VivoSim Labs

VIVS · NASDAQ

$0.1713+$0.0138 (+8.76%)TodayMarket closed · Oct 20, 4:05 PM ET

Prev close $0.1575

Who owns VIVS

Largest institutional holders, from their latest 13F filings

The 10 largest institutions hold 18.5% of VIVS’s shares.

Armistice Capital LLC14.4%
Esousa Group Holdings LLC2.6%
Murphy (Keith E)0.2%
Geode Capital Management, L.L.C.0.2%
Next 6 largest institutions1.0%
All other shareholders81.5%

Top institutional holders of VIVS
Holder	Shares	% of shares	Change, last filing	Filed
Armistice Capital LLC	1.74M	14.39%	+1.74M	Aug 13, 2026
Esousa Group Holdings LLC	319.43K	2.65%	+32.87K	Jun 30, 2026
Murphy (Keith E)	27.09K	0.22%	+15.00K	Aug 13, 2026
Geode Capital Management, L.L.C.	25.98K	0.22%	−10.87K	Jun 30, 2026
Cohen (Douglas Jay)	20.90K	0.17%	+15.00K	Aug 13, 2026
Lialin (Tony Serge)	20.00K	0.17%	+20.00K	Aug 31, 2026
Stern (Adam K.)	19.90K	0.16%	+15.00K	Aug 13, 2026
Milhous (Alison Tjosvold)	19.90K	0.16%	+15.00K	Aug 13, 2026
Renaissance Technologies LLC	18.50K	0.15%	+18.50K	Jun 30, 2026
HRT Financial LP	18.32K	0.15%	+18.32K	Jun 30, 2026

Largest mutual fund holders

Top mutual fund holders of VIVS
Holder	Shares	% of shares	Change, last filing	Filed
Vanguard Extended Market Index Fund	15.37K	0.13%	+0	Jul 31, 2026
Fidelity Extended Market Index Fund	13.67K	0.11%	+0	Jul 31, 2026
Fidelity Series Total Market Index Fund	4.05K	0.03%	+0	Jul 31, 2026
Fidelity Total Market Index Fund	991	0.01%	+0	Jul 31, 2026

Insider trades

Form 4 filings by officers, directors and large holders

Over the last 6 months, insiders bought $2.80K (1 trade) of VIVS on the open market, with no sales.

Latest VIVS insider transactions
Insider	Date	Type	Shares	Price	Value
Lialin Tony Serge	Aug 31, 2026	Buy	10.00K	$0.2804	$2.80K

Short interest

Settled Sep 30, 2026

Shares short: 707.87K
Days to cover: 1.00
% of shares outstanding: 5.87%
Average daily volume: 1.26M
Change since last report: +25.4%

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