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Stocks to Compare Sections All Sections Selected Performance Chart Price & Volume MarketRank Analyst Ratings Sales & Book Value Profitability & Earnings Dividends Debt Ownership Miscellaneous Headlines About Compare NYSE:GPLOTCMKTS:QTMMOTCMKTS:QTRRFNYSEAMERICAN:SMTS On This Page Performance ChartPrice & VolumeMarketRank™Analyst RatingsSales & Book ValueProfitability & EarningsDividendsDebtOwnershipMiscellaneousHeadlinesAbout Comparison Ideas Stock Ideas Comparative Price Performance Over Time1 day7 days30 days90 days365 daysCompare Price & VolumeCompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's VolumeGPLGreat Panther Mining$0.19$0.19▼$5.10$8.84MN/A506,038 shs1.70 million shsQTMMQuantum Materials$0.04$0.04$0.01▼$0.20$28.18M2.991.60 million shsN/AQTRRFQuaterra Resources$0.12+1.7%$0.11$0.04▼$0.25$35.19M1.29218,964 shs95,577 shsSMTSSierra Metals$0.00$0.16▼$1.84$32.70M1.05413,899 shs625,400 shsThe 10 Best AI Stocks to Own in 2025Wondering where to start (or end) with AI stocks? These 10 simple stocks can help investors build long-term wealth as artificial intelligence continues to grow into the future.Get This Free ReportCompare Price PerformanceCompany1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year PerformanceGPLGreat Panther Mining0.00%0.00%0.00%0.00%0.00%QTMMQuantum Materials0.00%0.00%0.00%0.00%0.00%QTRRFQuaterra Resources0.00%-4.00%+4.35%+26.32%+97.09%SMTSSierra Metals0.00%0.00%0.00%0.00%0.00%Compare MarketRank™CompanyOverall ScoreAnalyst's OpinionShort Interest ScoreDividend StrengthESG ScoreNews and Social Media SentimentCompany OwnershipEarnings & ValuationGPLGreat Panther MiningN/AN/AN/AN/AN/AN/AN/AN/AQTMMQuantum MaterialsN/AN/AN/AN/AN/AN/AN/AN/AQTRRFQuaterra ResourcesN/AN/AN/AN/AN/AN/AN/AN/ASMTSSierra MetalsN/AN/AN/AN/AN/AN/AN/AN/ACompare Analyst ForecastsCompanyConsensus Rating ScoreConsensus RatingConsensus Price Target% Upside from Current PriceGPLGreat Panther Mining 0.00N/AN/AN/AQTMMQuantum Materials 0.00N/AN/AN/AQTRRFQuaterra Resources 0.00N/AN/AN/ASMTSSierra Metals 0.00N/AN/AN/ACompare Sales & Book ValueCompanyAnnual RevenuePrice/SalesCashflowPrice/CashBook ValuePrice/BookGPLGreat Panther MiningN/AN/AN/AN/AN/AN/AQTMMQuantum MaterialsN/AN/AN/AN/AN/AN/AQTRRFQuaterra ResourcesN/AN/AN/AN/A$0.13 per shareN/ASMTSSierra Metals$272.01M0.00N/A0.51$1.25 per share0.00Compare Profitability & EarningsCompanyNet IncomeEPSTrailing P/E RatioForward P/E RatioP/E GrowthNet MarginsReturn on Equity (ROE)Return on Assets (ROA)Next Earnings DateGPLGreat Panther MiningN/AN/A0.00N/AN/AN/AN/AN/AN/AQTMMQuantum Materials-$8.96MN/A0.00∞N/AN/AN/AN/AN/AQTRRFQuaterra Resources-$980KN/A0.00∞N/AN/A-6.27%-6.15%N/ASMTSSierra Metals-$27.36M-$0.33N/AN/AN/A-23.65%-1.56%-0.83%N/ACompare DividendsCompanyAnnual PayoutDividend Yield3-Year Dividend GrowthPayout RatioYears of Consecutive GrowthGPLGreat Panther MiningN/AN/AN/AN/AN/AQTMMQuantum MaterialsN/AN/AN/AN/AN/AQTRRFQuaterra ResourcesN/AN/AN/AN/AN/ASMTSSierra Metals$0.0315.04%N/AN/A N/ACompare DebtCompanyDebt-to-Equity RatioCurrent RatioQuick RatioGPLGreat Panther MiningN/AN/AN/AQTMMQuantum MaterialsN/AN/AN/AQTRRFQuaterra ResourcesN/A1.031.03SMTSSierra Metals0.290.930.64Compare OwnershipInstitutional OwnershipCompanyInstitutional OwnershipGPLGreat Panther MiningN/AQTMMQuantum Materials0.08%QTRRFQuaterra ResourcesN/ASMTSSierra Metals54.24%Insider OwnershipCompanyInsider OwnershipGPLGreat Panther MiningN/AQTMMQuantum Materials12.78%QTRRFQuaterra ResourcesN/ASMTSSierra MetalsN/ACompare Miscellaneous StatsCompanyEmployeesShares OutstandingFree FloatOptionableGPLGreat Panther MiningN/A47.31 millionN/AOptionableQTMMQuantum Materials4704.57 millionN/ANot OptionableQTRRFQuaterra ResourcesN/A293.27 millionN/ANot OptionableSMTSSierra Metals1,440163.90 millionN/ANot OptionableGPL, QTRRF, SMTS, and QTMM HeadlinesRecent News About These CompaniesSierra Metals Reminds Shareholders of Impending Deadline to Tender Shares to Alpayana OfferMay 21, 2025 | financialpost.comFArias Resource Capital Fund II L.P. and Arias Resource Capital Fund II (Mexico) L.P. Sale of Common Shares of Sierra