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Compare stocks with our powerful stock comparison tool. Analyze fundamentals, price performance, and key financial indicators to make informed investment decisions. Our tool lets you compare up to ten stocks side by side based on Performance Charts, Price & Volume, MarketRank™, Analyst Ratings, Sales & Book Value, Profitability & Earnings, Dividends, Debt, Ownership, Headlines, and more. Simply enter up to ten stock symbols (e.g., BAC, JPM, WFC, C, GS) to get started and uncover top investment opportunities.

CompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's Volume
BioLargo, Inc. stock logo
BLGO
BioLargo
$0.15
-2.3%
$0.16
$0.14
$0.26
$48.54M-0.09254,820 shs420,931 shs
Stardust Power Inc. stock logo
SDST
Stardust Power
$2.49
+6.0%
$2.82
$1.42
$8.43
$23.42M0.56284,355 shs247,806 shs
TOMI Environmental Solutions, Inc. stock logo
TOMZ
TOMI Environmental Solutions
$0.66
-3.9%
$0.63
$0.50
$1.20
$14.05M1.771.38 million shs125,169 shs
Zentek Ltd. stock logo
ZTEK
Zentek
$0.66
+34.1%
$0.56
$0.40
$1.74
$53.09M0.33121,019 shs478,748 shs
7 Stocks to Buy And Hold Forever Cover

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Compare Price Performance

Company1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year Performance
BioLargo, Inc. stock logo
BLGO
BioLargo
+0.59%-0.90%+2.74%-9.86%-29.18%
Stardust Power Inc. stock logo
SDST
Stardust Power
-13.60%-11.65%-13.92%-38.64%-51.78%
TOMI Environmental Solutions, Inc. stock logo
TOMZ
TOMI Environmental Solutions
-0.84%+3.53%+14.13%-7.44%-14.10%
Zentek Ltd. stock logo
ZTEK
Zentek
-3.20%+9.64%-8.49%-23.82%-71.87%
CompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's Volume
BioLargo, Inc. stock logo
BLGO
BioLargo
$0.15
-2.3%
$0.16
$0.14
$0.26
$48.54M-0.09254,820 shs420,931 shs
Stardust Power Inc. stock logo
SDST
Stardust Power
$2.49
+6.0%
$2.82
$1.42
$8.43
$23.42M0.56284,355 shs247,806 shs
TOMI Environmental Solutions, Inc. stock logo
TOMZ
TOMI Environmental Solutions
$0.66
-3.9%
$0.63
$0.50
$1.20
$14.05M1.771.38 million shs125,169 shs
Zentek Ltd. stock logo
ZTEK
Zentek
$0.66
+34.1%
$0.56
$0.40
$1.74
$53.09M0.33121,019 shs478,748 shs
7 Stocks to Buy And Hold Forever Cover

Click the link to see MarketBeat's list of seven stocks and why their long-term outlooks are very promising.

Get This Free Report

Compare Price Performance

Company1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year Performance
BioLargo, Inc. stock logo
BLGO
BioLargo
+0.59%-0.90%+2.74%-9.86%-29.18%
Stardust Power Inc. stock logo
SDST
Stardust Power
-13.60%-11.65%-13.92%-38.64%-51.78%
TOMI Environmental Solutions, Inc. stock logo
TOMZ
TOMI Environmental Solutions
-0.84%+3.53%+14.13%-7.44%-14.10%
Zentek Ltd. stock logo
ZTEK
Zentek
-3.20%+9.64%-8.49%-23.82%-71.87%
CompanyConsensus Rating ScoreConsensus RatingConsensus Price Target% Upside from Current Price
BioLargo, Inc. stock logo
BLGO
BioLargo
0.00
N/AN/AN/A
Stardust Power Inc. stock logo
SDST
Stardust Power
1.50
ReduceN/AN/A
TOMI Environmental Solutions, Inc. stock logo
TOMZ
TOMI Environmental Solutions
1.50
ReduceN/AN/A
Zentek Ltd. stock logo
ZTEK
Zentek
1.00
SellN/AN/A

