BLK Q1 Positions: Clearing Microsoft Call Options, Overweight AAPL and Oil Stocks

According to the disclosure of the US Securities and Exchange Commission (SEC), $Blackrock(BLK.US)$ , the world's largest asset management company, submitted a position report (13F) for the first quarter (Q1) ended March 31, 2022.
From the perspective of position preference
BlackRock favors technology stocks, accounting for 24.78% of the total position. It was followed by financials and healthcare stocks, which accounted for 15.69% and 12.86% of total holdings, respectively.
Among the top five stocks with heavy holdings
$Apple(AAPL.US)$ ranks first with about 1.028 billion shares and a market value of about $179.435 billion, accounting for 4.83% of the total market value of BlackRock’s holdings.
$Microsoft(MSFT.US)$ ranked second, holding about 524 million shares and holding a market value of about $161.477 billion.
$Amazon(AMZN.US)$ ranked third, holding about 29.1439 million shares, with a market value of about $95.008 billion.
The fourth and fifth are $Tesla(TSLA.US)$ and $Alphabet-A(GOOGL.US)$ , with a market value of about $59.528 billion and $57.581 billion, respectively.
The top 10 long positions also include
$Alphabet-A(GOOGL.US)$ , $NVIDIA(NVDA.US)$ , $Berkshire Hathaway-B(BRK.B.US)$ , $Johnson & Johnson(JNJ.US)$ , $UnitedHealth(UNH.US)$ .
In terms of position percentage change, the top five buy bids were:
$Apple(AAPL.US)$ , $Exxon Mobil(XOM.US)$ , $Chevron(CVX.US)$ , and Tesla.
The top five sell bids were:
$Meta Platforms(FB.US)$ , $SPDR S&P 500 ETF(SPY.US)$ call, $Netflix(NFLX.US)$ , $Xilinx , and $IHS MARKIT LTD(INFO.US)$ .
BlackRock opened positions in $Constellation Energy(CEG.US)$ , $BellRing Brands(BRBR.US)$ , etc. and closed positions in $Microsoft(MSFT.US)$ call, $Deere(DE.US)$ calls, etc. in the first quarter.