Primary Source Intelligence

The Most Comprehensive Hedge Fund Intelligence

Institutional-grade analysis of hedge fund letters, investment pitches, and manager commentary.

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Primary-source intelligence from leading global fund managers

Letters

Primary-source institutional research from global fund managers

Funds

Individual investment firms tracked across strategies

Tickers

Companies mapped across letters and high-conviction pitches

Alpha Pitches

Curated bull and bear theses synthesized from the buy-side

Curated Directory

Top Institutional Managers to Follow

The most-tracked hedge fund managers on Buyside Digest, weighted by letter reads, verified track records, and pitch engagement.

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#1

The Longriver Partners Fund

The Longriver Partners Fund

Large Cap · Activist
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#2

Polen 5Perspectives Small-Mid Growth

Polen 5Perspectives Small-Mid Growth

Large Cap · Activist
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#310046 AUM

Ironvine Capital Partners

Ironvine Capital Partners

Fundamental Long/Short · Quality Value / Growth
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#4Undisclosed AUM

Bison Energy Opportunity Fund

Bison Energy Opportunity Fund

Fundamental Long/Short · Quality Value / Growth
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#5

Ariel Small Cap Value Tax-Exempt Composite

Ariel Small Cap Value Tax-Exempt Composite

Large Cap · Activist
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The Buyside Digest Idea Generation Platform

Buyside Digest primary-source investor research, including hedge fund letters, investment pitches, and investment theses, so investors can generate, validate, and track ideas with confidence.

Hedge Fund Letters

The foundation. The most comprehensive database of hedge fund investment letters, searchable by fund, ticker, theme, and quarter.

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Investment Pitches

The idea engine. Curated bull and bear theses sourced from hedge funds, investor write-ups, and short reports.

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Alerts & Tracking

Stay ahead automatically. Track fund managers, tickers, and sectors - and get notified when new letters are published.

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Buyside Insights

Context beyond filings. A curated library of podcasts, original insights, and timeless investment classics.

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Explore the Hedge Fund Letter Database

The largest collection of letters to hedge fund investors organized by investment strategy, investment themes, and geographic exposure.

BSD Recommended Letters

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QuarterFundKey PersonQTDYTDLetter
2026 Q3Evolve Private WealthRazmig Der-Tavitian——View
2026 Q3Alpinum Investment ManagementPortfolio Manager——View
2026 Q3Baillie Gifford -International GrowthThomas Coutts / Brian Lum / Julia Angeles / Lawrence Burns / Robert Wilson-0.9%+3.4%View
2026 Q3Baillie Gifford -Emerging MarketsAndrew Stobart / Mike Gush / Ben Durrant-4.5%+23.6%View
2026 Q3Baillie Gifford - International AlphaDonald Farquharson / Tom Walsh / Roderick Snell / Jenny Davis / Chris Davies / Steve Vaughan+1.0%+9.0%View
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Investment Pitches From the Buy Side

Direct, high-conviction institutional theses synthesized from the world's most influential investment letters and primary-source research.

Featured Institutional Pitches

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DateFundTickerThesisStanceResearch
Oct 2026Distillate Capital Fundamental Stability & Value$TOLLong TOL (Toll Brothers, Inc.)BullView Pitch
Oct 2026Warden Capital$CRWVShort CRWV (CoreWeave Inc.)BearView Pitch
Oct 2026Third Avenue Value Fund$PSN.LLong PSN.L (Persimmon plc)BullView Pitch
Oct 2026Riverwater Sustainable Value Strategy$KBRLong KBR (KBR, Inc.)BullView Pitch
Oct 2026Akre Focus Fund$MALong MA (Mastercard, Inc.)BullView Pitch
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Alerts, Monitoring and Weekly Updates

Subscribe and track funds to find out when fund letters drop and follow tickers to find out when your favorite stocks are mentioned.

Latest Weekly Articles

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The 1.5 Billion Barrel Illusion: Why Oil Speculators Are Making a Costly Mistake
September 3, 2026

The 1.5 Billion Barrel Illusion: Why Oil Speculators Are Making a Costly Mistake

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The Rapid Depreciation Trap: Why AI Capex Isn't Like the 1800s Railroad Buildout

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The $20B Downfall: Citadel Swallows Leopold Aschenbrenner’s Battered AI Fund
August 4, 2026

The $20B Downfall: Citadel Swallows Leopold Aschenbrenner’s Battered AI Fund

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The $2 Trillion AI Revenue Gap: Is Corporate Spending Outpacing Reality?
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The $2 Trillion AI Revenue Gap: Is Corporate Spending Outpacing Reality?

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Buyside Insights

Curated podcasts, investor writings, original insights, and timeless investment classics.

Podcasts We're Listening To

Recent episodes with investors and portfolio managers: Market Huddle, Macro Voices, Monetary Matters, Capital Allocators and more..

Substacks & Investor Writing

High-quality writing from independent analysts: PauloMacro, ToffCapital, Shrubstack and more..

BSD Weekly Insights

Original commentary on emerging themes and patterns: Our weekly curated insights delivered to your inbox.

Investment Classics

Timeless letters, memos, and essays from great investors: Classic Partnership Letters, Warren Buffett, Baupost, Graham-Newman, Scion Value and more..

Latest Research & Analysis

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InsightsSep 7, 2026

Applied Co. (TYO 3020): A Cash-Rich Japanese PC/HPC Company at ~1.5x EV/EBIT With Growing AI Exposure

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InsightsSep 7, 2026

Weekly Update 39

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InsightsSep 7, 2026

Amazon’s AI Economics

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