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Robinhood Markets, Inc is a financial services platform, which engages in the provision of retail brokerage and offers trading in U.S. listed stocks and Exchange Traded Funds, related options, and cryptocurrency trading, as well as cash management, which includes debit cards services. The company was founded by Vladimir Tenev and Baiju Prafulkumar Bhatt in 2013 and is headquartered in Menlo Park, CA.

Robinhood Markets Inc - Ordinary Shares - Class A

Robinhood Markets Inc

Robinhood Markets is experiencing a significant pullback, widely attributed to a broad crypto market downturn and reduced prediction market activity, sparking a community debate between those who see it as an attractive buying opportunity and others concerned about potential market manipulation or deeper issues ahead of upcoming earnings.

ProShares Trust - ProShares Ultra Bloomberg Natural Gas 2x Shares

ProShares Ultra Bloomberg Natural Gas

BOIL is trending after an 'epic' one-day decline of over 50%, as natural gas futures plummet amid forecasts for a warmer February, overturning previous cold weather expectations. The community is intensely discussing the 'widow maker' volatility, with many celebrating gains in the inverse KOLD, while others eye a contrarian bounce following BOIL's extreme sell-off.

Palantir Technologies, Inc. engages in the business of building and deploying software platforms that serve as the central operating systems for its customers. It operates through the Commercial and Government segments. The Commercial segment focuses on customers working in non-government industries. The Government segment is involved in providing services to customers that are the United States government and non-United States government agencies. Its platforms are widely used in areas such as defense, intelligence, healthcare, energy, and financial services, supporting data integration, large-scale analytics, and operational decision-making. The company was founded by Alexander Ceadmon Karp, Peter Andreas Thiel, Stephen Cohen, Joseph Lonsdale, and Nathan Dale Gettings in 2003 and is headquartered in Denver, CO.

Palantir Technologies Inc - Ordinary Shares - Class A

Palantir Technologies Inc

Palantir Technologies is trending due to its imminent earnings report, generating a highly polarized community discussion around its valuation and potential for significant post-announcement price movement. While some anticipate a strong beat and rally fueled by AI momentum and recent analyst upgrades, many express caution, believing the stock is overvalued and due for a pullback regardless of strong results.

Newcourt Acquisition Corp. is a blank check company, which engages in the purpose of effecting a merger, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses. The company was founded on February 25, 2021 and is headquartered in Oakland, CA.

Psyence Biomedical Ltd.

Psyence Biomedical (PBM) is experiencing extreme volatility and frequent trading halts following its reverse stock split, which created an ultra-low float. The community is sharply divided, with discussions ranging from its potential for a short squeeze and its role as a sympathy play among low-float biotechs, to widespread frustration over perceived manipulation and trading disruptions.

GameStop Corp. engages in offering games and entertainment products through its ecommerce properties and stores. The firm’s stores and ecommerce sites operate primarily under the names GameStop, EB Games, and Micromania. It operates through the following geographical segments: United States, Canada, Australia, and Europe. The company was founded by Daniel A. DeMatteo in 1996 and is headquartered in Grapevine, TX.

Gamestop Corporation - Ordinary Shares - Class A

GameStop Corp

GameStop is trending amid widespread community speculation about an imminent "monumental" acquisition by Ryan Cohen, with many anticipating a massive short squeeze and aiming for a $100 billion market cap, despite some concerns about potential share dilution.

Snap, Inc. operates as a technology company, which engages in the provision of a visual messaging application that was created to help people communicate through short videos and images. The company was founded by Frank Reginald Brown IV, Evan Thomas Spiegel, and Robert C. Murphy in 2010 and is headquartered in Santa Monica, CA.

Snap Inc - Ordinary Shares - Class A

Snap Inc

Snap Inc. is trending ahead of its Q4 earnings report, driving polarized community discussion. Many view its current low valuation as a buying opportunity, while others express deep frustration over management's performance and the stock's persistent declines amidst broader regulatory headwinds for social media platforms.

The Walt Disney Co. engages in the business of international family entertainment and media enterprise. It owns and operates television and radio production, distribution and broadcasting stations, direct-to-consumer services, amusement parks, and hotels. It operates through the following business segments: Disney Entertainment, ESPN, and Disney Parks, Experiences, and Products. The company was founded by Walter Elias Disney on October 16, 1923 and is headquartered in Burbank, CA.

Walt Disney Co (The)

Walt Disney Co

Disney is trending following mixed reactions to its latest earnings, which showcased record performance in its Parks and Experiences division and a profitable streaming segment, yet saw its stock dip. The community is actively discussing whether these strong business fundamentals, coupled with a significant share buyback and looming CEO transition, can overcome years of stagnant stock performance and ongoing debates about its content strategy.

