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Enviri Corporation NVRI

US equityMarket cap rank #3668Waste Management

$19.63 −$0.04 (-0.18%)

Market open · Oct 8, 10:00 am ET · After hours $19.66 0.00%

Open$19.79

Prev close$19.66

Day range$19.53 – $19.90

Volume11.1K

Market cap$553.23M

P/E (TTM)–

Dividend yield–

Ownership & positioning

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

Institutional ownership95.4%-2.78 pts vs. prior quarter

Institutions holding187-6 vs. prior quarter

Insider trades (recent)18 buys / 32 sellsNet selling

Short interest11.71% of floatDays to cover 12.0 · as of 15 Sep 2026

Short-sale volume share20.5%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: −$966.6K (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 32.2% of shares outstanding.

Largest holders

Neuberger Berman Investment Advisers LLC7.60%
BlackRock7.41%
Mason Capital Management LLC6.30%
D. E. Shaw & Co., L.P.5.91%
The Goldman Sachs Group, Inc.4.98%
Vanguard Capital Management, LLC4.66%
TPG Capital, L.P.4.14%
Simcoe Capital Management, LLC4.09%

By investor type

Mutual Fund41.85%
Hedge Fund30.57%
Public Company10.11%
VC/PE Fund6.62%
Private Company4.24%
Government Pension Fund1.00%
Individual/Insider0.96%
Family Office/Trust0.76%

Reported short interest has risen from 9.75% to 11.71% 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
Nuveen Asset Management LLC	Insurance Company	2026/Q3	+55,754	0.2%
Simcoe Capital Management, LLC	Hedge Fund	2026/Q3	+1,149,090	4.1%
The Goldman Sachs Group, Inc.	Public Company	2026/Q3	+683,703	5.0%
One Fin Capital Management LP	Hedge Fund	2026/Q3	+455,553	1.6%
Qube Research & Technologies Ltd	Mutual Fund	2026/Q3	+336,467	1.8%
Susquehanna International Group, LLP	Private Company	2026/Q3	+250,819	1.5%
Jane Street Group, LLC	Private Company	2026/Q3	+242,238	0.9%
Millennium Management LLC	Hedge Fund	2026/Q3	+230,092	3.1%
FMR	Mutual Fund	2026/Q3	+217,410	0.8%
Lingotto Investment Management LLP	Family Office/Trust	2026/Q3	+212,657	0.8%
PanAgora Asset Management, Inc.	Mutual Fund	2026/Q3	+204,495	0.7%
Shay Capital LLC	Hedge Fund	2026/Q3	+134,500	0.7%
ING Groep N.V.	Public Company	2026/Q3	+66,666	0.2%
Kintayl Capital LP	Hedge Fund	2026/Q3	+55,281	0.2%
Russell Investment Management, LLC	Mutual Fund	2026/Q3	+53,066	0.2%

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

Insider transactions

Date	Insider	Title	Transaction	Shares	Price	Held after
14 Jun 2026	John Quinn	Independent Director	Other Acquisition	+6,250	–	6,250
14 Jun 2026	John Quinn	Independent Director	Other Derivative Acquisition	+3,155	–	3,155
14 Jun 2026	James Earl	Independent Director	Other Acquisition	+6,250	–	6,250
14 Jun 2026	Nicholas Fanandakis	Independent Director	Other Acquisition	+6,250	–	6,250
14 Jun 2026	Russell Hochman	Senior VP, General Counsel, Chief Compliance Officer & Corporate Secretary	Other Acquisition	+144,231	–	144,231
14 Jun 2026	Russell Hochman	Senior VP, General Counsel, Chief Compliance Officer & Corporate Secretary	Other Derivative Acquisition	+136,447	$17.04	26,519
14 Jun 2026	Russell Hochman	Senior VP, General Counsel, Chief Compliance Officer & Corporate Secretary	Other Derivative Acquisition	+144,231	–	144,231
14 Jun 2026	Samuel Fenice	Officer	Other Acquisition	+9,027	–	9,027
14 Jun 2026	Samuel Fenice	Officer	Other Derivative Acquisition	+4,808	–	4,808
14 Jun 2026	Rebecca O’Mara	Independent Director	Other Acquisition	+6,250	–	6,250
14 Jun 2026	Gary Lada	President of Harsco Rail	Other Acquisition	+17,500	–	17,500
14 Jun 2026	Gary Lada	President of Harsco Rail	Other Derivative Acquisition	+9,616	–	9,616
14 Jun 2026	Gary Lada	President of Harsco Rail	Other Derivative Acquisition	+11,283	$6.21	11,283
14 Jun 2026	Samuel Romaninsky	VP, General Counsel & Chief Compliance Officer	Other Acquisition	+22,212	–	22,212
14 Jun 2026	Samuel Romaninsky	VP, General Counsel & Chief Compliance Officer	Other Derivative Acquisition	+9,616	–	9,616
31 May 2026	John Quinn	Independent Director	Sale to Issuer	-40,140	–	–
31 May 2026	James Earl	Independent Director	Sale to Issuer	-130,552	–	–
31 May 2026	F. Grasberger	Chairperson & CEO	Sale to Issuer	-1,677,852	–	–
31 May 2026	F. Grasberger	Chairperson & CEO	Derivative Sale to Issuer	-1,440,233	–	–
31 May 2026	Nicholas Fanandakis	Independent Director	Sale to Issuer	-18,309	–	–

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	3,302,124	11.7%	12.0
31 Aug 2026	2,972,489	10.5%	8.4
14 Aug 2026	2,874,796	10.2%	6.8
31 Jul 2026	2,421,557	8.6%	5.7
15 Jul 2026	2,721,320	9.7%	6.0
30 Jun 2026	2,739,647	9.7%	6.4

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