It's an asset and his plan is to sell them for profits sooner or later.
All I can remember is he recently added few thousand Bitcoins then market just went down, I expected to go upwards but people thought it's time to pull the string before he does.
But he might be buying more when price fell down.
If Strategy sells in a short period of time, it could be very problematic for the market, as they are a large holder of BTC, almost 500,000 BTC
half a million BTC in a scenario of a maximum of 21 million, many of which are already lost and not yet mined
It is a good security for the price of BTC, but in possible sales it could even change the direction of the market downwards