What is IMOS's short interest?

90,533 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 17,325 from the previous settlement.

Why is there no percentage for IMOS?

Because no defensible share count exists to divide by: an SEC filer exists but no defensible share count is available yet. The symbol maps to an SEC filer, but its share count cannot be used yet. A newly listed company needs two cover-page counts on file before the first is trusted; a split or an unexplained jump pauses publication until a fresh SEC count corroborates it; a secondary share class publishes under the company's primary line; and a foreign filer's short count is in depositary-share units. This page upgrades to a percentage automatically once a defensible count exists.

What is IMOS's days to cover?

1.43 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.

IMOS short interest Nasdaq Global Market

ChipMOS TECHNOLOGIES INC. Amer. FINRA's reported shares short for this symbol, twice a month by settlement date, shown as the regulator publishes them. No percentage is shown: an SEC filer exists but no defensible share count is available yet.

Shares short: 90,533
vs previous settlement: −17,325 (-16.1%)
days to cover: 1.43
Settlement date: 15 Sep 2026

Shares short over time

Days to cover

FINRA's own figure: reported shares short divided by the security's average daily trading volume, published alongside each settlement.

Fails to deliver

The SEC's fails-to-deliver figure for IMOS: 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: 83; 28 Aug 2026
Highest in window: 5,763; 29 Jun 2026
Days with a balance: 44
Window: 16 Sep 2025 to 14 Sep 2026

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 5.8K shares.

