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Equity Research Database
Institutional Investment Pitches
Explore thousands of hedge fund pitches, high-conviction equity research memos, and portfolio manager commentary extracted from quarterly letters.
Explore thousands of hedge fund pitches, high-conviction equity research memos, and portfolio manager commentary extracted from quarterly letters.
Explore professional investment ideas sourced from institutional letters, short theses, and premium research channels, distilled into concise summaries.
| Pitch Type | Author | Industry | Pitch Thesis & Key Summary | Bull/Bear | Action | ||
|---|---|---|---|---|---|---|---|
| Sep 2, 2026 | Fund Letter | Jay WarnerArtisan Partners Small Cap Fund | Twist Bioscience Corp. $TWST• NASDAQ | Life Sciences Tools & ServicesLife Sciences Tools & Services | Artisan Partners Small Cap Fund - TWST Twist Bioscience is a life sciences company that leverages a proprietary silicon-based DNA writing platform, with synthetic biology applications across drug discovery, diagnostics, agriculture and industrial materials. Shares rose 116%... | NEUTRAL | View Pitch → |
| Aug 21, 2026 | Fund Letter | Mark L. YockeyArtisan International Fund | Twist Bioscience Corp. $TWST• NASDAQ | Life Sciences Tools & ServicesLife Sciences Tools & Services | Long TWST (Twist Bioscience) Twist Bioscience is a life sciences company that leverages a proprietary silicon-based DNA writing platform, with synthetic biology applications across drug discovery, diagnostics, agriculture and ind | BULL | View Pitch → |
| Aug 21, 2026 | Fund Letter | Stephen E. GrantValue Line Mid Cap Focused Fund | Health Care Equipment & SuppliesHealth Care Equipment & Supplies | Short WST (West Pharmaceutical Services Inc.) The fund completely exited its stake in West Pharmaceutical Services Inc. during the quarter. | BEAR | View Pitch → | |
| Aug 21, 2026 | Fund Letter | Joe MonahanConestoga Small Cap Composite | Casella Waste Systems $CWST• NASDAQ | Commercial Services & SuppliesCommercial Services & Supplies | Long CWST (Casella Waste Systems) CWST provides solid waste collection, recycling, and resource management services. The stock underperformed... | BULL | View Pitch → |
| Aug 21, 2026 | Fund Letter | Miguel Nogales and Nick KukrikaGeneration Investment Management Global Equity | Health Care Equipment & SuppliesHealth Care Equipment & Supplies | Generation Investment Management Global Equity - WST Our investment case for West Pharmaceutical Services is clear: West sits in a uniquely strong position within a structurally growing industry, with the potential to create huge sustaina | NEUTRAL | View Pitch → | |
| Aug 8, 2026 | Fund Letter | Miguel Nogales and Nick KukrikaGeneration Investment Management Global Equity | Health Care Equipment & SuppliesHealth Care Equipment & Supplies | Generation Investment Management Global Equity – WST Our investment case for West Pharmaceutical Services is clear: West sits in a uniquely strong position within a structurally growing industry, with the potential to ... | BULL | View Pitch → | |
| Jan 28, 2026 | Fund Letter | Randy GwirtzmanBaron Discovery Fund | Casella Waste Systems $CWST• NASDAQ | Commercial Services & SuppliesCommercial Services & Supplies | Baron Discovery Fund 2025 Q4 (CWST) We recently initiated a position in Casella Waste Systems, Inc., the fifth largest waste management and recycling company in North America. The company has... | BULL | View Pitch → |
| Jan 20, 2026 | Fund Letter | Conestoga Capital Advisors, LLCConestoga Mid Cap Composite | Health Care Equipment & SuppliesHealth Care Equipment & Supplies | Conestoga Mid Cap Composite 2025 Q4 (WST) West Pharmaceutical Services, Inc. (WST) performed strongly as momentum in its High-Value Products segment continued. Demand tied to... | BULL | View Pitch → | |
| Dec 4, 2025 | Fund Letter | Derek JohnstonConestoga Micro Cap Composite | Twist Bioscience Corp. $TWST• NASDAQ | Life Sciences Tools & ServicesLife Sciences Tools & Services | Conestoga Micro Cap Composite 2025 Q2 (TWST) TWST is a rapidly growing synthetic biology company that has developed a disruptive DNA synthesis platform that manufactures synthetic DNA by “writing” it on a silicon chip. TWST leverages their... | BULL | View Pitch → |
| Nov 28, 2025 | Fund Letter | Brian CampbellThe London Company SMID Cap | Casella Waste Systems $CWST• NASDAQ | Commercial Services & SuppliesCommercial Services & Supplies | The London Company SMID Cap 2025 Q3 (CWST) CWST was an underperformer after reporting continued weakness in construction and demolition volumes, plus temporarily slower synergies from the recent larger acquisition. CWST continues to... | BULL | View Pitch → |
| Nov 28, 2025 | Fund Letter | Jay WarnerArtisan Partners Small Cap Fund | Twist Bioscience Corp. $TWST• NASDAQ | Life Sciences Tools & ServicesLife Sciences Tools & Services | Artisan Partners Small Cap Fund 2025 Q3 (TWST) Twist Bioscience is a life sciences company leveraging a proprietary silicon-based DNA writing platform with synthetic biology applications in drug discovery, diagnostics, agriculture and industrial materials. The company recently... | BULL | View Pitch → |
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Investment pitches and theses displayed on Buyside Digest are summaries of opinions expressed in publicly available investor letters, research reports, or other commentary. These summaries are generated for informational and research purposes only and do not constitute investment recommendations, financial advice, or an endorsement of any particular security or strategy by Buyside Digest. Users should conduct their own independent due diligence and consult with professional advisors before making any investment decisions.