Current Analyst Ratings Breakdown

Latest TOMZ, ZTEK, BLGO, and SDST Analyst Ratings

DateCompanyBrokerageActionRatingPrice TargetDetails
4/21/2026
Stardust Power Inc. stock logo
SDST
Stardust Power
Reiterated RatingSell (E+)
4/20/2026
Zentek Ltd. stock logo
ZTEK
Zentek
Reiterated RatingSell (E+)
(Data available from 5/6/2023 forward. View 10+ years of historical ratings with our analyst ratings screener.)
CompanyAnnual RevenuePrice/SalesCashflowPrice/CashBook ValuePrice/Book
BioLargo, Inc. stock logo
BLGO
BioLargo
$12.23M3.97N/AN/A$0.01 per share15.20
Stardust Power Inc. stock logo
SDST
Stardust Power
N/AN/AN/AN/A($0.59) per shareN/A
TOMI Environmental Solutions, Inc. stock logo
TOMZ
TOMI Environmental Solutions
$5.64M2.39N/AN/A$0.03 per share21.91
Zentek Ltd. stock logo
ZTEK
Zentek
$942.88K75.49N/AN/A$0.10 per share6.60
CompanyNet IncomeEPSTrailing P/E RatioForward P/E RatioP/E GrowthNet MarginsReturn on Equity (ROE)Return on Assets (ROA)Next Earnings Date
BioLargo, Inc. stock logo
BLGO
BioLargo
-$3.50M-$0.03N/AN/AN/A-11.45%-39.90%-22.06%N/A
Stardust Power Inc. stock logo
SDST
Stardust Power
-$15.72M-$2.17N/AN/AN/AN/AN/A-121.41%5/13/2026 (Estimated)
TOMI Environmental Solutions, Inc. stock logo
TOMZ
TOMI Environmental Solutions
-$3.75M-$0.18N/A10.96N/A-66.53%-161.42%-44.76%5/14/2026 (Estimated)
Zentek Ltd. stock logo
ZTEK
Zentek
-$7.22M-$0.05N/AN/AN/A-875.49%-60.84%-45.12%7/1/2026 (Estimated)

Latest TOMZ, ZTEK, BLGO, and SDST Earnings

DateQuarterCompanyConsensus EstimateReported EPSBeat/MissGap EPSRevenue EstimateActual RevenueDetails
5/14/2026Q1 2026
TOMI Environmental Solutions, Inc. stock logo
TOMZ
TOMI Environmental Solutions
-$0.04N/AN/AN/A$1.69 millionN/A
5/13/2026Q1 2026
Stardust Power Inc. stock logo
SDST
Stardust Power
-$0.39N/AN/AN/A$1.00 millionN/A
3/31/2026Q4 2025
TOMI Environmental Solutions, Inc. stock logo
TOMZ
TOMI Environmental Solutions
-$0.02-$0.09-$0.07-$0.09$2.31 million$1.02 million
3/25/2026Q4 2025
Stardust Power Inc. stock logo
SDST
Stardust Power
-$0.4550-$0.34+$0.1150-$0.34$0.67 millionN/A
2/17/2026Q3 2026
Zentek Ltd. stock logo
ZTEK
Zentek
N/A-$0.01N/A-$0.01N/A$0.05 million
CompanyAnnual PayoutDividend Yield5-Year Annualized Dividend GrowthPayout RatioYears of Consecutive Growth
BioLargo, Inc. stock logo
BLGO
BioLargo
N/AN/AN/AN/AN/A
Stardust Power Inc. stock logo
SDST
Stardust Power
N/AN/AN/AN/AN/A
TOMI Environmental Solutions, Inc. stock logo
TOMZ
TOMI Environmental Solutions
N/AN/AN/AN/AN/A
Zentek Ltd. stock logo
ZTEK
Zentek
N/AN/AN/AN/AN/A
CompanyDebt-to-Equity RatioCurrent RatioQuick Ratio
BioLargo, Inc. stock logo
BLGO
BioLargo
0.03
2.31
2.24
Stardust Power Inc. stock logo
SDST
Stardust Power
N/A
0.29
0.29
TOMI Environmental Solutions, Inc. stock logo
TOMZ
TOMI Environmental Solutions
4.95
1.32
0.40
Zentek Ltd. stock logo
ZTEK
Zentek
0.14
1.00
0.74

Institutional Ownership

CompanyInstitutional Ownership
BioLargo, Inc. stock logo
BLGO
BioLargo
0.04%
Stardust Power Inc. stock logo
SDST
Stardust Power
32.79%
TOMI Environmental Solutions, Inc. stock logo
TOMZ
TOMI Environmental Solutions
4.77%
Zentek Ltd. stock logo
ZTEK
Zentek
0.77%