History

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

Full reported short interest history
Settlement date	Shares short	Change	Days to cover
15 Sep 2026	90,533	−17,325	1.43
31 Aug 2026	107,858	−7,348	1.74
14 Aug 2026	115,206	+17,157	1.00
31 Jul 2026	98,049	−18,001	1.00
15 Jul 2026	116,050	+37,308	1.00
30 Jun 2026	78,742	+3,674	1.00
15 Jun 2026	75,068	+2,132	1.00
29 May 2026	72,936	+34,077	1.00
15 May 2026	38,859	+10,020	1.00
30 Apr 2026	28,839	−8,346	1.00
15 Apr 2026	37,185	+16,304	1.00
31 Mar 2026	20,881	−16,571	1.00
13 Mar 2026	37,452	+21,889	1.00
27 Feb 2026	15,563	−3,893	1.00
13 Feb 2026	19,456	+3,362	1.00
30 Jan 2026	16,094	−73,787	1.00
15 Jan 2026	89,881	+67,533	2.22
31 Dec 2025	22,348	−10,239	3.31
15 Dec 2025	32,587	+16,135	1.98
28 Nov 2025	16,452	−15,616	1.00
14 Nov 2025	32,068	−78	1.22
31 Oct 2025	32,146	+10,166	2.84
15 Oct 2025	21,980	−2,477	1.79
30 Sep 2025	24,457	+652	1.85
15 Sep 2025	23,805	+298	1.34
29 Aug 2025	23,507	−783	1.51
15 Aug 2025	24,290	+1,192	1.25
31 Jul 2025	23,098	+319	1.12
15 Jul 2025	22,779	−4,584	1.25
30 Jun 2025	27,363	+1,182	1.00
13 Jun 2025	26,181	−420	2.13
30 May 2025	26,601	−6,375	1.50
15 May 2025	32,976	+2,125	1.08
30 Apr 2025	30,851	+17,664	1.00
15 Apr 2025	13,187	−1,362	1.00
31 Mar 2025	14,549	−3,007	1.00
14 Mar 2025	17,556	−10,508	1.00
28 Feb 2025	28,064	−8,169	1.34
14 Feb 2025	36,233	−11,293	1.57
31 Jan 2025	47,526	+11,205	1.74
15 Jan 2025	36,321	+8,488	1.57
31 Dec 2024	27,833	+203	1.02
13 Dec 2024	27,630	+7,679	1.00
29 Nov 2024	19,951	+2,532	1.00
15 Nov 2024	17,419	+4,281	1.00
31 Oct 2024	13,138	−3,908	1.00
15 Oct 2024	17,046	+3,615	1.39
30 Sep 2024	13,431	−1,237	1.03
13 Sep 2024	14,668	+906	1.00
30 Aug 2024	13,762	−10,304	1.00
15 Aug 2024	24,066	+4,710	1.00
31 Jul 2024	19,356	+9,313	1.01
15 Jul 2024	10,043	−472	1.00
28 Jun 2024	10,515	−2,127	1.00
14 Jun 2024	12,642	−910	1.12
31 May 2024	13,552	+1,243	1.01
15 May 2024	12,309	−6,553	1.00
30 Apr 2024	18,862	−17,973	1.61
15 Apr 2024	36,835	−2,711	2.74
28 Mar 2024	39,546	−3,952	2.01
15 Mar 2024	43,498	−26,314	1.28
29 Feb 2024	69,812	+439	2.28
15 Feb 2024	69,373	+60,042	1.37
31 Jan 2024	9,331	−490	1.52
12 Jan 2024	9,821	+1,025	1.08
29 Dec 2023	8,796	−6,579	1.00
15 Dec 2023	15,375	+4,483	1.81
30 Nov 2023	10,892	−4,508	1.12
15 Nov 2023	15,400	−6,203	1.00
31 Oct 2023	21,603	−14,595	1.29
13 Oct 2023	36,198	−9,367	2.76
29 Sep 2023	45,565	+2,006	3.60
15 Sep 2023	43,559	+8,759	2.90
31 Aug 2023	34,800	+128	2.12
15 Aug 2023	34,672	−13,040	1.46
31 Jul 2023	47,712	−4,584	2.58
14 Jul 2023	52,296	−40,106	1.36
30 Jun 2023	92,402	+75,328	2.28
15 Jun 2023	17,074	−733	1.00
31 May 2023	17,807	−6,901	1.49
15 May 2023	24,708	+6,436	2.61
28 Apr 2023	18,272	+3,069	1.34
14 Apr 2023	15,203	+1,971	1.00
31 Mar 2023	13,232	+336	1.07
15 Mar 2023	12,896	+2,259	1.00
28 Feb 2023	10,637	−7,500	1.00
15 Feb 2023	18,137	+5,304	1.00
31 Jan 2023	12,833	−1,995	1.00
13 Jan 2023	14,828	−18,248	1.00
30 Dec 2022	33,076	+9,466	1.19
15 Dec 2022	23,610	−19,887	1.04
30 Nov 2022	43,497	−7,970	2.19
15 Nov 2022	51,467	−30,591	1.20
31 Oct 2022	82,058	+32,117	1.80
14 Oct 2022	49,941	+4,906	1.27
30 Sep 2022	45,035	+30,262	1.00
15 Sep 2022	14,773	−9,544	1.00
31 Aug 2022	24,317	+2,352	1.00
15 Aug 2022	21,965	−9,083	1.00
29 Jul 2022	31,048	−30,012	1.00
15 Jul 2022	61,060	−2,442	1.32
30 Jun 2022	63,502	+28,857	1.00
15 Jun 2022	34,645	+14,417	1.68
31 May 2022	20,228	−15,678	1.15
13 May 2022	35,906	+18,060	1.37
29 Apr 2022	17,846	−6,182	1.00
14 Apr 2022	24,028	+1,568	1.51
31 Mar 2022	22,460	−5,858	1.71
15 Mar 2022	28,318	+8,063	1.39
28 Feb 2022	20,255	−14,593	1.00
15 Feb 2022	34,848	−1,398	2.25
31 Jan 2022	36,246	+22,743	1.10
14 Jan 2022	13,503	−857	1.00
31 Dec 2021	14,360	+312	1.00
15 Dec 2021	14,048	−4,449	1.00
30 Nov 2021	18,497	−124,513	1.00
15 Nov 2021	143,010	−37,259	5.48
29 Oct 2021	180,269	−3,176	6.69