Metals Inc.May 15, 2025 | financialpost.comFXIB ASSET MANAGEMENT CONFIRMS CONTROL OVER SECURITIES OF SIERRA METALS INC.May 8, 2025 | finance.yahoo.comSierra Metals Responds to Alpayana’s Increased Offer; Makes No Recommendation to ShareholdersMay 6, 2025 | financialpost.comFSierra Metals Acknowledges Receipt of Amended BidMay 2, 2025 | financialpost.comFSierra Metals Subsidiary in Peru, Sociedad Minera Corona Reports Q1 2025 Financial ResultsApril 30, 2025 | financialpost.comFSierra Metals Shares Jump After Takeover Deal With AlpayanaApril 23, 2025 | marketwatch.comSierra Metals agrees to Alpayana's C$1.15/share takeover offerApril 23, 2025 | msn.comSierra Metals and Alpayana Reach Agreement in Principle for CDN $1.15 All-Cash Supported Take-Over Bid and Extends OfferApril 23, 2025 | financialpost.comFSierra Metals Reports First Quarter 2025 Production ResultsApril 16, 2025 | juniorminingnetwork.comSierra Metals: The Hostile Takeover AttemptApril 6, 2025 | thedeepdive.caTAlpayana ups Sierra bidApril 4, 2025 | mining-journal.comMSierra Metals Responds to Alpayana’s Revised Takeover BidApril 3, 2025 | tipranks.comSierra Metals Subsidiary in Peru, Sociedad Minera Corona Reports Q4 2024 Financial ResultsFebruary 18, 2025 | financialpost.comFSierra Metals Subsidiary in Peru, Sociedad Minera Corona Reports Q4 2024 Financial ResultsFebruary 18, 2025 | finance.yahoo.comSierra Metals Provides Update on Shareholder Rights PlanJanuary 22, 2025 | financialpost.comFSierra Metals Provides Update on Shareholder Rights PlanJanuary 22, 2025 | financialpost.comFSierra Metals rejects Alpayana's hostile C$0.85/share takeover offerJanuary 14, 2025 | msn.comSierra Metals Adopts Poison Pill Plan as Peruvian Company CirclesDecember 30, 2024 | marketwatch.comSierra Metals Adopts Shareholder Rights PlanDecember 30, 2024 | financialpost.comFMedia Sentiment Over TimeGPL, QTRRF, SMTS, and QTMM Company DescriptionsGreat Panther Mining NYSE:GPLGreat Panther is a growing gold and silver producer focused on the Americas. The Company owns a diversified portfolio of assets in Brazil , Mexico and Peru that includes three operating gold and silver mines, four exploration projects, and an advanced development project. Great Panther is actively exploring large land packages in highly prospective districts and is pursuing acquisition opportunities to complement its existing portfolio.Quantum Materials OTCMKTS:QTMM$0.04 0.00 (0.00%) As of 07/27/2021Quantum Materials Corp. engages in the design, development, production and supply of nanomaterials, including quantum dots, tetrapod quantum dots, and other nanoparticles for a range of applications in televisions, displays and other optoelectronics, photovoltaics, solid state lighting, life sciences, security ink, battery, and sensor sectors of the market. The company was founded by Stephen Squires on January 9, 2007 and is headquartered in San Marcos, TX.Quaterra Resources OTCMKTS:QTRRF$0.12 +0.00 (+1.69%) As of 06/27/2025Quaterra Resources, Inc. engages in the acquisition, exploration, and development of mineral properties. It holds interest in the Groundhog and Quaterra's Yerington Copper projects. The company was founded on May 11, 1993 and is headquartered in Vancouver, Canada.Sierra Metals NYSEAMERICAN:SMTSSierra Metals Inc., together with its subsidiaries, focuses on the production, exploration, and development of precious and base metals in Peru and Mexico. It primarily focuses on exploration of silver, copper, lead, zinc, and gold deposits. The company's flagship property is the 81.84% owned polymetallic Yauricocha Mine covering an area of 18,778 hectares located in the Yauyos province in Peru. It also holds 100% interest in the Bolivar mine, comprising of 12 mining concessions covering an area 15,217 hectares; and Cusi Mines that comprises of 73 concessions covering 11,977 hectares in Mexico. The company was formerly known as Dia Bras Exploration Inc. and changed its name to Sierra Metals Inc. in December 2012. Sierra Metals Inc. was incorporated in 1996 and is headquartered in Toronto, Canada. 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