NVRI · Enviri Corp

$20.90 +0.31 (+1.51%) At close · Aug 17

Customer concentration — top 5 customers 54% of revenue

5 customers — 54% of revenue (the year ended December 31, 2025)

“For the year ended December 31, 2025, the Company's top five customers in Rail accounted for approximately 54% of revenues in that Segment and 6% of the Company's consolidated revenues.”

5 customers — 37% of revenue (the year ended December 31, 2025)

“For the year ended December 31, 2025, the Company's top five customers in HE accounted for approximately 37% of revenues in that Segment and 17% of the Company's consolidated revenues.”

5 customers — 27% of revenue (the year ended December 31, 2025)

“For the year ended December 31, 2025, the Company's top five customers in CE accounted for approximately 27% of the revenues in that Segment and 12% of the Company's consolidated revenues.”

5 customers — 17% of revenue (the year ended December 31, 2025)

“For the year ended December 31, 2025, the Company's top five customers in HE accounted for approximately 37% of revenues in that Segment and 17% of the Company's consolidated revenues.”

5 customers — 12% of revenue (the year ended December 31, 2025)

“For the year ended December 31, 2025, the Company's top five customers in CE accounted for approximately 27% of the revenues in that Segment and 12% of the Company's consolidated revenues.”

One customer — 10% of revenue (2025, 2024, and 2023)

“In 2025, 2024, and 2023, CE had one customer that provided in excess of 10% of its revenue.”

2 customers — 10% of revenue (2025 and 2024)

“In 2025 and 2024, Rail had two customers that provided more than 10% of the segment total revenues and, in 2023, Rail had one customer that provided more than 10% of the segment total revenues.”

One customer — 10% of revenue (2025, 2024 and 2023)

“In 2025, 2024 and 2023, HE had one customer that provided in excess of 10% of its revenues under multiple long-term contracts at several mill sites.”

5 customers — 6% of revenue (the year ended December 31, 2025)

“For the year ended December 31, 2025, the Company's top five customers in Rail accounted for approximately 54% of revenues in that Segment and 6% of the Company's consolidated revenues.”

One customer — 10% of revenue (each of the past three years)

“HE had one customer in each of the past three years that provided more than 10% of this segment's revenues, again under many long-term contracts at multiple sites.”

View the 10-K filed Feb 24, 2026

Market Cap

$580.43M

28.19M

Options Chain

Underlying $20.90 · today Options Calculator

Positioning

Aug 21, 2026 · 3 days to expiry · 14 contracts · mixed snapshot sessions · Jul 27, 2026–Aug 14, 2026; 7 unknown

Put / call OI

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dated and unknown snapshot sessions

Open interest

—

dated and unknown snapshot sessions

Volume

—

dated and unknown snapshot sessions

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 3d Sep 18 31d Oct 16 59d Dec 18 122d Jan 15 150d Apr 16 241d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	247.5%	0.984	—		$0.05	—	—	2	2
Call · $12.5 In the money Snapshot session Unknown Last — Breakeven — Implied vol 247.5% Delta 0.984 ≈98% ITM Gamma 0.007 Theta -0.029 Vega 0.001 Open interest 0 Model this call Put · $12.5 Snapshot session Aug 11, 2026 Last $0.05 Breakeven $12.45 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $15 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $15 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	184.7%	0.847	—		—	-0.166	197.4%	—	0
Call · $17.5 In the money Snapshot session Unknown Last — Breakeven — Implied vol 184.7% Delta 0.847 ≈85% ITM Gamma 0.059 Theta -0.122 Vega 0.005 Open interest 0 Model this call Put · $17.5 Snapshot session Unknown Last — Breakeven — Implied vol 197.4% Delta -0.166 ≈17% ITM Gamma 0.058 Theta -0.136 Vega 0.005 Open interest 0 Model this put
101	101	—	—	$0.75		$0.40	-0.306	93.9%	1	10
Call · $20 In the money Snapshot session Aug 12, 2026 Last $0.75 Breakeven $20.75 Implied vol — Delta — Gamma — Theta — Vega — Open interest 101 Model this call Put · $20 Snapshot session Jul 27, 2026 Last $0.40 Breakeven $19.60 Implied vol 93.9% Delta -0.306 ≈31% ITM Gamma 0.174 Theta -0.091 Vega 0.007 Open interest 10 Model this put
Underlying $20.90
258	1	72.8%	0.178	$0.10		$0.90	-0.737	102.8%	2	0
Call · $22.5 Snapshot session Aug 14, 2026 Last $0.10 Breakeven $22.60 Implied vol 72.8% Delta 0.178 ≈18% ITM Gamma 0.165 Theta -0.053 Vega 0.006 Open interest 258 Model this call Put · $22.5 In the money Snapshot session Aug 7, 2026 Last $0.90 Breakeven $21.60 Implied vol 102.8% Delta -0.737 ≈74% ITM Gamma 0.148 Theta -0.092 Vega 0.008 Open interest 0 Model this put
1	1	192.1%	0.215	$0.50		—	-0.906	124.9%	—	0
Call · $25 Snapshot session Aug 5, 2026 Last $0.50 Breakeven $25.50 Implied vol 192.1% Delta 0.215 ≈22% ITM Gamma 0.07 Theta -0.156 Vega 0.006 Open interest 1 Model this call Put · $25 In the money Snapshot session Unknown Last — Breakeven — Implied vol 124.9% Delta -0.906 ≈91% ITM Gamma 0.062 Theta -0.056 Vega 0.004 Open interest 0 Model this put
1	1	289%	0.147	$0.10		—	-0.938	211.2%	—	0
Call · $30 Snapshot session Aug 10, 2026 Last $0.10 Breakeven $30.10 Implied vol 289% Delta 0.147 ≈15% ITM Gamma 0.037 Theta -0.184 Vega 0.005 Open interest 1 Model this call Put · $30 In the money Snapshot session Unknown Last — Breakeven — Implied vol 211.2% Delta -0.938 ≈94% ITM Gamma 0.027 Theta -0.069 Vega 0.003 Open interest 0 Model this put

About this data

Each contract's last price, volume, greeks, implied volatility and open interest belongs to the snapshot session shown in its details; unknown means the provider omitted the timestamp. This chain has mixed snapshot sessions · Jul 27, 2026–Aug 14, 2026; 7 unknown. Cross-contract positioning totals are shown only when every returned row has the same known session. Bid and ask are not included on this plan.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown.

Key facts CIK 2104052 CUSIP 29390K102 13F (30d) 144 filings 141 filers Visit website