Billionaire Investor Seth Klarman’s Top 5 Stocks: Would He Buy More Today?
A 13F filing shows Seth Klarman’s Baupost Group’s five largest long common-stock holdings as of March 31, 2026. The article highlights Wesco (WCC) data-center sales up 70% YoY, Amazon (AMZN) AWS growth 28%, Elevance (ELV) managed-care reversal, Restaurant Brands (QSR) cash flow, and Union Pacific (UNP) Norfolk Southern deal optionality.
How this was made
The 30-second read
Why it matters
It frames near-term trading interest around AI capex read-through (WCC, AMZN), a managed-care margin reversal (ELV), franchise cash flow (QSR), and M&A optionality (UNP). However, it does not clearly introduce a single new, time-critical disclosure beyond the cited results/guidance.
Market read
Useful as a thematic watchlist anchored to specific operating metrics and guidance, but it reads more like a promotional 13F interpretation than a fresh market-moving event.
What to watch
Regulatory and margin outcomes are path-dependent. For UNP, deal optionality hinges on specific regulatory milestones not detailed here. For ELV, benefit expense ratio dynamics may remain volatile despite guidance raises.
Background
The piece attributes a “Klarman playbook” to Baupost’s latest 13F and then highlights five holdings with supporting operating and guidance datapoints.
Ticker impact
Article cites Wesco data-center sales up ~70% YoY, backlog record, and raised 2026 adjusted EPS guidance to $15-$17.
Likely supports upward bias, but magnitude depends on whether guidance and backlog are already priced.
The text provides specific operating metrics and guidance, but it is presented as part of a 13F-driven “top stocks” narrative rather than a standalone fresh filing or event.
Article highlights AWS growth of 28% and a Q1 2026 EPS beat, plus Q2 sales guidance of $194-$199B.
Near-term sentiment tailwind; incremental impact likely limited if these figures are already known from prior reporting.
The article includes concrete earnings/guidance numbers, but it is still a promotional 13F “top stocks” framing rather than a clearly new disclosure.
Article says Elevance’s July 15 earnings showed benefit expense ratio 89.7% and stock fell -11.31% over one week.
Could see mean-reversion interest, but near-term risk remains tied to margin trajectory.
The text provides specific margin and guidance details, yet it is not clear this is a newly released catalyst within the article timeframe.
Article reports Q1 2026 Burger King US comps +5.8%, Tim Hortons comps +1.6%, and free cash flow $169M up 212.96%.
Moderate upside bias, but the article also notes shares are already up and model assigns only limited upside.
The operating datapoints are specific, but the piece is ultimately a portfolio-style writeup with model-based targets rather than a new corporate event.
Article claims Union Pacific is in regulatory process to acquire Norfolk Southern to create a transcontinental railroad.
Deal-related headlines could drive volatility; directionally positive if regulatory path improves.
The article provides deal framing and some operating metrics, but it does not disclose a new regulatory milestone or approval in the text.
Market effects
AI data-center capex supply chain sentiment could strengthen for electrical and communications distributors if the growth/backlog narrative holds.
Primarily US-focused equities; potential spillover to industrial and rail freight sentiment.
Limited direct global linkage, though AI infrastructure demand is globally relevant.
Counterpoint
The article is a 13F “top stocks” narrative that may overstate incremental edge; many cited figures appear to be from already-reported periods, and model upside targets may not be actionable without fresh catalysts.
Key entities
- public_companyWesco International
Electrical and communications distributor positioned as a data-center capex beneficiary with raised 2026 adjusted EPS guidance.
- public_companyAmazon
AWS growth and earnings/guidance used as demand signal for AI infrastructure buildout.
- public_companyElevance Health
Managed-care name framed as a value reversal after margin pressure and guidance raise.
- public_companyRestaurant Brands International
Franchise cash-flow compounder highlighted via comps and free cash flow growth.
- public_companyUnion Pacific
Rail operator framed as an M&A optionality trade tied to regulatory process for Norfolk Southern acquisition.