Insider Ownership

CompanyInsider Ownership
BioLargo, Inc. stock logo
BLGO
BioLargo
19.30%
Stardust Power Inc. stock logo
SDST
Stardust Power
55.30%
TOMI Environmental Solutions, Inc. stock logo
TOMZ
TOMI Environmental Solutions
23.50%
Zentek Ltd. stock logo
ZTEK
Zentek
N/A
CompanyEmployeesShares OutstandingFree FloatOptionable
BioLargo, Inc. stock logo
BLGO
BioLargo
30319.36 million240.17 millionNot Optionable
Stardust Power Inc. stock logo
SDST
Stardust Power
N/A9.97 million4.46 millionN/A
TOMI Environmental Solutions, Inc. stock logo
TOMZ
TOMI Environmental Solutions
2020.54 million15.71 millionNot Optionable
Zentek Ltd. stock logo
ZTEK
Zentek
24107.84 millionN/ANot Optionable

Recent News About These Companies

Zentek Ltd. (NASDAQ:ZTEK) Short Interest Update
Zentek Ltd.: Zentek Provides Strategic and Regulatory Update
Zentek Provides Strategic and Regulatory Update

New MarketBeat Followers Over Time

Media Sentiment Over Time

BioLargo stock logo

BioLargo NASDAQ:BLGO

$0.15 0.00 (-2.31%)
As of 03:59 PM Eastern

BioLargo, Inc. invents, develops, and commercializes various platform technologies. Its technologies solve challenging environmental problems comprising per - and polyfluoroalkyl substances (PFAS) water contamination, advanced water and wastewater treatment, industrial odor and volatile organic compounds control, air quality control, infection control, and myriad environmental remediation. The company provides full-service environmental engineering services. BioLargo, Inc. was incorporated in 1991 and is based in Westminster, California.

Stardust Power stock logo

Stardust Power NASDAQ:SDST

$2.49 +0.14 (+5.96%)
Closing price 04:00 PM Eastern
Extended Trading
$2.54 +0.05 (+2.21%)
As of 07:21 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.

Stardust Power Inc. is a vertically-integrated lithium refinery that engages in producing battery-grade lithium. The company was founded in 2022 and is based in Greenwich, Connecticut.

TOMI Environmental Solutions stock logo

TOMI Environmental Solutions NASDAQ:TOMZ

$0.66 -0.03 (-3.92%)
Closing price 04:00 PM Eastern
Extended Trading
$0.63 -0.03 (-4.62%)
As of 07:25 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.

TOMI Environmental Solutions, Inc., a bacteria decontamination and infectious disease control company, engages in the provision of environmental solutions for indoor air and surface disinfection and decontamination in the United States and internationally. The company's disinfection solutions include SteraPak portable disinfection systems, SteraMist select surface units, SteraMist environment systems, SteraMist total disinfection carts, SteraMist transport units, NV+ fogging disinfection and decontamination systems, SteraMist custom engineered systems, SteraMist Hybrid disinfection systems, SteraMist integrated systems, Stainless Steel 90-Degree applicators, SteraMist plasma decontamination chambers, and iHP Corporate Service Decontamination, which provides full room, equipment, facility, and emergency disinfection and decontamination services. It also manufactures, sells, services, and licenses SteraMist Binary Ionization Technology, a hydrogen peroxide-based mist and fog. The company's products and services are used in hospitals and medical facilities, bio-safety labs, pharmaceutical facilities, meat and produce processing facilities, universities and research facilities, vivarium labs, and other service industries, including cruise ships, office buildings, hotel and motel rooms, schools, restaurants, military barracks, police and fire departments, prisons, and athletic facilities; and single-family homes and multi-unit residences. TOMI Environmental Solutions, Inc. was incorporated in 1979 and is headquartered in Frederick, Maryland.

Zentek stock logo

Zentek NASDAQ:ZTEK

$0.66 +0.17 (+34.06%)
Closing price 04:00 PM Eastern
Extended Trading
$0.58 -0.08 (-12.42%)
As of 07:22 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.

Zentek Ltd., together with its subsidiaries, engages in the research and development of graphene and related nanomaterials in Canada. The company develops graphene-based antimicrobial coating under the ZenGUARD brand, surgical masks, HVAC filters, personal protective equipment, rapid detection point of care diagnostics tests, and pharmaceutical products based on graphene-based compounds. It is also developing graphene oxide synthesis and graphene synthesis. In addition, the company owns 100% interest in the Albany graphite project located in Northern Ontario, Canada. The company was formerly known as ZEN Graphene Solutions Ltd. and changed its name to Zentek Ltd. in October 2021. Zentek Ltd. was incorporated in 2008 and is headquartered in Guelph, Canada.