Tagged: Nasdaq Security breach

Pay Attention to Your Trading

We’re leaving most of this week’s email to our friend Joe Saluzzi at Themis Trading. Joe is a groundbreaking and thoughtful critic of contemporary trading, and among the smartest people we know. Last October, Steve Kroft interviewed Joe on 60 Minutes about our machine-driven markets.

Read what Joe says below about the recent Nasdaq website security issue. Even if you trade elsewhere. You all trade everywhere today. Do you know how much of your volume trades on your listing exchange?

How about your volume at other venues? The brokers executing these trades? The smallest investor trading just 100 shares can know whether a trade is executed on an agency or principal basis. But public companies don’t even know the brokers behind the majority of trades.

How about your daily short volume? Exchanges are currently implementing circuit breakers on short trades as required under SEC amendments to Reg SHO. But public companies don’t even know what part of their daily volume is short. (more…)