Please watch the Wolf of Wall Street.
Bitcoin and alts are all pink sheet penny stocks. Wall Street's increasing attraction to bitcoin should frighten, not excite.
The average market cap. of pink sheet stocks is roughly $180,000,000. Bitcoin is roughly $10,000,000,000 or about 55X the average pink sheet stock. That means 55X the capital required to manipulate it.
Pink sheet stocks often represent companies with 0 track record of any success. Bitcoin is proving quite useful. How many pink sheet companies do you think are used by millions of people?
Pink sheet stocks are commonly pumped and dumped by the issuing company, not the holders. Bitcoin operates by an incorruptible and publicly audited set of business rules, and could not pump and dump itself if it wanted to.
Every day that passes, Bitcoin separates itself further and further from being anything comparable to a pink sheet stock.
That being said, I'm not sure how I feel about Wall Street getting involved. I don't think heavy speculation is the best thing for bitcoin, but I think it will be ok. The USD makes up 43.5% of the $5.3 TRILLION DAILY ForEx volume, and it's doing just fine.