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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 | David F. RidlandCastlebay Investments | Spirax Sarco $SPX.L• LSE | MachineryMachinery | Castlebay Investments - SPX.L Spirax Group is, almost literally, a descendant of the Boulton & Watt story: a global leader in steam, fluid and thermal energy management, serving industrial customers for whom these systems are mission-critical infrastructure. The group operates... | NEUTRAL | View Pitch → |
| Aug 21, 2026 | Fund Letter | John HemptonBronte Capital Amalthea Fund | Spirax Sarco $SPX.L• LSE | MachineryMachinery | Long SPX.L (Spirax Group plc) The manager admits to making a valuation mistake by holding Spirax Group as its multiples rose to ten times revenue due to temporary pandemic-era supply chain dynamics. Despite this error,... | 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.