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RDHL vs SPRO

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Redhill Biopharma Ltd. and Spero Therapeutics, Inc. Common Stock

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Daily close · 2026-10-21

Price return

Both stocks start at 0% on the first shared trading day.

RDHL-99.99%
SPRO-93.47%
Price return: RDHL and SPROHistorical recorded observations on the same scale. Missing metrics leave gaps.-111%-71%-31%9%49%202120222023202420252026

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Split-adjusted closing prices. Dividends are excluded.Year ranges begin January 1 of the end year minus the selected years.
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CONTEXT ATTACHEDRDHL + SPROPrices, financials and SEC filing evidence

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Similarity
90.4%
3 shared / 4 total tags

How similar are their businesses?

The score compares business activities in annual filings released in 2025. Core activities receive four times the weight of material activities. Industries that fewer companies share carry more weight.

BiotechnologyHealthcarePharmaceuticals
How we measure overlap ↗
The businesses behind the score

Industry overlap

Filing-derived business activity overlapCounts of retained positive business classifications. Circle sizes do not encode the counts or the weighted similarity score.RDHL only1Shared3SPRO only0

RDHL only · 1

Shared activities · 3

SPRO only · 0

No activities in this group.

Positive activities from the two selected annual filings. Expand each group to view all its activities, or use the complete table below. These are classification sets, not revenue shares. The weighted similarity score also accounts for exposure and how common each activity is.
Show business activity table · 4 rows, 3 columns

Core activities receive full weight; material activities receive one quarter. Select a tag to read the filing evidence.

Business activityRDHLSPRO
CoreCore
CoreCore
CoreCore
MaterialNot tagged

Biotechnology

RDHL Core

Annual filing released 2025-04-10 · GPT 6 Luna

Our current capital expenditures involve basic equipment and leasehold improvements. B. Business Overview We are a specialty biopharmaceutical company, primarily focused on GI, infectious diseases and oncology. Our primary goal is to become a leading specialty biopharmaceutical company. We are currently focused primarily on the advancement of our development pipeline of clinical-stage therapeutic candidates. We also commercialize in the U.S. our GI-related product, Talicia® (omeprazole, amoxicillin, and rifabutin), and continue to explore our strategic plans for other potential products and activities. 63 Table of Contents
Among our therapeutic candidates, we are exploring opaganib as a potential treatment for various conditions, including GI-ARS, viral infections such as COVID-19, Ebola virus disease and additional viruses as part of pandemic preparedness, several cancers and diabetes and obesity-related disorders. Furthermore, we are investigating RHB-107 (upamostat) as a potential treatment for COVID-19 and other viruses as part of pandemic preparedness, including the Ebola virus. Our current pipeline consists of five therapeutic candidates, part of which are in late stage clinical development. We generate our pipeline of therapeutic candidates by identifying, validating and in-licensing or acquiring products that are consistent with our product and corporate strategy and that have the potential to exhibit a favorable probability of therapeutic and commercial success.
Read the annual filing ↗

SPRO Core

Annual filing released 2025-03-27 · GPT 6 Luna

We are a clinical-stage biopharmaceutical company focused on identifying and developing novel treatments for rare diseases and diseases caused by multi-drug resistant (“MDR”) bacterial infections with high unmet need. Since our inception in 2013, we have focused our efforts and financial resources on acquiring and developing product and technology rights, building our intellectual property portfolio and conducting research and development activities for our product candidates. We do not have any products approved for sale and have not generated any revenue from product sales. We believe that our novel product candidates, if successfully developed and approved, could provide meaningful benefits to patients suffering from serious rare diseases and life-threatening bacterial infections, in both the community and hospital settings.
Our pipeline consists of mid- to late-stage clinical assets. Our most advanced clinical stage product candidate, tebipenem HBr, is in Phase 3 development, with the potential to be the first broad-spectrum oral carbapenem to treat adult patients with complicated urinary tract infections (“cUTIs”), including pyelonephritis, caused by certain microorganisms. The other programs in our pipeline are SPR206 and SPR720. SPR206 is an intravenously (“IV”) administered next generation polymyxin product candidate, for the treatment of hospital-acquired and ventilator-associated bacterial pneumonia (“HABP/VABP”) caused by MDR Gram-negative bacterial infections. In March 2025, following a reprioritization of our programs, we announced that we are no longer pursuing a planned Phase 2 clinical trial for SPR206.
Read the annual filing ↗

