> does that mean Bloomberg is actually executing their trades, making margin loans, etc? Or is just just a standardized interface to other firms?
good question! often its a standardized interface to other firms, a "middle office" that is usually at your broker (if you're a fledgling shop) or in your own offices (if you're a bank or a bigger more established fund). yes, this means you use bloomberg as a standardized interface to your own firm. This still makes sense because its such an industry standard, and has good compliance recordkeeping. I'm sure Bloomberg could execute your trades, I've just personally never come across or met anyone that has needed that so I'd probably say that is a minority of situations. Come to think of it, I'm not sure why Bloomberg doesn't also own this market. its very standard, boring stuff.
making margin is a whole nother ball game. that's more of broker-dealer territory. again Bloomberg is so big probably some part of it does that kind of thing, but far more common you're getting that sort of thing from a broker-dealer.
> What about when traders IM each other? How does that actually become a trade? Does someone at the bank read their chat history looking for agreements to buy/sell and do the actual paperwork later?
often, yes actually. someone in the middle office looks thru your chat transcript to confirm the trades (sending paperwork over to their counterparts, making sure it's within appropriate limits and placed in the right risk accounts etc). for more standard deals you might have a STP (straight through processing system) automatically pick it up from chat (with ofc a confirmation step). i have no idea when this started, it was before my time, but this definitely predates bloomberg itself. As a currency trader at a bank we had these old ass machines (i forget their name, oops, i loved them) where you had a direct line to all other banks and could "call out" to them to deal over chat. because of the sensitive nature of these transactions (you could be dealing in billions of notional amounts), one unique nature of these chats was that they were immutable: no backspace, no edit button. this means we needed a convention to recover from typos. this often worked out as spamming EEEEE after a mistake, e.g. "Hi I buy 200 EUR at 45EEEEEE43 pls thx". Sometimes flagrant mistakes aren't caught either, so there's a sort of gentleman's agreement thing if you spot your counterpart making a mistake in your favor, you ask them if they're sure or to double check, and if they're sure then you take the deal.
kinda rickety, but it worked. this is how much of institutional block trading is still done today* , but ofc more and more is taken over by bots.
*caveat that i'm about 4 years out of the business now
good question! often its a standardized interface to other firms, a "middle office" that is usually at your broker (if you're a fledgling shop) or in your own offices (if you're a bank or a bigger more established fund). yes, this means you use bloomberg as a standardized interface to your own firm. This still makes sense because its such an industry standard, and has good compliance recordkeeping. I'm sure Bloomberg could execute your trades, I've just personally never come across or met anyone that has needed that so I'd probably say that is a minority of situations. Come to think of it, I'm not sure why Bloomberg doesn't also own this market. its very standard, boring stuff.
making margin is a whole nother ball game. that's more of broker-dealer territory. again Bloomberg is so big probably some part of it does that kind of thing, but far more common you're getting that sort of thing from a broker-dealer.
> What about when traders IM each other? How does that actually become a trade? Does someone at the bank read their chat history looking for agreements to buy/sell and do the actual paperwork later?
often, yes actually. someone in the middle office looks thru your chat transcript to confirm the trades (sending paperwork over to their counterparts, making sure it's within appropriate limits and placed in the right risk accounts etc). for more standard deals you might have a STP (straight through processing system) automatically pick it up from chat (with ofc a confirmation step). i have no idea when this started, it was before my time, but this definitely predates bloomberg itself. As a currency trader at a bank we had these old ass machines (i forget their name, oops, i loved them) where you had a direct line to all other banks and could "call out" to them to deal over chat. because of the sensitive nature of these transactions (you could be dealing in billions of notional amounts), one unique nature of these chats was that they were immutable: no backspace, no edit button. this means we needed a convention to recover from typos. this often worked out as spamming EEEEE after a mistake, e.g. "Hi I buy 200 EUR at 45EEEEEE43 pls thx". Sometimes flagrant mistakes aren't caught either, so there's a sort of gentleman's agreement thing if you spot your counterpart making a mistake in your favor, you ask them if they're sure or to double check, and if they're sure then you take the deal.
kinda rickety, but it worked. this is how much of institutional block trading is still done today* , but ofc more and more is taken over by bots.
*caveat that i'm about 4 years out of the business now