According to the regulations of the USA SEC, institutions with an asset management scale exceeding 0.1 billion usd must submit a form 13f report within 45 days after the end of each quarter, disclosing all managed equity asset holdings.

Currently, the vast majority of US stock investment institutions have disclosed their holdings as of September 30, 2024, including wells fargo & co, citigroup, and bank of america, which sold technology stocks during the third quarter. However, it is unclear whether this is due to a change in investment logic or is part of a planned exposure to portfolio risk.

Bank of America: Microsoft firmly holds the top position among heavy holdings.

According to SEC disclosures, in the third quarter, bank of america's total holding market value reached 1.2 trillion usd, an increase from the previous quarter's 1.13 trillion usd.

In the third quarter, 463 new positions were established, 4243 positions were increased, 2931 positions were reduced, and 512 positions were liquidated.

The top ten holdings of bank of america account for 15.98% of the total market value, which are microsoft, nvidia, Vanguard value stock etf, apple, nasdaq 100 index etf put options, SPDR s&p 500 index etf, Vanguard growth stock etf, ishares s&p 500 index etf, ishares trust core msci eafe etf, and Vanguard s&p 500 index etf.

From the changes in hold positions, the top five buy symbols are iShares S&P 500 ETF, iShares 20+ Year U.S. Treasury Bond ETF, SPDR S&P 500 ETF put options, nvidia, and nvidia put options.

At the same time, bank of america also reduced its shareholding in apple in line with Buffett, with the latest hold positions of approximately 80.89 million shares, a market value of about 18.8 billion usd, accounting for 1.56% of the portfolio, with a decrease in hold positions of 34.04% compared to the previous quarter.

In addition to apple, bank of america also reduced its shareholding in amazon, nasdaq 100 index ETF put options, eli lilly and co, and american express in the third quarter.

Wells Fargo & Co: reduced holdings in microsoft and apple.

In the third quarter of this year, wells fargo holdings had a total market value of 442 billion usd, an increase of 7.3% compared to the previous quarter's 412 billion usd. Among them, wells fargo established new positions in 450 stocks, increased holdings in 2923 stocks, reduced holdings in 2694 stocks, and cleared positions in 410 stocks.

However, among the "Seven Giants", wells fargo & co only increased holdings in tesla (21.75%), amazon (7.13%), nvidia (5.65%), meta (1.81%), google-A (1.64%), and google-C (0.78%) in the third quarter, while reducing holdings in microsoft (2.06%) and apple (1.31%).

In the third quarter, the top five buy symbols for wells fargo & co were iSharesE-mini Russell 2000 Index ETF put options, broadcom, ishares s&p 500 index etf, ishares broad usd high yield corporate bond etf, and tesla.

The top five sell symbols were microsoft, spdr s&p 500 index etf put options, ishares treasury bond etf, spdr s&p 500 index etf, and pimco etf trust enhanced short maturity etf.

Citigroup: Significantly increased holdings in tesla and reduced holdings in microsoft.

The form 13f report submitted by citigroup shows that the total market value of holdings in the third quarter reached 173 billion usd, up from 156 billion usd in the previous quarter, reflecting a growth of 11%. In the third quarter, 394 new stocks were added, 3271 stocks were increased, 1444 stocks were decreased, and 288 stocks were completely sold.

The top ten holdings account for 20.76% of the total market value, mainly including put options on the e-mini russell 2000 index etf, put options on the nasdaq 100 index etf, nvidia, apple, microsoft, call options on the nasdaq 100 index etf, amazon, call options on the e-mini russell 2000 index etf, tesla, and put options on the s&p 500 etf.

In addition, citigroup's top five buy symbols are the sse industrial index etf-put options, the sse industrial index etf-call options, caterpillar, tesla, and put options on apple; the top five sell symbols are call options on the nasdaq 100 index etf, microsoft, put options on the nasdaq 100 index etf, call options on the ishares broad usd high yield corporate bond etf, and the e-mini russell 2000 index etf.