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Daily close · 2026-10-22
Price return
Both stocks start at 0% on the first shared trading day.
ACAD-61.54%
PASG-99.38%
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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 ATTACHEDACAD + PASGPrices, financials and SEC filing evidence
Similarity
100.0%
3 shared / 3 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.
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 · 3 rows, 3 columns
Core activities receive full weight; material activities receive one quarter. Select a tag to read the filing evidence.
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What each company does
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Acadia Pharmaceuticals Inc.
ACAD · XNAS
ACADIA Pharmaceuticals Inc., a biopharmaceutical company, focuses on the development and commercialization of medicines for central nervous system (CNS) disorders and rare diseases in the United States. The company offers NUPLAZID (pimavanserin) for the treatment of hallucinations and delusions associated with Parkinson's disease psychosis; and DAYBUE, a novel synthetic analog of the amino-terminal tripeptide of insulin-like growth factor 1 for treatment of Rett Syndrome. It also develops Pimavanserin which completed Phase III clinical trial to treat the negative symptoms of schizophrenia; ACP-101, which completed phase III clinical trial for the treatment of hyperphagia in Prader-Willi syndrome; ACP-204 that completed phase II clinical trial for the treatment of Alzheimer's disease psychosis and Lewy Body Dementia with psychosis; ACP-711, which is in phase I clinical trial for the treatment of essential tremor; ACP-211 that is in phase I clinical trial for the treatment of treatment-resistant depression; ACP-2591 that is in Phase I development for Rett syndrome and Fragile X syndrome; and ACP-271, a GPR88 agonist used in evaluation of neurology and is in the IND-enabling stage. The company has a license agreement with Neuren Pharmaceuticals Limited to trofinetide for Rett syndrome and other indications; and a license and collaboration agreement with Stoke Therapeutics, Inc. to discover, develop and commercialize novel RNA-based medicines for the potential treatment of severe and rare genetic neurodevelopmental diseases of the CNS. The company was formerly known as Receptor Technologies, Inc. and changed its name ACADIA Pharmaceuticals Inc. in 1997. ACADIA Pharmaceuticals Inc. was incorporated in 1993 and is headquartered in San Diego, California.
Passage Bio, Inc., a genetic medicines company, develops gene therapies for central nervous system diseases. It develops PBGM01, a functional GLB1 gene encoding ß-galactosidase for infantile GM1; PBFT02, a functional granulin (GRN) and gene encoding progranulin (PGRN) for the treatment of FTD caused by progranulin deficiency; and PBKR03, a functional GALC gene encoding the hydrolytic enzyme galactosylceramidase for infantile Krabbe disease. The company develops PBML04 for the treatment of metachromatic leukodystrophy; PBAL05 for the treatment of amyotrophic lateral sclerosis; and other program for huntington's disease. It has a strategic research collaboration with the Trustees of the University of Pennsylvania's Gene Therapy Program; and collaboration agreement, and a development services and clinical supply agreement with Catalent Maryland, Inc. The company was incorporated in 2017 and is based in Philadelphia, Pennsylvania.
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 2026-10-24. Industry snapshot: 2025-12-31 · 5,721 classified issuers.
