Research

Maverick Capital's $9.3B Tactical Reset: Lee Ainslie's Q4 2025 AI Pivot

Maverick Capital reported a $9.32B portfolio in Q4 2025, revealing a disciplined rotation into AI infrastructure and semi-conductor giants.

Marcus Chen

Ameriprise Financial Inc. Q4 2025 13F Analysis: A $442B Portfolio Refresh

Ameriprise Financial Inc. revealed a massive $442.51B portfolio in Q4 2025, showing a significant tactical pivot into mega-cap technology.

Marcus Chen

Saba Capital's Q4 2025 Overhaul: Boaz Weinstein's $3.37B Pivot into Closed-End Funds

Saba Capital Management executed a massive portfolio rotation in Q4 2025, initiating new top-tier positions in several closed-end funds including ECAT and NFJ.

Marcus Chen

Bank of America Q4 2025 13F: A Study in Diversified Institutional Strategy

Marcus Chen

JPMorgan Chase Q4 2025 13F: Strategic Institutional Weight Shifts

Marcus Chen

Morgan Stanley Q4 2025 Analysis: Tech-Heavy Mega-Portfolio Strategy

Marcus Chen

BlackRock, Inc. Q4 2025: Analyzing the Tactical Shifts of a .92 Trillion Giant

BlackRock's Q4 2025 filing reveals a massive .92T portfolio with significant concentration in AI and mega-cap tech. We dive into the data to see what the world's largest asset manager is doing.

Marcus Chen

Goldman Sachs Q4 2025 13F: Navigating the AI Frontier with $815 Billion in Assets

Goldman Sachs maintains a massive $815 billion 13F portfolio, with its top bets focused squarely on the leaders of the artificial intelligence revolution.

Marcus Chen

JPMorgan Chase Q4 2025 13F: A $1.59 Trillion Strategy Focused on Mega-Cap Tech

JPMorgan's latest 13F filing reveals a massive $1.59 trillion portfolio with a sharp focus on AI leaders and mega-cap technology giants.

Marcus Chen

Concentrated vs. Broad Whale Books: How Five Giant Filers Approached Q4 2025

A five-filer comparison shows why Berkshire looked like a conviction allocator while the giant diversified managers kept much broader top books in 2025Q4.

Marcus Chen

Partners Value Investments Ran a 2025Q4 Filing That Was 92.9% Brookfield

Partners Value Investments L.P. reported a $10.70B book for 2025Q4 with BN and BAM absorbing nearly all of the economic weight. It is a useful example of how a corporate-family filing can still deliver a very strong concentration signal.

Marcus Chen

H&H International Rebuilt a 2025Q4 Book Around a 50.3% Apple Weight

H&H International Investment, LLC ended 2025Q4 with $17.49B in 13F assets, and Apple alone represented 50.3% of the filing. The top five names took 89.5% of weight, making the quarter one of the sharper concentrated rebounds in the whale-score cohort.

Marcus Chen

Saudi Arabia's Public Investment Fund Cut Down to a Two-Name Core in 2025Q4

Public Investment Fund's 2025Q4 filing shrank to five positions and concentrated 85.2% of assets in Uber and Electronic Arts. That makes the quarter more useful as a conviction map than as a broad market survey.

Marcus Chen

Newlands Ran a 17-Stock Growth Book in Q4, With Meta Still at 33.3%

Newlands Management Operations LLC ended 2025Q4 with $19.40B in 13F assets and a very narrow growth stack led by Meta, Robinhood, and Alphabet. The top five names consumed 74.4% of the portfolio, leaving almost no room for filler positions.

Marcus Chen

Brookfield Built a 2025Q4 Filing Where BAM Alone Took 77.4% of Weight

Brookfield Corp /ON/ reported an $80.76B 13F book for 2025Q4, and Brookfield Asset Management dominated the filing at 77.4% of weight. The remaining positions matter, but they read more like supporting pieces than co-equal bets.

Marcus Chen

Lilly Endowment Kept 100% of Its 13F Book in Eli Lilly in 2026Q1

Lilly Endowment reported an $84.52B 13F portfolio for 2026Q1, and every dollar of it still sat in Eli Lilly. The filing is unusually simple, which is exactly why it makes such a strong case study in institutional concentration.

Marcus Chen

70 New Positions At Wellington, 41 At Capital World: The Q4 2025 Whale Rotation Scoreboard

The most useful 2025Q4 question was not just who owned the biggest stocks. It was which large managers rotated the hardest beneath the surface. This scoreboard compares four major 13F portfolios side by side.

Marcus Chen

Four Whale Funds Put More Than $138B Into Broadcom In Q4 2025

Broadcom remained the clearest single-stock anchor across several major 13F portfolios in 2025Q4. The weight, not just the dollar total, explains why AVGO kept showing up at the top of institutional books.

Marcus Chen

Three Whale Funds Held More Than $14B Of Netflix After Aggressive Q4 2025 Adds

Capital World Investors, Capital Research Global Investors, and Wellington all expanded Netflix exposure in 2025Q4. The combined value reached more than $14B, but the intensity of the adds differed sharply.

Marcus Chen

Four Whale Funds Put Nearly $493B Into The AI Mega-Cap Five In Q4 2025

Across four major 13F managers, Apple, Microsoft, Nvidia, Broadcom, and Amazon absorbed nearly $493B of disclosed capital in 2025Q4. The basket was broad, but it was not evenly distributed.

Marcus Chen