Sweeping bids/offers

From a trader's perspective, how do you protect yourself against a big firm sweeping all bids on a thinly traded stock? What's the strategy on the big firm's side? Do they sell against everyone then scoop it right back up or ...?
 
Quote from matador04:

From a trader's perspective, how do you protect yourself against a big firm sweeping all bids on a thinly traded stock? What's the strategy on the big firm's side? Do they sell against everyone then scoop it right back up or ...?

Don't leave out too many open orders.
 
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