Healthcare

RDHL Core

Annual filing released 2025-04-10 · GPT 6 Luna

Our current capital expenditures involve basic equipment and leasehold improvements. B. Business Overview We are a specialty biopharmaceutical company, primarily focused on GI, infectious diseases and oncology. Our primary goal is to become a leading specialty biopharmaceutical company. We are currently focused primarily on the advancement of our development pipeline of clinical-stage therapeutic candidates. We also commercialize in the U.S. our GI-related product, Talicia® (omeprazole, amoxicillin, and rifabutin), and continue to explore our strategic plans for other potential products and activities. 63 Table of Contents
We currently promote and commercialize Talicia® in the U.S. Talicia® (omeprazole magnesium, amoxicillin, and rifabutin) delayed-release capsules 10.3 mg/250 mg/12.5 mg Talicia® is our proprietary drug approved by the FDA for marketing in the U.S. for the treatment of H. pylori infection in adults. Talicia® is a combination of three approved drug products – omeprazole, which is a proton pump inhibitor (it prevents the secretion of hydrogen ions increasing the pH of the stomach), plus amoxicillin and rifabutin, which are antibiotics. Talicia® is administered to patients orally in the form of a fixed-dose, all-in-one capsule. Talicia® is the first product we developed that was approved for marketing in the U.S., which we launched in March 2020 with our dedicated sales force. Chronic infection with H. pylori irritates the mucosal lining of the stomach and small intestine.
Read the annual filing ↗

SPRO Core

Annual filing released 2025-03-27 · GPT 6 Luna

We are a clinical-stage biopharmaceutical company focused on identifying and developing novel treatments for rare diseases and diseases caused by multi-drug resistant (“MDR”) bacterial infections with high unmet need. Since our inception in 2013, we have focused our efforts and financial resources on acquiring and developing product and technology rights, building our intellectual property portfolio and conducting research and development activities for our product candidates. We do not have any products approved for sale and have not generated any revenue from product sales. We believe that our novel product candidates, if successfully developed and approved, could provide meaningful benefits to patients suffering from serious rare diseases and life-threatening bacterial infections, in both the community and hospital settings.
Our pipeline consists of mid- to late-stage clinical assets. Our most advanced clinical stage product candidate, tebipenem HBr, is in Phase 3 development, with the potential to be the first broad-spectrum oral carbapenem to treat adult patients with complicated urinary tract infections (“cUTIs”), including pyelonephritis, caused by certain microorganisms. The other programs in our pipeline are SPR206 and SPR720. SPR206 is an intravenously (“IV”) administered next generation polymyxin product candidate, for the treatment of hospital-acquired and ventilator-associated bacterial pneumonia (“HABP/VABP”) caused by MDR Gram-negative bacterial infections. In March 2025, following a reprioritization of our programs, we announced that we are no longer pursuing a planned Phase 2 clinical trial for SPR206.
Read the annual filing ↗

Pharmaceuticals

RDHL Core

Annual filing released 2025-04-10 · GPT 6 Luna

Our current capital expenditures involve basic equipment and leasehold improvements. B. Business Overview We are a specialty biopharmaceutical company, primarily focused on GI, infectious diseases and oncology. Our primary goal is to become a leading specialty biopharmaceutical company. We are currently focused primarily on the advancement of our development pipeline of clinical-stage therapeutic candidates. We also commercialize in the U.S. our GI-related product, Talicia® (omeprazole, amoxicillin, and rifabutin), and continue to explore our strategic plans for other potential products and activities. 63 Table of Contents
We currently promote and commercialize Talicia® in the U.S. Talicia® (omeprazole magnesium, amoxicillin, and rifabutin) delayed-release capsules 10.3 mg/250 mg/12.5 mg Talicia® is our proprietary drug approved by the FDA for marketing in the U.S. for the treatment of H. pylori infection in adults. Talicia® is a combination of three approved drug products – omeprazole, which is a proton pump inhibitor (it prevents the secretion of hydrogen ions increasing the pH of the stomach), plus amoxicillin and rifabutin, which are antibiotics. Talicia® is administered to patients orally in the form of a fixed-dose, all-in-one capsule. Talicia® is the first product we developed that was approved for marketing in the U.S., which we launched in March 2020 with our dedicated sales force. Chronic infection with H. pylori irritates the mucosal lining of the stomach and small intestine.
Read the annual filing ↗

