1. Bernard L . Madoff Investment Securities leased the 17th through 19th floors. 2. Chia Yew Boon, research director at Santander Investment Securities , told Dow Jones Newswires. 3. They formed a firm, Pemberton and McAdoo, to sell investment securities . 4. He later worked as an investment securities broker, and spent time restoring antiques. 5. "People find fixed-income more interesting, " said a trader at Santander Investment Securities . 6. The Minneapolis-based regional bank reduced its portfolio of investment securities and residential mortgage loans. 7. The Company s profit mainly comes from earning interest on loans and investment securities . 8. She was director of Bernard L . Madoff Investment Securities . 9. But profits were partially offset by higher expenses and lower gains from investment securities . 10. Nicholas Brooks, an economist at Santander Investment Securities Singapore told DowJones Newswires on Thursday.