AUMdb
SM

Sabby Management, Llc

SEC-registered Investment Adviser CRD 162659 · SEC file 802-130032 ·
☆ Save with Pro ADV data as of Jul 08, 2026
Regulatory AUM
Discretionary
Clients
Avg AUM / client
Accounts
Employees

AUM over time

$206M $879M
Jun 27, 2013 Oct 27, 2023

Reported AUM from Form ADV filings, plotted by filing date · as of Jul 08, 2026

Private funds (2)

Reported in Form ADV Section 7.B.(1), filing of Mar 2024 · $128M combined gross assets

FundTypeDomicileGross assetsOwners
Sabby Volatility Warrant Master Fund, Ltd. master Private Equity Fund Cayman Islands $117M 73
Sabby Healthcare Master Fund, Ltd. master Hedge Fund Cayman Islands $10.1M 28

People (2)

NameRole / titleCredentialsWith firm sinceOwnership
Grundstein, Robert, Alan Principal, Member, Chief Operating Officer And General Counsel Of Sabby Management, Llc And Sabby Capital, Llc Jun 2011 (15y) 25% – 50%
Mintz, Hal, David Principal And Managing Member Of Sabby Management, Llc And Sabby Capital, Llc Jun 2011 (15y) 50% – 75%

Undisclosed: 0% – 25% of the firm is not attributable from the filed Schedule A bands.

Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.

Private funds (2, $128M gross assets)

FundTypeGross assetsMin. investmentOwners
Sabby Volatility Warrant Master Fund, Ltd. Private Equity Fund $117M $300K 73
Sabby Healthcare Master Fund, Ltd. Hedge Fund $10.1M $500K 28

From Form ADV Section 7.B private fund reporting.

Documents (1 archived)

FormPeriodSize
Form ADV (full filing) 07/08/2026 1.06 MB View · PDF · Source ↗

Archived copies of the firm's regulatory filings, versioned by content hash.

Disciplinary disclosures

Regulatory as of Oct 27, 2023

Allegations: IT APPEARED THAT SABBY MANAGEMENT, LLC ("SABBY") ENGAGED IN PROHIBITED TRADING WHENIT SOLD SHARES DURING A RESTRICTED PERIOD AND PURCHASED SHARES IN AN OFFERING BY COLLABRX, INC. (TICKER: CLRX), WHICH OFFERING PRICED ON FEBRUARY 25, 2015. Status: Final Sanction Detail: SABBY CEASE AND DESIST FROM COMMITTING OR CAUSING ANY VIOLATIONS AND ANY FUTURE VIOLATIONS OF RULE 105 OF REGULATION M OF THE EXCHANGE ACT. DISGORGEMENT OF $184,747.10, PREJUDGMENT INTEREST OF $2,331.51, AND A CIVIL MONEY PENALTY IN THE AMOUNT OF $91,669.95 (FOR A TOTAL OF $278,748.56) TO THE SECURITIES AND EXCHANGE COMMISSION. Summary: ON TWO OCCASIONS BETWEEN DECEMBER 2014 AND FEBRUARY 2015, SABBY BOUGHT (ON BEHALF OF PRIVATE FUND CLIENTS) OFFERING SHARES FROM AN UNDERWRITER OR BROKER OR DEALER PARTICIPATING IN A FOLLOW-ON PUBLIC OFFERING AFTER HAVING SOLD SHORT THE SAME SECURITY DURING THE RESTRICTED PERIOD SET FORTH IN RULE 105 OF REGULATION M UNDER THE SECURITIES EXCHANGE ACT OF 1934. THE SUBJECT TRANSACTIONS RESULTED IN PROFITS OF $184,747.10 FOR SABBY'S PRIVATE FUND CLIENTS. SABBY DID NOT USE THE SHARES PURCHASED TO COVER THE SHARES SOLD SHORT DURING THE RELEVANT RESTRICTED PERIODS, BUT THE SEC NEVERTHELESS ALLEGED AND FOUND THAT THE FOREGOING ACTIVITY VIOLATED RULE 105. THE SEC ORDERED SABBY (I) TO CEASE AND DESIST FROM ANY FUTURE VIOLATIONS OF RULE 105, (II) DISGORGE THE PROFITS (INCLUDING INTEREST) EARNED BY SABBY'S PRIVATE FUND CLIENTS AS A RESULT OF THE TRANSACTIONS, AND (III) TO PAY A CIVIL MONETARY PENALTY $91,669.95. WHEN ISSUING ITS ORDER, THE SEC ACKNOWLEDGED THE REMEDIAL ACTS PROMPTLY UNDERTAKEN BY SABBY AND THE COOPERATION AFFORDED BY SABBY TO THE SEC IN RESOLVING THIS MATTER.

Disclosure text reproduced verbatim from the firm's own Form ADV filings.

How they charge

Not reported.

Custody

Firm reports it does not have custody of client funds or securities (Item 9.A).

No custodian data reported or mined yet.

Source

All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Jul 08, 2026.

View current Form ADV (SEC/IAPD) ↗