Here's The Guardian's Andrew Clark on a peculiar encounter with Lloyd Blankfein at Obama's speech today. Gary Cohn was more forthcoming.

From The Guardian:

"Mr Blankfein, I'm Andrew Clark from The Guardian," I said. "What did you think of the speech?"

Without a flicker of acknowledgement, Blankfein, 55, stared ahead and continued walking.

Walking alongside him, I asked: "Mr Blankfein, has your company done anything wrong?"

The Goldman boss was having none of it, striding onward without a sound. I tried again: "Mr Blankfein, what do you think of the SEC's charges against your company?"

Still no response.

Rather awkwardly, given the lack of small talk, we both then got trapped in a crowded stairwell for a good three minutes while waiting for the Secret Service to allow guests to leave Cooper Union. Although we were less than three feet apart, the Goldman boss, who got a $9m bonus last year, maintained his adamant silence, except to warn a photographer taking his picture from above: "Don't hurt yourself."