Amprius Technologies, Inc. engages in the development, manufacture, and market lithium-ion batteries for mobility applications, including the aviation, electric vehicle and light electric vehicle industries. It operates through the United States and Rest of the World geographical segments. The company was founded by Mark C. Platshon in 2008 and headquartered in Fremont, CA.

Amprius Technologies Inc

Amprius Technologies is trending following recent analyst upgrades and price target increases, driven by its proprietary silicon anode battery technology. The community is actively discussing AMPX's role in the growing drone and electric mobility sectors, with many anticipating significant contract announcements and continued upward momentum.

Atossa Therapeutics, Inc. operates as a clinical-stage pharmaceutical company, which engages in the development of novel therapeutics and delivery methods for the treatment of breast cancer and other breast conditions. The company was founded by Steven C. Quay and Shu Chih Chen in December 2008 and is headquartered in Seattle, WA.

Atossa Therapeutics Inc

Atossa Therapeutics is trending as shareholders react with widespread anger and distrust to the confirmed 1-for-15 reverse stock split and the recently announced FDA Orphan Drug Designation for Duchenne Muscular Dystrophy. The community is actively debating if the new designation is a positive catalyst or merely a distraction from concerns over impending dilution and management's perceived missteps.

United States Commodity Funds LLC - United States Natural Gas Fund

United States Natural Gas Fund, LP

UNG is trending as natural gas futures surge amid severe cold weather and winter storms across the US, intensifying heating and electricity demand and potentially disrupting supply. The community is actively debating whether the current rally is fully priced in or if sustained demand and production concerns will drive further volatility in this "widow maker" market.

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Are Medical Stocks Lagging  Actinium Pharmaceuticals (ATNM) This Year?

Here is how Actinium Pharmaceuticals (ATNM) and Collegium Pharmaceutical (COLL) have performed compared to their sector so far this year.

<ul class="summary-bullets"><li>The company’s latest research shows ATNM-400 achieving substantial tumor-growth suppression.</li><li>The therapy targets a validated antigen overexpressed in breast cancer and other solid tumors, such as Prostate Cancer and Non-Small Cell Lung Cancer.</li><li>Researchers observed that ATNM-400 induced irreversible DNA damage.</li></ul>Actinium Pharmaceuticals, Inc. (ATNM) stock was in the spotlight on Friday after the company announced promising new preclinical findings for its novel radiotherapy, ATNM-400, at the 2025 San Antonio Breast Cancer Symposium (SABCS).&nbsp;The Actinium-225 (Ac-225) antibody radioconjugate demonstrated strong anti-tumor activity across multiple breast cancer models, including hormone receptor–positive (HR+), triple-negative (TNBC), and treatment-resistant tumors.<h2 class="st-heading-2">ATNM-400’s Broad Potential</h2>The company’s latest research shows ATNM-400 achieving substantial tumor-growth suppression with minimal side effects in preclinical studies.&nbsp;The therapy targets a validated antigen overexpressed in breast cancer and other solid tumors, such as Prostate Cancer and Non-Small Cell Lung Cancer (NSCLC), positioning ATNM-400 as a potential pan-tumor radiotherapy solution.Following the update,&nbsp;<a href="https://stocktwits.com/symbol/ATNM">Actinium’s stock</a> traded over 3% higher in Friday’s premarket. On Stocktwits, retail sentiment around the stock remained in ‘neutral’ territory amid ‘normal’ message volume levels.&nbsp;<h2 class="st-heading-2">Effectiveness Against Resistant Cancer Types</h2>ATNM-400 displayed potent cytotoxic effects in models resistant to standard-of-care treatments, including trastuzumab-resistant BT474-Clone5 and tamoxifen-resistant MCF7-Tam1 cells. Combining ATNM-400 with conventional therapies like trastuzumab or tamoxifen enhanced tumor regression in preclinical models."Patients whose tumors progress after endocrine therapy or HER2-targeted therapies face limited and often toxic treatment options. The data presented at SABCS show that ATNM-400 generates potent, targeted DNA damage even in highly resistant breast cancer models, while maintaining a favorable tolerability profile,” said&nbsp;Aditya Bardia, Program Director, Breast Medical Oncology at Geffen School of Medicine, University of California, Los Angeles.Researchers observed that ATNM-400 induced irreversible DNA damage, marked by elevated phosphorylation of H2AX (pH2AX) and AKT (pAKT), consistent with alpha-particle–driven double-strand DNA breaks.&nbsp;ATNM stock has gained over 17% year-to-date.Also See:&nbsp;<a href="https://stocktwits.com/news-articles/markets/equity/nvidia-weighs-boosting-h200-ai-chip-production-report/cLICS1gREF8">Nvidia Weighs Boosting H200 AI Chip Production: Report</a>For updates and corrections, email newsroom[at]stocktwits[dot]com.

