Sarah Mitchell
Education Editor
Investment Education Editor at 13F Insight. Breaks down complex institutional data into actionable insights for individual investors.
A note from Sarah
Hi, I'm Sarah. I spent four years at Vanguard's Investor Education team, where my whole job was making 401(k) statements feel less like tax forms and more like something a person could actually understand.
I'm here at 13F Insight to do the same thing for institutional data. If you've ever read a headline like "Berkshire Bought Apple" and thought "okay but what does that actually mean for me," that's the gap I want to close.
I'll never assume you know what a CUSIP is. I'll always tell you why a number matters before I give you the number. And if a guide of mine ever leaves you more confused than you started, that's on me — let me know and I'll rewrite it.
Articles by Sarah Mitchell (818)
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Restaurant Chain 13Fs: MCD, SBUX, CMG Reading Guide
McDonald's, Starbucks, Chipotle Mexican Grill, Yum! Brands, and Darden Restaurants anchor US restaurant chain 13F positioning. Same-store sales cycles, unit growth, franchise-vs-company-operated mix, and labor cost dynamics drive distinctive institutional patterns.
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Cruise Line 13Fs: CCL, RCL, NCLH Decoder & Yield Patterns
Carnival Corporation, Royal Caribbean, and Norwegian Cruise Line anchor US cruise 13F positioning. Net yield trajectory, occupancy cycles, fuel cost dynamics, and post-COVID demand recovery drive distinctive institutional patterns.
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Casino 13Fs: LVS, WYNN, MGM Decoder & Macau-Vegas Split
Las Vegas Sands, Wynn Resorts, MGM Resorts, and Caesars Entertainment anchor US casino 13F positioning. Macau-vs-Vegas revenue split, regulatory-license cycles, and capital-intensity dynamics drive distinctive institutional patterns.
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Hospital Operator 13Fs: HCA, UHS, Tenet Healthcare Decoder
HCA Healthcare, Universal Health Services, Tenet Healthcare, and Community Health Systems anchor US hospital-operator 13F positioning. Medicare-and-Medicaid reimbursement cycles, payor-mix dynamics, and labor-cost cycles drive distinctive institutional patterns.
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Tobacco 13Fs: PM, MO, BTI Reading Guide & Yield Patterns
Philip Morris International, Altria, and British American Tobacco anchor US tobacco 13F positioning. Sustainable 5-9% dividend yields, declining volume cycles, and ESG-exclusion frameworks drive distinctive institutional patterns. Income managers concentrate; ESG-mandated funds exclude.
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Aerospace & Defense 13Fs: LMT, NOC, GD, RTX Reading Guide
Lockheed Martin, Northrop Grumman, General Dynamics, RTX, and Boeing anchor US aerospace and defense 13F positioning. Multi-year defense budget cycles, FMS export wins, and program milestones drive distinctive institutional positioning patterns.
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REIT 13F Reading: Vanguard, Equinix, Prologis, Realty Income
Equinix, Prologis, American Tower, Realty Income, and Simon Property Group anchor the REIT institutional positioning landscape. Vanguard Real Estate ETF (VNQ) shows the passive baseline; active managers concentrate selectively on data-center, industrial, and net-lease subsectors.
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Cyclical Equipment 13Fs: DE, CAT, ITW, NUE Reading
Deere, Caterpillar, Illinois Tool Works, and Nucor sit at the center of US industrial-cycle 13F positioning. State Farm Mutual holds CAT at 8.13% portfolio. Capital World holds DE at 0.94%. Clearbridge holds WMB at 1.48%. Here's the framework for reading cyclical-equipment institutional positioning.
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AI-Power 13F Thesis: TLN, CEG, VST, NEE Reading Guide
MFN Partners holds Talen Energy at 20% portfolio. AI data-center power demand drives Talen, Constellation Energy, Vistra Corp, and NextEra Energy 13F positioning. Here's the structural framework for reading the AI-power thesis across electric-utility 13Fs.
