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HowShorted

IBRN short interest NYSE Arca

iShares Neuroscience and Healt. 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
5,928
vs previous settlement
+1,025 (+20.9%)
days to cover
2.16
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for IBRN: 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
197
14 Sep 2026
Highest in window
4,317
12 Jun 2026
Days with a balance
144
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for iShares Neuroscience and Healt 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 4.3K shares.

History

Every FINRA settlement we hold for IBRN, newest first.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 20265,928+1,0252.16
31 Aug 20264,903+1,4512.49
14 Aug 20263,452−4,4431.00
31 Jul 20267,895+4,8413.62
15 Jul 20263,054−3711.00
30 Jun 20263,425−9,5631.00
15 Jun 202612,988+7,4425.45
29 May 20265,546+4,1884.60
15 May 20261,358−1641.07
30 Apr 20261,522−7851.23
15 Apr 20262,307+1,9861.00
31 Mar 2026321−4,2471.00
13 Mar 20264,568+1,6512.42
27 Feb 20262,917−1,8923.01
13 Feb 20264,809+1,2237.76
30 Jan 20263,586+1,9451.00
15 Jan 20261,641−2,8821.09
31 Dec 20254,523+1955.00
15 Dec 20254,328+2,9132.86
28 Nov 20251,415−5,8622.51
14 Nov 20257,277+4,6864.73
31 Oct 20252,591+2,1861.58
15 Oct 2025405+1261.00
30 Sep 2025279+241.00
15 Sep 2025255−2231.00
29 Aug 2025478−1543.25
15 Aug 2025632−8841.18
31 Jul 20251,516−1605.85
15 Jul 20251,676−213.41
30 Jun 20251,678+1964.78
13 Jun 20251,482−2822.17
30 May 20251,764−10,4041.00
15 May 202512,168+1,83510.80
30 Apr 202510,333−17230.84
15 Apr 202510,505+2,8155.88
31 Mar 20257,690+26614.06
14 Mar 20257,424+57416.72
28 Feb 20256,850−1977.96
14 Feb 20257,047+7812.49
31 Jan 20256,969+6,8735.90
15 Jan 202596+91.00
31 Dec 202487−31.00
13 Dec 202490−541.00
29 Nov 2024144+661.00
15 Nov 202478−1131.00
31 Oct 2024191−961.03
15 Oct 2024287−1181.42
30 Sep 2024405+1441.00
13 Sep 2024261−81.54
30 Aug 2024269−4101.00
15 Aug 2024679+5272.82
31 Jul 2024152−3191.00
15 Jul 2024471+221.00
28 Jun 2024449+2321.00
14 Jun 2024217+1621.00
31 May 202455−31.00
15 May 202458+31.00
30 Apr 202455−81.00
15 Apr 202463−4811.00
28 Mar 2024544+3651.36
15 Mar 2024179−8811.00
29 Feb 20241,060+8491.26
15 Feb 2024211−1551.00
31 Jan 2024366−1,7721.00
12 Jan 20242,138−1591.01
29 Dec 20232,297+1831.00
15 Dec 20232,114+2781.00
30 Nov 20231,836+2556.18
15 Nov 20231,581+2737.15
31 Oct 20231,308+221.32
13 Oct 20231,286−1384.56
29 Sep 20231,424−4163.16
15 Sep 20231,840+205.58
31 Aug 20231,820+893.14
15 Aug 20231,731−5411.22
31 Jul 20232,272+7752.07
14 Jul 20231,497+5422.92
30 Jun 2023955+2123.32
15 Jun 2023743+3741.04
31 May 2023369−3151.00
15 May 2023684+2712.16
28 Apr 2023413−3,5891.00
14 Apr 20234,002+3,4592.94
31 Mar 2023543+1832.23
15 Mar 2023360−1911.00
28 Feb 2023551−1,5621.07
15 Feb 20232,113+1,3443.95
31 Jan 2023769−1,4461.65
13 Jan 20232,215−6441.87
30 Dec 20222,859+17717.76
15 Dec 20222,682+2879.93
30 Nov 20222,395+1,7554.18
15 Nov 2022640−3281.00
31 Oct 2022968−1,2806.50
14 Oct 20222,248+6093.66
30 Sep 20221,639+1,1182.54
15 Sep 2022521−1,0571.00
31 Aug 20221,578–2.96

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

Questions

Frequently asked questions

What is IBRN's short interest?
5,928 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, up 1,025 from the previous settlement.
Why is there no percentage for IBRN?
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 IBRN's days to cover?
2.16 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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