In this photo illustration, the Actinium Pharmaceuticals, Inc. logo is displayed on the screen of a tablet. 

Why Is Actinium Pharmaceuticals Stock Rising Today? 

The Actinium-225 (Ac-225) antibody radioconjugate demonstrated strong anti-tumor activity across multiple breast cancer models.

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The Actinium-225 (Ac-225) antibody radioconjugate demonstrated strong anti-tumor activity across multiple breast cancer models.


Are Medical Stocks Lagging  Alpha Cognition Inc. (ACOG) This Year?

Here is how Alpha Cognition Inc. (ACOG) and Actinium Pharmaceuticals (ATNM) have performed compared to their sector so far this year.

Is Alpha Cognition Inc. (ACOG) Stock Outpacing Its Medical Peers This Year?

Is Armata Pharmaceuticals (ARMP) Stock Outpacing Its Medical Peers This Year?

Here is how Armata Pharmaceuticals, Inc. (ARMP) and Actinium Pharmaceuticals (ATNM) have performed compared to their sector so far this year.

Is Actinium Pharmaceuticals (ATNM) Stock Outpacing Its Medical Peers This Year?

Here is how Actinium Pharmaceuticals (ATNM) and Avadel (AVDL) have performed compared to their sector so far this year.

Regencell Bioscience Holdings Ltd (3,500% Jump in Message Volume)Hong Kong-based Regencell focuses on traditional Chinese medicine for neurocognitive disorders, particularly ADHD and autism. Reports suggest its recent rally was fueled by insider buying, with insiders owning 81% of the company.&nbsp;However, a Stocktwits&nbsp;<a href="https://stocktwits.com/news-articles/markets/equity/rgc-stock-more-than-triples-this-year/ch7KEpeRbcl">poll</a> indicates retail traders remain skeptical, with some flagging it as a potential pump-and-dump risk.&nbsp;The stock has surged 1,054% this year.GlucoTrack Inc. (2,800% Jump in Message Volume)GlucoTrack develops non-invasive glucose monitoring devices. It announced that safety and performance data from its first-in-human trial of a long-term continuous blood glucose monitoring (CBGM) system will be presented at the 2025 ATTD conference.&nbsp;CEO Paul V. Goode highlighted its potential for real-time glucose monitoring without on-body wearables, calling it a transformative step in diabetes management.&nbsp;GlucoTrack stock is down over 96% year-to-date (YTD).TC Biopharm (Holdings) Plc (1,300% Jump in Message Volume)TC Biopharm&nbsp;<a href="https://stocktwits.com/symbol/TCBP">received</a> a Nasdaq delisting notice due to its share price falling below $1. Trading will be suspended on Monday, with its American depository shares expected to move to OTC Markets.&nbsp;The company is also shifting to a contract development and manufacturing organization (CDMO) model, cutting about 50% of its workforce to reduce operational burn by 55%. This is projected to save $2.1 million in 2025 and $4.2 million annually.&nbsp;The stock is down over 95% YTD.AbbVie Inc. (700% Jump in Message Volume)Erste Group upgraded AbbVie to ‘Buy’ from ‘Hold’, according to The Fly, citing strong sales growth projections through 2029, supported by upcoming product launches. The research firm expects earnings per share (EPS) to rise significantly in 2025, ranging from $12.12 to $12.32.&nbsp;AbbVie recently agreed to acquire a next-gen obesity drug from Denmark-based Gubra A/S for up to $2.2 billion, boosting sentiment.&nbsp;The stock is up over 17.5% YTD.Actinium Pharmaceuticals Inc. (600% Jump in Message Volume)Actinium is launching trials for its drug Actimab-A in combination with Merck’s Keytruda and Bristol Myers Squibb’s Opdivo to treat solid tumors. The trials will include head-to-head studies comparing Actimab-A combinations to standalone treatments.&nbsp;The company also entered a research agreement with Memorial Sloan Kettering to expand Actimab-A’s applications.&nbsp;Actinium stock is up over 22% YTD.For updates and corrections, email newsroom[at]stocktwits[dot]com.

A person examines financial data on a screen displaying a graph with upward and downward trends, using a pen to trace the line chart. | Representative Image: Getty Images

Regencell, GlucoTrack, TC Biopharm, AbbVie, Actinium: 5 Health Care Stocks That Lit Up Retail Discussions Last Week

Investors reacted to insider buying, clinical trial updates, and strategic business shifts that happened in the week ended March 21, 2025.

Actinium Pharmaceuticals, Inc. is a clinical-stage biopharmaceutical company, which engages in the development of novel targeted therapies. It also develops and markets medicines for relapsed or refractory cancer patients. The company was founded in 2000 and is headquartered in New York, NY.

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