SPRO Core

Annual filing released 2025-03-27 · GPT 6 Luna

We are a clinical-stage biopharmaceutical company focused on identifying and developing novel treatments for rare diseases and diseases caused by multi-drug resistant (“MDR”) bacterial infections with high unmet need. Since our inception in 2013, we have focused our efforts and financial resources on acquiring and developing product and technology rights, building our intellectual property portfolio and conducting research and development activities for our product candidates. We do not have any products approved for sale and have not generated any revenue from product sales. We believe that our novel product candidates, if successfully developed and approved, could provide meaningful benefits to patients suffering from serious rare diseases and life-threatening bacterial infections, in both the community and hospital settings.
Our pipeline consists of mid- to late-stage clinical assets. Our most advanced clinical stage product candidate, tebipenem HBr, is in Phase 3 development, with the potential to be the first broad-spectrum oral carbapenem to treat adult patients with complicated urinary tract infections (“cUTIs”), including pyelonephritis, caused by certain microorganisms. The other programs in our pipeline are SPR206 and SPR720. SPR206 is an intravenously (“IV”) administered next generation polymyxin product candidate, for the treatment of hospital-acquired and ventilator-associated bacterial pneumonia (“HABP/VABP”) caused by MDR Gram-negative bacterial infections. In March 2025, following a reprioritization of our programs, we announced that we are no longer pursuing a planned Phase 2 clinical trial for SPR206.
Read the annual filing ↗

Oncology

RDHL Material

Annual filing released 2025-04-10 · GPT 6 Luna

Among our therapeutic candidates, we are exploring opaganib as a potential treatment for various conditions, including GI-ARS, viral infections such as COVID-19, Ebola virus disease and additional viruses as part of pandemic preparedness, several cancers and diabetes and obesity-related disorders. Furthermore, we are investigating RHB-107 (upamostat) as a potential treatment for COVID-19 and other viruses as part of pandemic preparedness, including the Ebola virus. Our current pipeline consists of five therapeutic candidates, part of which are in late stage clinical development. We generate our pipeline of therapeutic candidates by identifying, validating and in-licensing or acquiring products that are consistent with our product and corporate strategy and that have the potential to exhibit a favorable probability of therapeutic and commercial success.
Approved Stage Rights to the Product Opaganib Patients hospitalized with SARS-CoV-2 severe COVID-19 pneumonia Oral administration, first-in-class SK2 selective inhibitor, with anti-inflammatory, antiviral and anti-cancer activities U.S. Phase 2 study completed and data received; global Phase 2/3 completed and data received and submitted regulatory packages to regulatory authorities We filed patent applications to protect the proposed commercial use Opaganib Prostate cancer Oral administration, first-in-class SK2 selective inhibitor, sensitizes prostate cancer cells to androgen receptor signal inhibitors (e.g. darolutamide) Investigator-sponsored Phase 2 study in the U.S patient follow up completed. Investigator-initiated phase 2 study in combination with Bayer’s darolutamide – initiated in Australia Worldwide exclusive license Opaganib
Read the annual filing ↗

SPRO Not tagged

Annual filing released 2025-03-27 · GPT 6 Luna

This activity has no positive tag in the selected filing snapshot.

Read the annual filing ↗
What each company does

Compare the businesses

Redhill Biopharma Ltd.

