In the vast world of investing, one of the best ways to keep up with trends is to watch the behavior of the largest and most successful investors. The most recent 13-F filings are always an informational asset to keep an eye on, and right now, they’re showing that the wealthiest investors are keeping their largest bets on big tech.

The 13-F filings of multiple billionaires indicate that some of the largest investors in the market are keeping their money behind big tech. These disclosures, which are best not taken as brute data but instead as one tool in a vast array that investors use to interpret trends, are one way to keep track of the investment activity of billionaire investors.

Famous investor Warren Buffet continues to invest in Apple. According to the most recent 13-F filing by the Berkshire Hathaway company owned by Buffet, the company maintains investments that amount to a full 50% of its $313 billion portfolio. Apple continues to grow, though at a decreased rate. It does, however, have a significant supply of funds, which Buffet favors in investments.

While Buffet continues to invest in Apple, the Appaloosa hedge fund, managed by billionaire investor David Tepper, exited its position in Apple in the third quarter. However, this does not represent a loss of faith in big tech overall. Tepper’s largest investments include Nvidia, Meta, Microsoft, Amazon, and Alibaba.

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Stanley Druckenmiller, whose previous clients include George Soros and whose hedge fund, Duquesne Capital, had over $12 billion in assets when it was closed in 2010, also continues to invest in big tech. His largest investments include Nvidia, the Korean e-commerce giant Coupang, Microsoft, Eli Lilly, and Teck Resources. Druckenmiller, an investor whose career has never been marred by a losing year, is on record discussing the potential of AI. His investments reflect his hope for this technology.

This is a position shared by famous investor Bill Ackman. Disclosures show Ackman’s heaviest investments are in Alphabet Inc., better known by its brand Google.

Jim Simons, whose trading style has always leaned heavily on algorithmic interpretation of meticulous data, also continues to invest in Microsoft. According to disclosures, he has recently boosted that investment, as well as his investment in streaming giant Netflix. He continues to hold Meta and Tesla but has reduced those positions.

Big tech features highly in several exchange-traded funds (ETFs) available to investors. Apple features largely in ETFs like iShares Dow Jones US Technology ETF and Vanguard Information Technology ETF. The Fidelity MSCI Communication Services Index ETF and the Communication Services Select Sector SPDR Fund feature Meta strongly, whereas the Fidelity Information Technology Index ETF and the Technology Select Sector SPDR Fund more strongly feature Microsoft. Nvidia-strong ETFs include VanEck Semiconductor ETF and AXS Esoterica NextG Economy ETF WUGI. Alphabet is strong in ETFs like the Vanguard Communication Services ETF and the FCOM Communication Services ETF.

Many of the largest investors continue to invest heavily in big tech companies, according to 13-F filings, which are used as indicators of confidence for many in the market. The same companies also have the confidence of major ETF funds, which may draw investor activity as a result.