Sec reporting requirement I believe are Purchases greater than 5% are required to be reported on 13 D 45 days after the end of the quarter
Other reporting rules are accelerated if the ownership goes above 10%
Consequently a company can only buy about 10% before any accumulation is well known and they would “still have to pay up” to control the company. Also I believe on a buyout they would want to control more than 51%
Also there were about 36 million shares of shorts out there 15 days ago
Early sellers will not get the value of to $60-$80 a share that it will ultimately take to purchase a significant ownership of the company