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Warrants in 13Fs: OXY/WS, BAC Warrants Reading
MFN Partners holds OXY warrants at 5.11% portfolio. Berkshire held Bank of America warrants from the 2011 financing before exercising. Warrants in 13F filings reflect long-dated leveraged equity exposure with distinctive structural characteristics. Here's the framework.
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Reading Spin-Off Concentration in 13Fs: XPO/RXO, GE/SOLV, FNF/FG
XPO spun off RXO in 2022 and GXO in 2021. GE spun off Solventum (SOLV) from 3M in 2024. Fidelity National Financial spun off F&G in 2022. Spin-off concentration in 13Fs creates distinctive holder structures requiring different reading rules.
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Alt-Asset Platform 13Fs: KKR, Blackstone, Apollo, Ares Reading
KKR, Blackstone, Apollo, Ares Management operate publicly listed alternative-asset platforms. Their 13F holder books reflect institutional confidence in the multi-decade transition from carry-revenue to fee-revenue plus insurance-platform integration. Here's the framework.
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Single-Executive Thematic 13Fs: Brad Jacobs, Ackman, Klarman
MFN Partners runs 65% of its $4.77B 13F across three Brad Jacobs-led companies. Pershing Square concentrates in Bill Ackman's selected names. Baupost holds Seth Klarman's value-discipline picks. Single-executive thematic 13Fs require different reading rules than diversified active books.
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Dual-ETF S&P 500 Allocation: Why Kedalion Holds IVV + SPYM
Kedalion Capital holds 56% IVV and 39% SPYM — two separate S&P 500 ETFs at near-identical expense ratios. The dual allocation enables tax-loss harvesting between positions, account-level diversification, and reduced market-impact during rebalancing. Here's the structural logic.
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Cybersecurity Vendor 13Fs: PANW, CRWD, FTNT, S, ZS Reading
The AI cybersecurity threat cycle drives institutional positioning into Palo Alto Networks (PANW), CrowdStrike (CRWD), Fortinet (FTNT), SentinelOne (S), Zscaler (ZS). Morgan Stanley holds PANW at 0.34% portfolio. Jennison holds CRWD at 1.55% portfolio. Here's the framework.
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Managed Care 13Fs: UNH, ELV, HUM, CI Post-v28 Repricing
The 2024 v28 Medicare Advantage repricing reshaped institutional positioning across UnitedHealth, Elevance, Humana, and Cigna. Dodge & Cox holds Humana at 1.08% portfolio in value-discipline overweight. Wellington and Capital World hold UNH overweight. Here's the framework.
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Semi-Equipment 13F Reading: AMAT, LRCX, KLAC, ASML
The AI capex cycle flows through semiconductor equipment suppliers. Applied Materials, Lam Research, KLA Corp, ASML, and Tokyo Electron capture economics on every new fab capacity addition. Capital Research, Arrowstreet, and other institutional managers concentrate in these names at meaningful weights.
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Exchange Operator 13Fs: NYSE Parent (ICE), CME, Cboe, Nasdaq
ICE, CME Group, Cboe Global Markets, and Nasdaq operate the regulated US exchange infrastructure. Their 13F holders include concentrated quality-discipline managers like Harris Associates, PineStone, and BLS Capital. Reading exchange-operator 13Fs requires understanding regulated-monopoly economics.
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Pure-Beta Wealth Manager 13Fs: Kedalion, Matson, Constellation
Kedalion holds 96% in S&P 500 ETFs. Matson Money holds 14% IVV plus broad ETF spread. Constellation Investments runs 96%+ ETFs. Pure-beta wealth managers run 13Fs that look unlike anything an active manager files. Here's how to read them.
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M&A-Driven 13F Positions: Deal Consideration Equity Stakes
MUFG holds 76% of its US 13F in US Bancorp from the 2022 Union Bank sale. Chevron's 2025 Hess acquisition produced legacy founder-family positions. Strategic-stake equity consideration from M&A deals creates a distinctive 13F category requiring different reading rules.