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Disclosery

SBXDF SILVERBOX CORP IV

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SHS CL A (common), issuer CIK 2015947

46 managers (46 13F filers) reported a position in SBXDF shares at 2025-12-31, 19,793,582 shares in all. 6 filers opened a position and 12 filers sold out during the quarter.

Managers
46
13F filers
46
New
6
Added
9
Reduced
8
Sold out
12
Shares held by filers
19,793,582

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

Each filer's latest stake. The shares are the aggregate the reporting persons state, which can include entities that file no 13F.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Linden Advisors LPin group Linden Advisors LP2,000,000$21.2M0.13%013F-HRTimelineGroup
MIZUHO SECURITIES USA LLCin group MIZUHO FINANCIAL GROUP INC1,645,673$17.3M0.29%+1,352,41413F-HRTimelineGroup
Polar Asset Management Partners Inc.1,380,000$14.6M0.29%-100,00013F-HRTimeline
AQR Arbitrage LLCin group AQR CAPITAL MANAGEMENT LLC1,347,002$14.3M0.3%013F-HRTimelineGroup
BERKLEY W R CORP1,211,674$12.8M0.72%+1,040,48313F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.989,397$10.5M0.01%013F-HRTimelineGroup
MMCAP International Inc. SPCin group MMCAP980,000$10.4M1.04%013F-HRTimelineGroup
WOLVERINE ASSET MANAGEMENT LLCin group WOLVERINE ASSET MANAGEMENT LLC972,109$10.3M0.15%+299,49713F-HRTimelineGroup
PICTON MAHONEY ASSET MANAGEMENT824,899$8.73M0.1%013F-HRTimeline
Governors Lane LP753,177$7.97M0.74%013F-HRTimeline
Crossingbridge Advisors, LLC637,732$6.74M1.9%new13F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC606,254$6.41M<0.01%013F-HR/ATimelineGroup
RiverPark Advisors, LLCin group RiverPark Advisors, LLC587,732$6.22M1.79%new13F-HRTimelineGroup
Magnetar Financial LLCin group Magnetar Financial LLC520,823$5.51M0.05%013F-HRTimelineGroup
Calamos Advisors LLCin group Calamos Advisors LLC500,000$5.29M0.02%013F-HRTimelineGroup
LMR Partners LLPin group LMR Partners LLP500,000$5.29M0.05%013F-HRTimelineGroup
First Trust Capital Management L.P.in group FIRST TRUST ADVISORS LP445,168$4.71M0.29%013F-HRTimelineGroup
ARISTEIA CAPITAL, L.L.C.336,123$3.56M0.1%new13F-HRTimeline
Westchester Capital Management, LLCin group Westchester Capital Managemen…325,485$3.44M0.16%013F-HRTimelineGroup
RIVERNORTH CAPITAL MANAGEMENT, LLC299,997$3.17M0.15%013F-HRTimeline
Context Capital Management, LLC262,951$2.78M0.07%013F-HRTimeline
MOORE CAPITAL MANAGEMENT, LP250,000$2.65M0.05%013F-HRTimeline
Radcliffe Capital Management, L.P.227,454$2.41M0.13%+50,04213F-HRTimeline
Shaolin Capital Management LLC225,000$2.38M0.09%+28,07513F-HRTimeline
Wealthspring Capital LLCin group Wealthspring Capital LLC208,849$2.21M0.52%-2,34613F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC200,000$2.12M<0.01%013F-HRTimelineGroup
Periscope Capital Inc.186,353$1.97M0.38%-13,64713F-HRTimeline
TORONTO DOMINION BANKin group TORONTO DOMINION BANK158,057$1.67M<0.01%-779,94313F-HRTimelineGroup
MANGROVE PARTNERS IM, LLC156,622$1.66M0.14%013F-HRTimeline
Quarry LP141,597$1.5M0.25%new13F-HRTimeline
Creek Drive Management Group LLC140,000$1.48M1.09%13F-HR/ATimeline
HRT FINANCIAL LP139,195$1.47M<0.01%+22,19613F-HRTimeline
DLD Asset Management, LP121,473$1.29M0.13%+1,47313F-HRTimeline
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…99,998$1.06M<0.01%013F-HRTimeline
Massar Capital Management, LP94,600$1M0.2%013F-HRTimeline
Meteora Capital, LLC70,000$741K0.06%-80,00013F-HRTimeline
Lineage Point Capital LP50,042$529K0.2%13F-HR/ATimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO50,000$529K<0.01%013F-HRTimelineGroup
OCONNOR, A Distinct Business Unit of UB…47,830$506K0.01%013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Clear Street Group Inc.in group Clear Street Group Inc.29,915$317K<0.01%+19,91513F-HRTimelineGroup
GLAZER CAPITAL, LLCin group GLAZER CAPITAL, LLC20,780$220K0.01%+78013F-HRTimelineGroup
Schonfeld Strategic Advisors LLC19,355$205K<0.01%new13F-HRTimeline
TWO SIGMA SECURITIES, LLC17,330$183K0.03%new13F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC10,631$112K<0.01%-36,08113F-HRTimelineGroup
UBS Group AGin group UBS Group AG2,218$23.5K<0.01%-11,23413F-HRTimelineGroup
FNY Investment Advisers, LLC87$00%-1313F-HRTimelineValue filed as zero, left out of ratios.

Events

  • CALAMOS INVESTMENT TRUST/IL reported 500,000 SBXDF shares, 7.8% of the class, as of 2026-09-30, in a 13G filed 2026-10-09. 0001104659-26-114884

    Accepted , ingested