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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:ATNM NASDAQ:CUE NASDAQ:PEPG NASDAQ:SPRO 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 VolumeATNMActinium Pharmaceuticals$0.99$1.16$0.94▼$1.89$31.06M-0.06151,738 shs123,470 shsCUECue Biopharma$30.43+19.9%$71.85$4.97▼$41.42$106.65M2.5176,983 shs163,488 shsPEPGPepGen$1.78+4.7%$1.60$1.01▼$7.80$117.59M1.93614,616 shs375,006 shsSPROSpero Therapeutics$2.26$2.62$1.80▼$3.22$130.86M1.451.80 million shs517,901 shs7 Stocks to Buy And Hold ForeverClick the link to see MarketBeat's list of seven stocks and why their long-term outlooks are very promising. Get This Free ReportCompare Price PerformanceCompany1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year PerformanceATNMActinium Pharmaceuticals0.00%-3.88%-21.43%0.00%-30.28%CUECue Biopharma0.00%-11.24%+15.94%-87.52%-96.19%PEPGPepGen0.00%-5.03%+13.33%-59.81%+47.83%SPROSpero Therapeutics0.00%-0.88%-20.14%+0.89%-23.13%Compare Price & VolumeCompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's VolumeATNMActinium Pharmaceuticals$0.99$1.16$0.94▼$1.89$31.06M-0.06151,738 shs123,470 shsCUECue Biopharma$30.43+19.9%$71.85$4.97▼$41.42$106.65M2.5176,983 shs163,488 shsPEPGPepGen$1.78+4.7%$1.60$1.01▼$7.80$117.59M1.93614,616 shs375,006 shsSPROSpero Therapeutics$2.26$2.62$1.80▼$3.22$130.86M1.451.80 million shs517,901 shs7 Stocks to Buy And Hold ForeverClick the link to see MarketBeat's list of seven stocks and why their long-term outlooks are very promising. Get This Free ReportCompare Price PerformanceCompany1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year PerformanceATNMActinium Pharmaceuticals0.00%-3.88%-21.43%0.00%-30.28%CUECue Biopharma0.00%-11.24%+15.94%-87.52%-96.19%PEPGPepGen0.00%-5.03%+13.33%-59.81%+47.83%SPROSpero Therapeutics0.00%-0.88%-20.14%+0.89%-23.13%Compare Analyst ForecastsCompanyConsensus Rating ScoreConsensus RatingConsensus Price Target% Upside from Current PriceATNMActinium Pharmaceuticals 3.00Buy$5.00405.05% UpsideCUECue Biopharma 1.00SellN/AN/APEPGPepGen 2.71Moderate Buy$11.50546.07% UpsideSPROSpero Therapeutics 1.50ReduceN/AN/ACurrent Analyst Ratings BreakdownLatest ATNM, CUE, SPRO, and PEPG Analyst RatingsDateCompanyBrokerageActionRatingPrice TargetDetails6/16/2026PEPGPepGen Craig HallumSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingInitiated CoverageBuy$11.006/2/2026PEPGPepGen Weiss RatingsSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingDowngradeSell (D-) ➝ Sell (E+)5/21/2026PEPGPepGen HC WainwrightSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingReiterated RatingBuy5/18/2026CUECue Biopharma Weiss RatingsSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingUpgradeSell (E+) ➝ Sell (D-)5/13/2026PEPGPepGen WedbushSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingLower Price TargetOutperform$5.00 ➝ $4.004/21/2026PEPGPepGen Weiss RatingsSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingReiterated RatingSell (D-)4/21/2026SPROSpero Therapeutics Weiss RatingsSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingReiterated RatingSell (D-)3/31/2026ATNMActinium Pharmaceuticals StephensSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingReiterated RatingOverweight$5.003/31/2026PEPGPepGen WedbushSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingLower Price TargetOutperform$9.00 ➝ $5.00(Data available from 6/29/2023 forward. View 10+ years of historical ratings with our analyst ratings screener.)Compare Sales & Book ValueCompanyAnnual RevenuePrice/SalesCashflowPrice/CashBook ValuePrice/BookATNMActinium Pharmaceuticals$90K345.13N/AN/A$1.31 per share0.76CUECue Biopharma$27.47M4.65N/AN/A$10.08 per share3.02PEPGPepGenN/AN/AN/AN/A$2.14 per shareN/ASPROSpero Therapeutics$66.80M1.96$0.15 per share14.85$1.05 per share2.15Compare Profitability & EarningsCompanyNet IncomeEPSTrailing P/E RatioForward P/E RatioP/E GrowthNet MarginsReturn on Equity (ROE)Return on Assets (ROA)Next Earnings DateATNMActinium Pharmaceuticals-$48.82M-$0.75N/AN/AN/AN/A-100.85%-47.89%N/ACUECue Biopharma-$26.60M-$5.58N/AN/AN/A-59.65%-98.30%-53.69%8/18/2026 (Estimated)PEPGPepGen-$89.65M-$1.75N/AN/AN/AN/A-59.89%-49.62%8/6/2026 (Estimated)SPROSpero Therapeutics$8.57M$0.249.42N/AN/A24.90%35.58%24.95%8/11/2026 (Estimated)Latest ATNM, CUE, SPRO, and PEPG EarningsDateQuarterCompanyConsensus EstimateReported EPSBeat/MissGap EPSRevenue EstimateActual RevenueDetails5/14/2026Q1 