Options expiration doesn't explain the "jerking" down of the share price...
There was manipulation to accompany the expiration. Why? Nobody has answered that other than to point out the obvious options expiration which benefited long holders much more than those playing the short side. My opinion is that 10% of a company's float doesn't change hands because of options expiration unless a huge event is about to occur.
one odd thing i saw on my stock account was it had been reporting insm with around 18.5 million shares of insider holdings summary.
Friday before the sell off it was reporting around 20.5 million shares.
just thought it was a little odd this was about the same amount of shares traded before and after the sudden drop.
about a 2 million share difference before it happened.