What is VIVS's short interest?

564,680 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 142,092 from the previous settlement.

Why is there no percentage for VIVS?

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 VIVS's days to cover?

1.09 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.

VIVS short interest Nasdaq Capital Market

VivoSim Labs, Inc. Common Stoc. 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: 564,680
vs previous settlement: −142,092 (-20.1%)
days to cover: 1.09
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 VIVS: 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: 2,975; 11 Sep 2026
Highest in window: 9,433,419; 16 Jul 2026
Days with a balance: 121
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 9.4M shares.

History

Every FINRA settlement we hold for VIVS, newest first.

Full reported short interest history
Settlement date	Shares short	Change	Days to cover
15 Sep 2026	564,680	−142,092	1.09
31 Aug 2026	706,772	−44,644	1.00
14 Aug 2026	751,416	+180,949	1.00
31 Jul 2026	570,467	+521,737	1.00
15 Jul 2026	48,730	−65,181	1.00
30 Jun 2026	113,911	+93,939	1.00
15 Jun 2026	19,972	−13,372	1.00
29 May 2026	33,344	−6,938	1.00
15 May 2026	40,282	−12,506	1.17
30 Apr 2026	52,788	+24,819	1.00
15 Apr 2026	27,969	−63,248	1.00
31 Mar 2026	91,217	+76,332	1.00
13 Mar 2026	14,885	−17,941	1.00
27 Feb 2026	32,826	−55,044	1.00
13 Feb 2026	87,870	−687,041	1.00
30 Jan 2026	774,911	+766,515	1.00
15 Jan 2026	8,396	−2,709	1.00
31 Dec 2025	11,105	−13,992	1.00
15 Dec 2025	25,097	−13,261	1.00
28 Nov 2025	38,358	−100,469	1.00
14 Nov 2025	138,827	−357,454	1.83
31 Oct 2025	496,281	+424,263	1.00
15 Oct 2025	72,018	+1,126	1.04
30 Sep 2025	70,892	−150,865	1.00
15 Sep 2025	221,757	+183,835	1.00
29 Aug 2025	37,922	−5,555	1.00
15 Aug 2025	43,477	+5,467	1.45
31 Jul 2025	38,010	−19,133	1.00
15 Jul 2025	57,143	+12,758	1.00
30 Jun 2025	44,385	−12,063	1.01
13 Jun 2025	56,448	−14,011	1.07
30 May 2025	70,459	−44,054	1.00
15 May 2025	114,513	−32,185	1.00
30 Apr 2025	146,698	–	1.00

Scroll inside the table for earlier settlements, back to 30 Apr 2025.

Questions

Frequently asked questions

What is VIVS's short interest?: 564,680 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 142,092 from the previous settlement.
Why is there no percentage for VIVS?: 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 VIVS's days to cover?: 1.09 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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