Thursday, October 22, 2026The Morning EditionOpen AtlasSign inJoin free
FinancialADVSR

Est. 2026The front page of wealth managementNew York

The Morning EditionFree · 6:30 AM ETSubscribe
RB An Amazon intern in 2020, Nevis CEO Mark Swan is the unlikely dream weaver for Focus Financial and other big RIA rollups with 'nightmare' integration issues -- with help from Schwab, Fidelity, OpenAI and AnthropicIN SpaceX’s AI segment now drives more than half its revenue. Here’s what advisors should watch nextFP Why AI might recommend your competitor instead of youFP Why clients are choosing phased retirement — and what advisors should know4K SPARK Forum Offering Scholarships for Retirement Plan AdvisorsFP What Schwab's new ETF platform fees mean for clients, advisorsWM RIA Platform Leaders Ask ‘What’s the Advantage in Having Your Own Form ADV?’IN Fake e-vite phishing scams put high-net-worth clients at riskRB Rick Wurster says Schwab is tackling its forced rationing of long/short SMAs with proprietary 'offering' to stretch balance sheet, but it may be more about a fee upside, a long/short manager saysIN Fintech bytes: 55ip, Vise, Syntax push tax-smart tools for RIAs

Chief Financial Officer · One William Street Capital Management, LP.

Crystal K. Frumberg

CRD 8190613 · Named on Form ADV at 2 SEC-registered advisers

At a glance

One William Street Capital Management, LP., an SEC-registered private fund adviser based in New York, NY with $11.3 billion in regulatory assets, lists Crystal K. Frumberg on its Form ADV as Chief Financial Officer, a control person. The SEC filings also name Crystal at 1 other registered adviser.

Firms and roles

AtlasMembers

Crystal’s stakes and control

What Form ADV says they own at each firm, whether they control it, and how each firm is growing. Atlas members see all of it.

Ownership stake at each firm
2 firmsLocked
Control-person status
2 firmsLocked
When each role began
Locked
Each firm’s assets and growth
Locked
Search and export owners by title, state and firm size
Locked
Open Atlas free

Free while Atlas launches: create a free account and confirm your email. Every figure comes from SEC filings.

Colleagues named on the same filings (7)

  • David N. SherrLimited Partner/chief Executive Officer/chief Investment Officer, One William Street Capital Management, LP.
  • Kurt A. LocherLimited Partner/co-President, One William Street Capital Management, LP.
  • Frank C. PreziosoLimited Partner/deputy Chief Investment Officer, One William Street Capital Management, LP.
  • Matthew J. ZifferLimited Partner/executive Officer, One William Street Capital Management, LP.
  • Christopher R. EpesChief Legal Officer, One William Street Capital Management, LP.

2 more people named with Crystal on the same filings, with titles and firms. Free in Atlas with a free account.

See all 7 free

Something wrong? Ask for a correction. Source: Schedules A and B of each firm’s latest Form ADV, filed with the SEC. For Crystal’s registrations, exams and any disclosures, see the SEC’s adviser search or FINRA BrokerCheck.