AlphAIalphai — Financial news for AI agents
insidermonkey.comSEP 42 min read$NBIS

Billionaire Stephen Mandel’s Top 2 AI Stock Picks

Billionaire Stephen Mandel's Lone Pine Capital opened new positions in Nebius Group (NBIS) and Seagate Technology (STX) in Q2. NBIS is the largest holding, with $1.18B invested, while STX saw $965.1M invested. NBIS reported a 454% revenue increase YoY to $582.3M, driven by high demand for AI cloud services. However, the company faces risks related to high capital expenditures and potential delays in data center construction.

Original reporting
insidermonkey.com
Published Sep 4, 2026, 2:45 PM UTC
Analysis
alphai AI DeskAI-generated
Added to alphai Sep 4, 2026, 3:31 PM UTC. Informational, not investment advice.
How this was made
alphai summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
About alphai AI DeskScoring methodologyReport an issue
Billionaire Stephen Mandel’s Top 2 AI Stock Picks — source image
Source · insidermonkey.com
Decision brief

The 30-second read

$NBISBullishMed
01

Why it matters

Fund's sizable allocation may act as a catalyst for both stocks, indicating strong belief in AI demand growth.

02

Market read

First public disclosure of large fund stakes in two AI infrastructure stocks, potentially influencing investor sentiment and price action.

03

What to watch

Potential execution risks in building new data centers and GPU supply constraints.

Relevance 8/10Novelty 8/10Timing: post-filing disclosure

Background

The article reports Lone Pine Capital's Q2 filing revealing new large positions in AI cloud infrastructure firms NBIS and STX.

Company-level read

Ticker impact

$NBISBullishHigh confidence
Context

Lone Pine Capital disclosed a $1.18 billion purchase, 7.19% of its portfolio, in Q2 filing.

Expected impact

Potential short-term upside as market absorbs the sizable buy.

Evidence & confidence

Fund size and allocation magnitude are material; first public disclosure of the position.

$STXBullishHigh confidence
Context

Lone Pine Capital disclosed a $965.1 million purchase, 5.90% of its portfolio, in Q2 filing.

Expected impact

Likely modest price support; investors may view as endorsement of AI storage demand.

Evidence & confidence

Substantial fund allocation disclosed for the first time; material impact potential.

Market effects

Sector

Highlights growing capital inflows into AI cloud infrastructure and storage providers.

Regional

May influence US tech and semiconductor sector sentiment.

Global

Signals confidence in AI demand, potentially affecting global AI hardware supply chains.

Counterpoint

What could challenge this read

High capex requirements and pricing pressure could strain margins if AI spending slows.

Key entities

  • Hedge Fund
    Lone Pine Capital

    Founder Stephen Mandel's investment firm, disclosed new AI positions.

  • Company
    Nebius Group N.V.

    AI cloud infrastructure provider listed on NASDAQ (NBIS).

  • Company
    Seagate Technology Holdings plc

    Data storage company listed on NASDAQ (STX).

Read at source← All news

Related articles

SEP 3
$CRWVMed

Should CoreWeave and Nebius Group Investors Be Worried About Circular Financing? Here's What the Numbers Say

CoreWeave (CRWV) and Nebius Group (NBIS) are involved in circular financing with Nvidia, raising concerns among investors. CoreWeave's revenue grew to $2.5B last quarter, but it has $35B in debt. Nebius reported $582M in revenue, up 454% YoY, and plans significant capital expenditures. Both companies rely on Nvidia's support and future AI demand to sustain growth.

fool.com4 min
SEP 2
$CRWVHighAI 9/10

NBIS, IREN, CRWV At Risk? OpenAI Co-Founder Warns AI Agents Could Turn Neoclouds Into Cybersecurity Targets — Palo Alto CEO Offers Fix

Ilya Sutskever, OpenAI co-founder, warned neoclouds like CoreWeave, Nebius, and IREN could become cybersecurity targets if AI agents operate autonomously. Palo Alto Networks CEO Nikesh Arora offered assistance. CoreWeave, Nebius, and IREN reported significant revenue growth in AI cloud services. Shares of these companies were down 1.3% to 1.5% in overnight trading.

newsable.asianetnews.com2 min
SEP 1
$NBISHighAI 8/10

End Power Target From More Than 3 Gigawatts to 5 in 6 Months

Nebius Group (NASDAQ:NBIS) raised its year-end contracted power target to 5 GW, up from 3 GW in February. Q2 revenue grew 454% YoY to $582M. The company's AI cloud deals average $20M-$25M annual contract value per megawatt. Nebius has a market cap of $56B and expects $20B-$25B in capital expenditures for 2023.

aol.com3 min
SEP 1
$NBISMedAI 8/10

What to Understand Before Buying Nebius

Nebius Group (NBIS) reported 454% revenue growth in Q2, with $37.5B in remaining performance obligations. Three customers account for 59% of revenue. The stock is up 146% YTD, but faces risks like high customer concentration, capital intensity, and a forward P/E of 68. Management raised its power target and noted potential to sell 2027 GPU capacity. Analysts have mixed views on the stock's valuation and future performance.

aol.com3 min
SEP 1
$STXMedAI 8/10

Forget Nvidia. This AI Stock Is Selling the Storage Behind the Boom

Seagate Technology (STX) shares have surged 202% YTD and 385% over the past year, driven by AI-related storage demand. CEO Dave Mosley highlights long-term demand for mass-capacity storage. Fiscal 2026 revenue grew 34% to $12.2B, with Q4 EPS beating estimates. Analysts see 36% upside to a $1,125 target, citing strong hyperscaler demand, HAMR tech, and margin expansion.

247wallst.com3 min
AUG 31
$IRENMed

Why Investors Should Buy IREN Limited Over Nebius

IREN Limited (IREN) reported Q2 revenue of $137.2M, missing estimates, with a $684M net loss due to mining hardware impairments. Nebius Group (NBIS) saw revenue surge 454% YoY to $582.3M, beating estimates. IREN is pivoting to AI cloud, while Nebius secured large AI contracts. IREN's CEO highlights capital efficiency, but Nebius shows strong growth and pricing power.

yahoo.com2 min