Wall Street Still Waiting on SAC Redemption Numbers

Douglas Healey | Bloomberg | Getty Images

A day after a crucial SAC Capital deadline for investor withdrawals, traders and money managers are still waiting for details on exactly how much capital the $15 billion hedge fund has lost.

Heading in to the June 3 cutoff date for second-quarter redemptions, SAC insiders were warning that the embattled firm would likely see "significant" outflows of its more than $4 billion in external assets. Private-equity investor Blackstone Group and several smaller investors had already telegraphed plans to withdraw at least some of their capital.

Ongoing legal problems at SAC, whose current and former employees have been under prosecutorial scrutiny for alleged insider trading, appeared to have spooked many others.

But as Tuesday afternoon rolled around, few facts had emerged on how many dollars would leave SAC as a result of second-quarter redemptions (which are essentially demands for money that result in a gradual return of capital between now and year-end).

One break in the radio silence: a revelation at midday that, according to someone familiar with the matter, Morgan Stanley's wealth management division is leaving some of its client money with SAC. The bank's global wealth management unit has a relatively small investment in SAC, this person added, and the clients who are invested in the hedge fund through the Morgan Stanley platform understand the risks they are taking. It isn't clear whether the bank's investment management division, which is a separate arm, is redeeming money, and spokesmen for both units did not respond to requests for comment.

Morgan Stanley's decision to retain money in SAC will probably raise questions, as the bank is a key prime broker, or provider of capital and services, to SAC.

(Read More: SAC Capital Investors Could Pull Billions in Quarter)

No matter what, SAC can now legitimately say it still manages external capital. In addition to the Morgan Stanley clients, the money managers SkyBridge Capital and Chapwood Investments kept their SAC assets intact, and SAC's reinsurance arm, SAC Re, reportedly has about $500 million invested in its sister funds that are also considered outside capital.

—By CNBC's Kate Kelly. Follow her on Twitter: @KateKellyCNBC