Oct 20243,809โˆ’1,6601.00
15 Oct 20245,469+1,9952.18
30 Sep 20243,474โˆ’1,8831.40
13 Sep 20245,357+3,9081.01
30 Aug 20241,449+6701.00
15 Aug 2024779โˆ’6741.00
31 Jul 20241,453+1,3481.00
15 Jul 2024105โˆ’1,2411.00
28 Jun 20241,346โˆ’18,5081.00
14 Jun 202419,854+12,2391.00
31 May 20247,615โˆ’9,1223.43
15 May 202416,737+9,7752.65
30 Apr 20246,962โˆ’2,8441.00
15 Apr 20249,806+2391.82
28 Mar 20249,567โˆ’6484.42
15 Mar 202410,215+9,8231.00
29 Feb 2024392+3581.00
15 Feb 202434+321.00
31 Jan 20242โˆ’61.00
12 Jan 20248โˆ’3131.00
29 Dec 2023321โˆ’1201.00
15 Dec 202344101.00
30 Nov 2023441โˆ’21.00
15 Nov 2023443สณโˆ’1,8171.00
31 Oct 20232,260โˆ’14,4931.29
13 Oct 202316,753+2,5812.61
29 Sep 202314,172โˆ’4,8853.30
15 Sep 202319,057โˆ’24,18612.53
31 Aug 202343,243โˆ’9,40924.77
15 Aug 202352,652+32,00919.09
31 Jul 202320,643โˆ’17,3525.20
14 Jul 202337,995+31,1966.54
30 Jun 20236,799+5,2051.16
15 Jun 20231,594โˆ’1,8761.00
31 May 20233,470โˆ’4,9511.00
15 May 20238,421+6,5901.34
28 Apr 20231,831+4371.00
14 Apr 20231,394โˆ’6,9481.00
31 Mar 20238,342+6,6292.82
15 Mar 20231,713+4211.88
28 Feb 20231,292+5233.34
15 Feb 2023769โˆ’1,0791.00
31 Jan 20231,848+1,1212.26
13 Jan 2023727+2231.00
30 Dec 2022504โˆ’975.09
15 Dec 2022601+1652.31
30 Nov 2022436โˆ’991.54
15 Nov 2022535โˆ’1851.00
31 Oct 2022720โ€“2.26

Scroll inside the table for earlier settlements, back to 31 Oct 2022.

Questions

Frequently asked questions

What is SDSI's short interest?
15,496 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 1,628 from the previous settlement.
Why is there no percentage for SDSI?
Because no defensible share count exists to divide by: no SEC filer maps to the symbol (funds, notes, preferreds, warrants and foreign listings). No SEC filer maps to this symbol in EDGAR's ticker file. That is the normal case for funds, exchange-traded notes, preferred shares, warrants, units and foreign listings, none of which file a share count we could divide by.
What is SDSI'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 symbols with counts only: shares short without a percentage. Browse by name: US companies A to Z.