15 Oct 2021	183,445	−27,352	4.46
30 Sep 2021	210,797	+62,441	5.07
15 Sep 2021	148,356	+54,314	3.15
31 Aug 2021	94,042	+8,446	2.27
13 Aug 2021	85,596	+52,908	1.34
30 Jul 2021	32,688	+10,961	1.06
15 Jul 2021	21,727	+4,590	1.15
30 Jun 2021	17,137	−5,350	1.23
15 Jun 2021	22,487	+1,203	1.37
28 May 2021	21,284	−16,158	1.38
14 May 2021	37,442	−24,184	1.21
30 Apr 2021	61,626	+21,384	1.68
15 Apr 2021	40,242	+18,073	1.32
31 Mar 2021	22,169	−8,143	1.02
15 Mar 2021	30,312	+4,921	2.88
26 Feb 2021	25,391	−13,078	1.74
12 Feb 2021	38,469	+9,956	4.91
29 Jan 2021	28,513	−4,333	3.19
15 Jan 2021	32,846	+20,574	2.67
31 Dec 2020	12,272	−3,077	1.00
15 Dec 2020	15,349	+7,761	1.00
30 Nov 2020	7,588	−2,506	1.00
13 Nov 2020	10,094	+1,290	1.00
30 Oct 2020	8,804	+1,415	1.65
15 Oct 2020	7,389	−2,421	1.00
30 Sep 2020	9,810	+4,959	1.24
15 Sep 2020	4,851	−4,124	1.00
31 Aug 2020	8,975	+1,954	1.00
14 Aug 2020	7,021	−4,708	1.00
31 Jul 2020	11,729	+564	1.00
15 Jul 2020	11,165	+1,148	1.00
30 Jun 2020	10,017	−5,441	1.00
15 Jun 2020	15,458	+8,872	1.31
29 May 2020	6,586	−1,778	1.00
15 May 2020	8,364	+5,387	1.00
30 Apr 2020	2,977	−610	1.00
15 Apr 2020	3,587	−7,188	1.00
31 Mar 2020	10,775	−4,451	1.00
13 Mar 2020	15,226	+932	1.00
28 Feb 2020	14,294	+8,949	1.00
14 Feb 2020	5,345	+3,230	1.00
31 Jan 2020	2,115	−6,433	1.00
15 Jan 2020	8,548	+4,325	1.00
31 Dec 2019	4,223	−16,903	1.00
13 Dec 2019	21,126	+2,669	2.03
29 Nov 2019	18,457	−4,819	1.25
15 Nov 2019	23,276	+5,983	1.00
31 Oct 2019	17,293	+4,235	1.57
15 Oct 2019	13,058	+204	1.00
30 Sep 2019	12,854	−25,618	1.00
13 Sep 2019	38,472	−1,230	1.00
30 Aug 2019	39,702	+10,186	1.96
15 Aug 2019	29,516	+4,715	1.00
31 Jul 2019	24,801	+7,564	1.22
15 Jul 2019	17,237	−5,806	1.28
28 Jun 2019	23,043	−1,574	1.35
14 Jun 2019	24,617	+434	2.05
31 May 2019	24,183	−9,520	1.34
15 May 2019	33,703	−103	2.01
30 Apr 2019	33,806	−5,078	4.53
15 Apr 2019	38,884	+9,063	2.04
29 Mar 2019	29,821	−4,643	2.23
15 Mar 2019	34,464	+1,234	2.26
28 Feb 2019	33,230	−7,547	1.99
15 Feb 2019	40,777	−3,644	3.75
31 Jan 2019	44,421	−12,843	3.74
15 Jan 2019	57,264	−11,383	4.25
31 Dec 2018	68,647	−8,064	1.13
14 Dec 2018	76,711	−6,809	1.58
30 Nov 2018	83,520	−2,835	9.13
15 Nov 2018	86,355ʳ	−28,947	3.90
31 Oct 2018	115,302	−6,899	5.21
15 Oct 2018	122,201	+14,534	10.17
28 Sep 2018	107,667	−6,431	5.05
14 Sep 2018	114,098	−5,194	2.56
31 Aug 2018	119,292	−29,662	5.29
15 Aug 2018	148,954	−6,710	6.58
31 Jul 2018	155,664	−21,136	11.38
13 Jul 2018	176,800	−19,022	5.04
29 Jun 2018	195,822	+40,332	4.47
15 Jun 2018	155,490	−1,347	3.87
31 May 2018	156,837	+5,641	1.94
15 May 2018	151,196	−15,675	1.21
30 Apr 2018	166,871	−25,430	1.18
13 Apr 2018	192,301	−19,929	2.79
29 Mar 2018	212,230	+37,072	3.17
15 Mar 2018	175,158	−21,778	2.49
28 Feb 2018	196,936	−20,812	8.90
15 Feb 2018	217,748	−4,196	3.97
31 Jan 2018	221,944	+23,668	5.03
12 Jan 2018	198,276	−20,497	3.44
29 Dec 2017	218,773	–	4.12

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

Questions

Frequently asked questions

What is IMOS's short interest?: 90,533 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 17,325 from the previous settlement.
Why is there no percentage for IMOS?: Because no defensible share count exists to divide by: an SEC filer exists but no defensible share count is available yet. The symbol maps to an SEC filer, but its share count cannot be used yet. A newly listed company needs two cover-page counts on file before the first is trusted; a split or an unexplained jump pauses publication until a fresh SEC count corroborates it; a secondary share class publishes under the company's primary line; and a foreign filer's short count is in depositary-share units. This page upgrades to a percentage automatically once a defensible count exists.
What is IMOS's days to cover?: 1.43 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.