Sure.
Say there's a stock, and on average it trades 100,000 shares per day. And then one day, we see large orders, someone actively buying shares on the offer, about 450,000. And then the day after the stock jumps up on being acquired. The odds are very high that someone new ahead of time.
The same thing happens in the options market. The COMS options market is relatively dull. It doesn't trade much, and there are not that many contracts open. Then all of a sudden a player goes out and buys 6,000 calls, half of which expire in 10 days. These contracts give them the right to buy COMS at $5 a share.
The volume traded today was about 17x normal, and these contracts were bought to open.
So at 12PM a trade came out and bought 3800 Nov 5 Calls for 0.65. They also bought 3100 Dec Calls for .80. I'm sure this wasn't a calendar spread as the November calls were bought not sold.
So someone put about 500k down on a very speculative bet. And now the name is up 35% aftermarket.
Not including any premium, the contracts are now worth about 2.70. So they made about 1.5M, or a 300% return overnight.
Anyways, I just laid out the premise for an SEC investigation (and hopefully) prosecution. If they don't they're either cowards or stupid.