Sentence:  So when my 69,000 shares are printed in the BBH market, it not only draws attention, but makes the <WSD>sell side</WSD> begin to wonder if Argus knows something. And the last thing anybody on the <WSD>sell side</WSD> wants is to be in the dark. My phone starts ringing with sell siders telling me they could have done better on my last pring, saying they can be more competitive. 
Meaning of the word marked with <WSD> tags:  (finance) The sector of the finance industry that sells products such as stocks, bonds, and mutual funds to investors.