When variation margin attacks: Difference between revisions

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Since, like Captain Redbeard Rum, your loyal contrarian is going to run against what all the other captains will tell, you, let me set the scene with a story.
Since, like Captain Redbeard Rum, your loyal contrarian is going to run against what all the other captains will tell, you, let me set the scene with a story.


==Once upon a time==
==Once upon a time in America==
{{quote|''Shares of ViacomCBS closed down 9% Tuesday, a day after the company said it would raise $3 billion from stock offerings. The stock offerings come just a few weeks after the company launched its Paramount+ streaming service, and the offerings will help the company bulk up its content. ViacomCBS said it would use the funds to power “investments in streaming,” among other general corporate purposes.''
{{quote|''Shares of ViacomCBS closed down 9% Tuesday, a day after the company said it would raise $3 billion from stock offerings. The stock offerings come just a few weeks after the company launched its Paramount+ streaming service, and the offerings will help the company bulk up its content. ViacomCBS said it would use the funds to power “investments in streaming,” among other general corporate purposes.''
:—CNBC, March 23, 2021}}
:—CNBC, March 23, 2021}}
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Now here is an interesting thing. Because [[Archegos]] gained their market exposure using [[Equity derivatives|swaps]], ''by regulation'', their brokers were ''obliged'' to pay the value of their net equity to them, every day, in the form of [[variation margin]]. To be sure, [[VM]] is typically paid into an account with the broker, and net equity takes initial margin into account — [[initial margin]] is another story altogether — that cash balance, over required initial margin, is available to be drawn down on request.  
Now here is an interesting thing. Because [[Archegos]] gained their market exposure using [[Equity derivatives|swaps]], ''by regulation'', their brokers were ''obliged'' to pay the value of their net equity to them, every day, in the form of [[variation margin]]. To be sure, [[VM]] is typically paid into an account with the broker, and net equity takes initial margin into account — [[initial margin]] is another story altogether — that cash balance, over required initial margin, is available to be drawn down on request.  


''This is very different from cash margin lending''. Had Archegos put the equivalent ''physical'' positions on, using [[margin loan]]s, its brokers would ''not'' have ''had'' to advance it the cash value of its net equity. They may well have done so, of course – but the right to gracefully decline is a powerful thing. While lending on margin against net equity is how [[prime broker]]s make their money, there are times when you might want to pull in the horns. Especially if — as, per the chart — your client’s positions in thinly traded stocks have rallied enormously against the rest of the market. What goes up must come down; what goes up ''quickly'' tends to come down ''even more quickly''.
''This is very different from cash margin lending''. Had Archegos put the equivalent ''physical'' positions on, using [[margin loan]]s, its brokers would ''not'' have ''had'' to advance it the cash value of its net equity. They may well have done so, of course – but the right to gracefully decline is a powerful thing. While lending on margin against net equity is how [[prime broker]]s make their money, there are times when you might want to pull in the horns. Especially if — as, per the chart — your client’s positions in thinly traded stocks have rallied enormously, inexplicably, against the rest of the market. What goes up must come down; what goes up ''quickly'' tends to come down ''even more quickly''. And so it transpired


Even in the
Even in the