What is behind our Galaxy's falling share price?, page-752

I think you'll find that it is MS's hedge fund clients that are shorting the lithium stocks and not MS itself. Quite often in a prime brokerage agreement, hedge funds have to pay an additional fee if they execute with a broker other than their PB, so they tend to execute with the home broker. MS has a large HF business, so although they are executing the trades, they aren't initiating them. Similarly, Commsec may be the executing buyer, but their client is the originator of the order.