Latest research, educational guides, and news from the world of institutional investing.
Millennium's Q4 2025 13F reveals a $16.6B QQQ sleeve rollover, a $4.23B build in Walmart, and a portfolio that grew to $237.8B while top-10 concentration moved higher.
Citadel Advisors ended Q4 2025 with a $665.9B 13F portfolio, up 1.33% QoQ, while reducing top-position concentration. The filing shows a clear rebalance: heavier Alphabet and semiconductor exposure, paired with lower SPY/QQQ index hedge weight.
THOMA BRAVO, L.P. filed a highly concentrated Q4 2025 13F: 95.4% in SailPoint, 99.1% in top two names, and only three reported holdings. We break down what changed from Q3, why MeridianLink disappeared, and how to read sponsor-style filings versus hedge-fund-style filings.
Scion filed no Q4 2025 13F by Feb 19, 2026. Burry's final filing concentrated 96.7% into PLTR/NVDA put exposure, then the fund deregistered seven days later—an extreme final act with unusual conviction and timing.
Viking Global's Q4 2025 13F reveals a portfolio in violent transition: Amazon re-entered after Q3 exit, Meta dumped for Alphabet, banks slashed 60%, and 21 new positions opened. Inside the $37.7B fund's 56% turnover rate.
Bill Ackman's Pershing Square filed its Q4 2025 13F revealing a brand-new $1.76 billion Meta Platforms position, a 65% Amazon increase, 50% Brookfield accumulation, and a full Chipotle exit — pushing tech exposure to 55% of the $15.5B portfolio.
Renaissance Technologies' Q4 2025 13F filing reveals the most radical portfolio overhaul in years: an 85% NVIDIA slash, complete Meta exit, 749 positions liquidated, and massive defensive pivots to Costco (+5,221%) and Netflix (+2,545%) — all in the aftermath of October's devastating Quant Quake.
Bridgewater Associates 10x'd their S&P 500 ETF position to $4.8 billion — making SPY 22% of the entire portfolio. Inside the Q4 2024 13F: massive sector rotation, 168 position exits, new Tesla and Robinhood bets, and a consumer defensive retreat that reshaped a $21.8 billion fund.
A position-by-position analysis of Berkshire Hathaway's Q4 2024 13F filing. Apple selling stops at 300M shares, BAC reduction continues at -14.7%, Constellation Brands enters as the only new buy, and the top 5 holdings dominate at 72% of the $267B portfolio.
The February 14 deadline has passed and every major whale fund has filed. Berkshire stopped selling Apple at 300M shares, Bridgewater made a 10x SPY bet, Renaissance doubled down on Robinhood and Spotify, Ackman added Nike, Viking rotated massively into financials, and Burry went all-in on China. Here is what the data reveals.
We analyzed 8,541 Q4 2025 13F filings from 8,484 institutional investors to find where smart money converges — and where it diverges. From Microsoft's $264 billion in new institutional capital to the Technology sector's $1.3 trillion dominance, here's what the data reveals about Wall Street's collective positioning heading into 2026.
The February 14 deadline brought 8,400+ filings from institutional managers totaling $53.3 trillion. Renaissance Technologies and Soros Fund Management reveal dramatic portfolio shifts — while Buffett's Berkshire Hathaway filing remains the most anticipated disclosure still pending.