Matt Seiler is thumbing through a copy of Michael Lewis’ “Flash Boys.
”It’s not
just any copy — it’s a personally annotated version of the bestseller edited by Seiler himself, and it has become required reading for his team at Interpublic’s Mediabrands. Seiler becomes animated, almost agitated, as he points to underlined passages that make direct connections between Wall Street’s high-speed trading systems and Madison Avenue’s programmatic audience-buying marketplace. He pauses with his forefinger on one, pokes at it, and says: “Dark pools. That’s what our private exchanges really are.”
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