Stocks › Biotechnology › VOR

Vor Biopharma VOR

US equityMarket cap rank #3164Biotechnology

$18.78 +$0.47 (+2.57%)

Pre-market · Oct 8, 7:00 am ET · After hours $18.78 0.00%

Open$18.09

Prev close$18.31

Day range$17.86 – $18.90

Volume563.1K

Market cap$1.11B

P/E (TTM)1.6

Dividend yield–

Ownership & positioning

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

Institutional ownership98.3%-0.91 pts vs. prior quarter

Institutions holding129+2 vs. prior quarter

Insider trades (recent)19 buys / 28 sellsNet selling

Short interest13.36% of floatDays to cover 11.1 · as of 15 Sep 2026

Short-sale volume share24.5%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: −$3.29M (6 inflow days, 14 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 41.0% of shares outstanding.

Largest holders

FMR11.00%
TCG Crossover Management, LLC9.59%
RA Capital Management, L.P.7.61%
Forbion Capital Partners B.V.6.96%
BlackRock5.86%
VERVE CAPITAL, Inc.5.77%
VR Management, LLC5.14%
State Street Global Advisors4.42%

By investor type

VC/PE Fund46.81%
Mutual Fund31.91%
Hedge Fund18.19%
Individual/Insider2.00%
Public Company1.03%
Private Company0.20%
Insurance Company0.14%
Government Pension Fund0.05%

Reported short interest has fallen from 14.29% to 13.36% 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
RA Capital Management, L.P.	VC/PE Fund	2026/Q3	+2,101,787	7.6%
Franklin Resources	Mutual Fund	2026/Q3	+425,521	0.7%
FMR	Mutual Fund	2026/Q3	+1,577,847	11.0%
VERVE CAPITAL, Inc.	VC/PE Fund	2026/Q3	+3,410,892	5.8%
BlackRock	Mutual Fund	2026/Q3	+2,673,348	5.9%
State Street Global Advisors	Mutual Fund	2026/Q3	+1,497,878	4.4%
Nantahala Capital Management, LLC	Hedge Fund	2026/Q3	+807,214	1.4%
Vanguard Capital Management, LLC	Mutual Fund	2026/Q3	+766,241	4.0%
Geode Capital Management, LLC	Mutual Fund	2026/Q3	+719,896	1.8%
ADAR1 Capital Management, LLC	Hedge Fund	2026/Q3	+680,626	1.2%
Nan Fung Trinity (HK) Limited	VC/PE Fund	2026/Q3	+646,550	1.1%
Woodline Partners LP	Hedge Fund	2026/Q3	+379,723	0.6%
Vanguard Portfolio Management, LLC	Mutual Fund	2026/Q3	+340,364	0.6%
Northern Trust Global Investments	Mutual Fund	2026/Q3	+264,193	0.6%
Millennium Management LLC	Hedge Fund	2026/Q3	+169,480	0.7%

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

Insider transactions

Date	Insider	Title	Transaction	Shares	Price	Held after
1 Oct 2026	RA Capital Management, L.P.		Derivative Exercise and Retained	+500	$12.80	4,503,882
23 Aug 2026	RA Capital Management, L.P.		Derivative Exercise and Retained	+1,500	$3.74	4,503,382
15 Jul 2026	RA Capital Management, L.P.		Derivative Exercise and Sale	-213	$19.75	4,501,882
15 Jul 2026	RA Capital Management, L.P.		Derivative Exercise and Retained	+2,099,787	$0.00	4,501,882
6 Jul 2026	David Zaccardelli	Director	Other Derivative Acquisition	+42,658	$20.10	42,658
10 Jun 2026	RA Capital Management, L.P.		Other Derivative Acquisition	+57,162	$14.09	57,162
10 Jun 2026	Michel Detheux	Director	Other Derivative Acquisition	+57,162	$14.09	57,162
10 Jun 2026	Sabretooth Capital Management, LLC		Other Derivative Acquisition	+57,162	$14.09	57,162
10 Jun 2026	Daniella Beckman	Independent Director	Other Derivative Acquisition	+53,283	$14.09	53,283
10 Jun 2026	Andrew Levin	Director	Other Derivative Acquisition	+57,162	$14.09	57,162
10 Jun 2026	Alexander Cumbo	Director	Other Derivative Acquisition	+56,345	$14.09	56,345
10 Jun 2026	Fouad Namouni	Director	Other Derivative Acquisition	+56,549	$14.09	56,549
10 Jun 2026	Wouter Sebastian Joustra	Director	Other Derivative Acquisition	+57,162	$14.09	57,162
21 Apr 2026	RA Capital Management, L.P.		Open Market Disposition	-165,150	$15.77	2,402,095
19 Apr 2026	RA Capital Management, L.P.		Open Market Disposition	-630,374	$16.28	2,567,245
14 Apr 2026	RA Capital Management, L.P.		Open Market Disposition	-737,989	$16.15	3,197,619
9 Apr 2026	RA Capital Management, L.P.		Open Market Disposition	-484,932	$16.91	3,935,608
8 Apr 2026	RA Capital Management, L.P.		Private Disposition	-135,201	$16.59	3,935,608
5 Apr 2026	RA Capital Management, L.P.		Open Market Disposition	-849,257	$19.06	4,555,741
31 Mar 2026	Jeremy Sokolove	Chief Medical Officer	Initial Statement of Beneficial	+0	–	27,900

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	7,904,520	13.4%	11.1
31 Aug 2026	7,666,676	13.0%	10.4
14 Aug 2026	7,350,765	12.4%	9.8
31 Jul 2026	7,251,707	13.4%	8.3
15 Jul 2026	7,289,116	13.5%	4.4
30 Jun 2026	7,743,558	14.3%	3.8

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