RDHL · XNAS

RedHill Biopharma Ltd., a specialty biopharmaceutical company, primarily focuses on gastrointestinal and infectious diseases. The company develops and commercializes Talicia for the treatment of H. pylori infection in adults; and Aemcolo for the treatment of travelers' diarrhea in adults. Its pipeline consists of five therapeutic candidates, which are in clinical development include opaganib for treating patients hospitalized with SARS-CoV-2 severe COVID-19 pneumonia, prostate cancer, nuclear radiation protection; and host directed anti-viral; RHB-107 (upamostat) for treating outpatients infected with SARS-CoV-2 (COVID-19 disease) and advanced unresectable cholangiocarcinoma; RHB-104 for Crohn's disease; RHB-102 (Bekinda) for the treatment of acute gastroenteritis and gastritis, irritable bowel syndrome with diarrhea, and oncology support anti-emetic; and RHB-204 that is in Phase 3 clinical trial for the treatment of pulmonary Mycobacterium avium complex disease in adults. The company was incorporated in 2009 and is headquartered in Tel Aviv, Israel.

Open RDHL dashboard ↗

Spero Therapeutics, Inc. Common Stock

SPRO · XNAS

Spero Therapeutics, Inc., a clinical-stage biopharmaceutical company, focuses on identifying and developing novel treatments for multi-drug resistant (MDR) bacterial infections and rare diseases in the United States. The company's product candidates include Tebipenem HBr (tebipenem pivoxil hydrobromide), an oral carbapenem-class antibiotic to treat complicated urinary tract infections, including pyelonephritis for adult patients, which is in Phase 3 development; and SPR720, a novel product candidate for first-line treatment of nontuberculous mycobacterial (NTM) 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 the oral prodrug SPR720, as well as SPR719, an active metabolite. Spero Therapeutics, Inc. was founded in 2013 and is headquartered in Cambridge, Massachusetts.

Open SPRO dashboard ↗
Financial data

Fundamentals side by side

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Show fundamentals table · 11 rows, 3 columns
MetricRDHLSPRO
ExchangeXNASXNAS
SectorHealthcareHealthcare
IndustryDrug Manufacturers - Specialty & GenericBiotechnology
Market observation2026-10-212026-10-21
Closing price (USD)$0.46$1.17
Market cap (USD)Unavailable$68.13M
P/E (TTM)Unavailable9.23×
Latest annual period2025-12-312025-12-31
Revenue (annual, USD)$286,000.00$66.80M
Net income (annual, USD)$-429,000.00$8.57M
Gross margin (annual)UnavailableUnavailable

USD values from stored observations. Fiscal period endings and availability dates may differ.

RDHL period ended 2025-12-31 · available 2026-04-27 · SEC filing ↗SPRO period ended 2025-12-31 · available 2026-03-26 · SEC filing ↗

Related stock comparisons

Browse all RDHL comparisons ↗ · Browse all SPRO comparisons ↗

Behind the comparison

Sources and methodology

Price return uses split-adjusted daily closes and excludes dividends. Both stocks start on the first shared trading day within the selected window. Unavailable metrics leave gaps.

Financials use SEC canonical statements available by the displayed cutoff, retaining each company's fiscal period end. Annual and quarterly amounts are shown separately. P/E is unavailable when earnings do not support a positive ratio.

Business overlap uses industry tags from annual filings released in 2025. Each core activity receives full weight; each material activity receives one quarter of that weight. Rarer industries carry more weight. We sum the smaller exposure for each shared activity and divide it by the sum of the larger exposure for every activity in either company. This measures business overlap, rather than price correlation or expected returns.

Search eligibility requires distinct issuers, a shared core category and at least 20% weighted overlap, supported by industry or sector evidence and specific business activities. Broad classifications require stronger overlap within the same sector. Comparisons also need at least 252 shared price observations within two years, recent trading and a common sourced revenue or net-income trend. Missing P/E or gross margin alone does not exclude a comparison. The eligibility snapshot refreshes daily. Related comparisons use a separate, stricter peer rule; their ten-peer discovery limit does not limit search eligibility. Other stock pairs remain available in the comparison tool.

Statements available through 2026-10-22. Industry snapshot: 2025-12-31 · 5,721 classified issuers.

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