Replies to post #10601 on Sigma Labs Inc (SASI)

[r0und3r]

MM = Market Maker
Here is a good inside look about how MMs work behind the scenes.

http://shockertrades.blogspot.com/2011/05/market-maker-speaks-out-ways-of-market.html?m=1

[Windbag1014]

MM = Market Maker

"In the United States, the New York Stock Exchange (NYSE) and American Stock Exchange (AMEX), among others, have Designated Market Makers, formerly known as "specialists", who act as the official market maker for a given security. The market makers provide a required amount of liquidity to the security's market, and take the other side of trades when there are short-term buy-and-sell-side imbalances in customer orders. In return, the specialist is granted various informational and trade execution advantages."

http://en.wikipedia.org/wiki/Market_maker

The theory is they help provide liquidity. In real life, they have a stake in the tickers they make markets in. Where we see level 2 they see more.