I don't think the price will necessarily fall if Satoshi is found. However, if the Bitcoin addresses that are supposedly attributed to him are used, then the price would drop because there would be the potential that the market would be flooded with new Bitcoins.
Even if Satoshi mentioned that he might tap into those Bitcoins, it could make the price drop.
Is there a list available that claims to show addresses owned by Satoshi?
It's quite hard for someone to create such a list as we can't really identify which address really belongs to Satoshi. First mined blocks are the only target to identify some of them according to this quote from Hal Finney :
When Satoshi announced the first release of the software, I grabbed it right away. I think I was the first person besides Satoshi to run bitcoin. I mined block 70-something, and I was the recipient of the first bitcoin transaction, when Satoshi sent ten coins to me as a test.
As we can see, at least the first 60 to 70 blocks were mined by Satoshi and the addresses belong to him. You can check them using any blockchain explorer :
https://www.blockchain.com/btc/block/1 This is the first block which should be unspendable output as set by Satoshi in the bitcoin protocole.
Some researchers
found that Satoshi mined by himself from block 0 upto block 36288.