Stocks › Biotechnology › OCS

Oculis OCS

US equityMarket cap rank #3711Biotechnology

$8.50 −$0.22 (-2.52%)

Pre-market · Oct 8, 8:40 am ET · After hours $8.50 0.00%

Open$8.83

Prev close$8.72

Day range$8.35 – $8.83

Volume173.7K

Market cap$523.50M

P/E (TTM)–

Dividend yield–

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership46.0%+0.00 pts vs. prior quarter

Institutions holding74+0 vs. prior quarter

Insider trades (recent)0 buys / 1 sellsNet selling

Short interest2.51% of floatDays to cover 9.9 · as of 15 Sep 2026

Short-sale volume share13.5%5-day average of daily volume

Short-sale volume as % of daily volume

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$1.57M (4 inflow days, 16 outflow days).

Net flow by order size, last 20 sessions

Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.

The five largest holders on file together own 25.9% of shares outstanding.

Largest holders

Eqt Fund Management S.à R.L.11.26%
BVCF Management Ltd3.95%
Gildi - lífeyrissjódur3.94%
abrdn plc3.50%
Millennium Management LLC3.31%
Pivotal BioVenture Partners LLC2.93%
Riad Sherif2.11%
Citadel Advisors LLC1.60%

By investor type

VC/PE Fund21.49%
Hedge Fund10.96%
Mutual Fund8.77%
Corporate Pension Plan3.94%
Individual/Insider3.85%
Public Company0.51%
Private Company0.30%
Family Office/Trust0.03%

Reported short interest has risen from 1.96% to 2.51% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Recent institutional activity

Holder	Type	Period	Share change	New stake
Millennium Management LLC	Hedge Fund	2026/Q3	+1,129,433	3.3%
Eqt Fund Management S.à R.L.	VC/PE Fund	2026/Q3	+1,050,000	11.3%
Braidwell LP	Hedge Fund	2026/Q3	+834,183	1.4%
Citadel Advisors LLC	Hedge Fund	2026/Q3	+825,920	1.6%
Artal Group S.A.	VC/PE Fund	2026/Q3	+625,000	1.0%
Columbia Management Investment Advisers, LLC	Mutual Fund	2026/Q3	+619,922	1.0%
PFM Health Sciences, LP	Hedge Fund	2026/Q3	+436,042	0.7%
Franklin Resources	Mutual Fund	2026/Q3	+434,751	0.7%
abrdn plc	Mutual Fund	2026/Q3	+412,863	3.5%
Manulife Asset Management	Mutual Fund	2026/Q3	+398,980	0.6%
Marshall Wace LLP	Hedge Fund	2026/Q3	+394,880	0.6%
Perceptive Advisors LLC	VC/PE Fund	2026/Q3	+315,000	1.3%
Qube Research & Technologies Ltd	Mutual Fund	2026/Q3	+241,623	0.4%
Saturn V Capital Management LP	Hedge Fund	2026/Q3	+168,119	1.1%
Point72 Asset Management, L.P.	Hedge Fund	2026/Q3	+164,276	0.4%

Institutional buy/sell activity by reporting period, largest moves first.

Insider transactions

Date	Insider	Title	Transaction	Shares	Price	Held after
8 Oct 2025	Christina Ackermann	Independent Director	Intent to Sell (Form 144)	-7,460	$19.87	–

From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.

Short interest, by report

Report date	Shares short	% of float	Days to cover
15 Sep 2026	1,551,805	2.5%	9.9
31 Aug 2026	1,490,077	2.4%	9.1
14 Aug 2026	1,460,411	2.4%	5.3
31 Jul 2026	1,460,748	2.4%	4.7
15 Jul 2026	1,505,142	2.5%	4.0
30 Jun 2026	1,183,674	2.0%	2.0

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