2026CUECue Biopharma-$3.30-$1.08+$2.22-$1.08$2.50 million$5.69 million5/13/2026Q1 2026SPROSpero Therapeutics-$0.18-$0.13+$0.05-$0.13$0.26 million$0.26 million5/12/2026Q1 2026PEPGPepGen-$0.31-$0.26+$0.05-$0.26N/AN/ACompare DividendsCompanyAnnual PayoutDividend Yield5-Year Annualized Dividend GrowthPayout RatioYears of Consecutive GrowthATNMActinium PharmaceuticalsN/AN/AN/AN/AN/ACUECue BiopharmaN/AN/AN/AN/AN/APEPGPepGenN/AN/AN/AN/AN/ASPROSpero TherapeuticsN/AN/AN/AN/AN/ACompare DebtCompanyDebt-to-Equity RatioCurrent RatioQuick RatioATNMActinium PharmaceuticalsN/A10.2510.25CUECue BiopharmaN/A3.573.57PEPGPepGenN/A14.9814.98SPROSpero TherapeuticsN/A10.5010.50Compare OwnershipInstitutional OwnershipCompanyInstitutional OwnershipATNMActinium Pharmaceuticals27.50%CUECue Biopharma35.04%PEPGPepGen58.01%SPROSpero Therapeutics25.60%Insider OwnershipCompanyInsider OwnershipATNMActinium Pharmaceuticals0.60%CUECue Biopharma14.56%PEPGPepGen1.30%SPROSpero Therapeutics2.90%Compare Miscellaneous StatsCompanyEmployeesShares OutstandingFree FloatOptionableATNMActinium Pharmaceuticals3031.38 million29.32 millionOptionableCUECue Biopharma604.20 million3.59 millionOptionablePEPGPepGen3069.17 million68.27 millionNot OptionableSPROSpero Therapeutics15057.90 million56.22 millionOptionableATNM, CUE, SPRO, and PEPG HeadlinesRecent News About These CompaniesBiggest stock movers Thursday: INTC, KR, ACN, and moreJune 18, 2026 | seekingalpha.comSpero shares jump after FDA clears first oral carbapenem antibiotic for US market (SPRO)June 18, 2026 | msn.comGSK's Utebzi Wins FDA Nod for Complicated Urinary Tract InfectionsJune 18, 2026 | zacks.comSpero Therapeutics, Inc.: Utebzi (tebipenem pivoxil) approved in the US for adults with complicated urinary tract infections (cUTIs)June 18, 2026 | finanznachrichten.deFDA approves first oral carbapenem therapy for cUTIsJune 17, 2026 | thepharmaletter.comTUtebzi (tebipenem pivoxil) approved in the US for adults with complicated urinary tract infections (cUTIs)June 17, 2026 | globenewswire.comSpero Therapeutics: Approval Upside, Commercial Friction (Initiating Hold)June 10, 2026 | seekingalpha.comSpero Therapeutics Announces First Quarter 2026 Operating Results and Provides Business UpdateMay 13, 2026 | globenewswire.comEsther Rajavelu Sells 25,240 Shares of Spero Therapeutics (NASDAQ:SPRO) StockMay 7, 2026 | insidertrades.comSpero Therapeutics to Report First Quarter 2026 Financial Results and Provide Business Update on May 13, 2026May 5, 2026 | globenewswire.comSpero Therapeutics Announces Fourth Quarter and Full Year 2025 Operating Results and Provides a Business UpdateMarch 26, 2026 | globenewswire.comSpero Therapeutics to Report Fourth Quarter and Full Year 2025 Financial Results and Provide Business Update on March 26, 2026March 18, 2026 | globenewswire.comSpero Therapeutics: Tebipenem's FDA Path Supports A Speculative BuyFebruary 11, 2026 | seekingalpha.comSpero Therapeutics (NASDAQ:SPRO) Insider Sells $207,484.12 in StockFebruary 10, 2026 | insidertrades.comInsider Selling: Spero Therapeutics (NASDAQ:SPRO) Insider Sells 18,442 Shares of StockFebruary 6, 2026 | insidertrades.comWhy Spero Therapeutics, Inc.’s (SPRO) Stock Is Up 7.48%February 4, 2026 | aaii.comAFormer Spero execs fined by SEC over antibiotic efficacy claimsJanuary 20, 2026 | fiercebiotech.comFSpero Announces NDA Resubmission of Tebipenem HBr by GSK to the FDA for the Treatment of Complicated Urinary Tract Infections, Including PyelonephritisDecember 19, 2025 | globenewswire.comIs Spero Therapeutics (NASDAQ:SPRO) In A Good Position To Deliver On Growth Plans?December 15, 2025 | finance.yahoo.comSpero Therapeutics (SPRO) price target decreased by 20.00% to 4.08December 6, 2025 | msn.comNew MarketBeat Followers Over TimeMedia Sentiment Over TimeATNM, CUE, SPRO, and PEPG Company DescriptionsActinium Pharmaceuticals NYSE:ATNM$0.99 0.00 (0.00%) Closing price 04:00 PM EasternExtended Trading$0.97 -0.02 (-1.72%) As of 07:56 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.Actinium Pharmaceuticals, Inc. develops antibody radiation conjugates and other targeted radiotherapies intended to improve outcomes for people who have failed existing oncology therapies. Its Iomab-B is an induction and conditioning agent prior to bone marrow transplant in patients with relapsed and refractory acute myeloid leukemia (r/r AML). The company focuses on advancing its development for product candidate