Quote from rcj:
short against the box is NOT simultaneously holding a long
and short position in a stk.
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definition of short selling against the box
" The act of short selling securities that you already own. This results in a neutral position where your gains in a stock are equal to the losses. For example, if you own 100 shares of ABC and you tell your broker to sell short 100 shares of ABC, you have shorted against the box.
What are you referring to?
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Z ... Yes, of course, that's pertty much the standard definition of what it means to " short against the box". An explanation of
shorting the box is not at issue here.
You are NOT taking/holding two positions at the same time when you short against the box. When you do the second transaction
the result is you have no position.(see Don's msg above)
As someone pointed out earlier one can certainly initiate two orders, say, 100sh short and 100 sh long for the same stk.
Seems like i recall on ET someone saying that, on their trading platform that both sides of an executed box would sit/show on their trading page. But, the reality is they are flat as Don stated.
On IB's platform, executing a box will "zero" you out. No position.
Of course, one could, with identically registered accts at different brokers, hold a long position in one and a short position in the other. I believe this could bring about fines(at least) if caught.
... rj