Actimab-A, a therapeutic agent that has demonstrated potential activity in r/r AML patients. In addition, it engages with the National Cancer Institute under the cooperative research and development agreement for the development of Actimab-A in AML and other myeloid malignancies. Its Iomab-ACT, a next generation conditioning candidate, is being developed for improving patient access and outcomes for curative cell and gene therapies. Further, the company's research and development activities primarily focus on advancing various preclinical programs for solid tumor indications. The company holds approximately 235 patents and patent applications, including various patents related to the manufacture of the isotope Ac-225 in a cyclotron. The company is based in New York, New York.Cue Biopharma NASDAQ:CUE$30.43 +5.04 (+19.85%) Closing price 04:00 PM EasternExtended Trading$29.76 -0.68 (-2.22%) As of 07:49 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.Cue Biopharma, Inc., a clinical-stage biopharmaceutical company, develops a novel class of injectable therapeutics to selectively engage and modulate targeted, disease relevant T cells directly within the patient's body. Its lead drug product candidate is CUE-101 for the treatment of human papilloma virus (HPV16+)-driven recurrent/metastatic head and neck cancer. The company is also developing CUE-102 targets Wilms' Tumor 1 protein in various cancers; CUE-103, a CUE-100 series drug product candidate; and Neo-STAT and RDI-STAT programs outside of oncology, including CUE-200, CUE-300, and CUE-400 series. It has collaboration agreements with LG Chem, Ltd. for the development of Immuno-STATs focused in the field of oncology; strategic collaboration and option agreement with Ono Pharmaceutical Co., Ltd. to advance CUE-401 for the treatment of autoimmune and inflammatory diseases; and license agreement with Albert Einstein College of Medicine. The company was formerly known as Imagen Biopharma, Inc. and changed its name to Cue Biopharma, Inc. in October 2016. Cue Biopharma, Inc. was incorporated in 2014 and is headquartered in Boston, Massachusetts.PepGen NASDAQ:PEPG$1.78 +0.08 (+4.71%) Closing price 04:00 PM EasternExtended Trading$1.74 -0.04 (-2.53%) As of 06:02 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.PepGen Inc., a clinical-stage biotechnology company, focuses on the development of oligonucleotide therapeutics for use in the treatment of severe neuromuscular and neurologic diseases. Its lead product candidate is PGN-EDO51, an EDO peptide that is in Phase 2 clinical trial to treat Duchenne muscular dystrophy (DMD) patients. The company is also developing PGN-EDODM1, an EDO peptide-conjugated PMO, which is in Phase 1 clinical trial for the treatment of myotonic dystrophy type 1, as well as EDO therapeutic candidates, such as PGN-EDO53, PGN-EDO45, and PGN-EDO44 for the treatment of DMD. PepGen Inc. was founded in 2018 and is based in Boston, Massachusetts.Spero Therapeutics NASDAQ:SPRO$2.26 0.00 (0.00%) Closing price 04:00 PM EasternExtended Trading$2.24 -0.01 (-0.66%) As of 07:44 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.Spero Therapeutics, Inc., a clinical-stage biopharmaceutical company, focuses on identifying, developing, and commercializing novel treatments for multi-drug resistant (MDR) bacterial infections and rare diseases in the United States. The company's product candidates include tebipenem pivoxil hydrobromide (HBr), an oral carbapenem-class antibiotic to treat complicated urinary tract infections, including pyelonephritis for adults; SPR206, an intravenous-administered antibiotic against MDR Gram-negative pathogens comprising carbapenem-resistant enterobacterales (CRE), acinetobacter baumannii, and pseudomonas aeruginosa, as well as negative bacterial infections in the hospital setting; and SPR720, a novel oral antibiotic agent for the treatment of non-tuberculous mycobacterial pulmonary disease. It has license agreement with Meiji Seika Pharma Co., Ltd. to support the development of tebipenem HBr; Everest Medicines to develop, manufacture, and commercialize SPR206 in Greater China, South Korea, and Southeast Asian countries; and Vertex Pharmaceuticals Incorporated for patents relating to SPR720, as well as SPR719, an active metabolite. Spero Therapeutics, Inc. was founded in 2013 and is headquartered in Cambridge, Massachusetts. 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