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Silverbox Corp V (SBXE): which funds own it

SPAC / vehículos(by SIC code, unreviewed)Data as of Jun 30, 2026 (Q2 2026) · updated on Nov 5, 2026

A 13F shows the portfolio at quarter-end and is filed up to 45 days later: these are not real-time positions and they may have changed.

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No concentrated manager holds it.

Who owns Silverbox Corp V?

Holders that filed a Schedule 13D or 13G with the SEC for owning more than 5% of the Class A shares: Adage Capital Management (13G filed Feb 12, 2026). As of Jun 30, 2026, the largest holders of Class A reported on Form 13F were Adage Capital Partners Gp, L.l.c (6.3% of Class A), Tenor Capital Management (6.0%) and Alberta Investment Management (4.9%).

Which institutions hold the most Silverbox Corp V shares?

Per Form 13F filings as of Jun 30, 2026, as a share of Class A:

  1. 1. Adage Capital Partners Gp, L.l.c: 6.3%
  2. 2. Tenor Capital Management: 6.0%
  3. 3. Alberta Investment Management: 4.9%
  4. 4. Hudson Bay Capital Management: 3.8%
  5. 5. Linden Advisors: 3.6%
  6. 6. Sculptor Capital: 3.6%
  7. 7. Magnetar Financial: 3.6%
  8. 8. Glazer Capital: 3.3%
  9. 9. D. E. Shaw: 3.1%
  10. 10. Aristeia Capital, L.l.c: 2.9%

How much of Silverbox Corp V do institutions own?

The 45 institutions that file 13F reported 83.4% of the Class A shares as of Jun 30, 2026.

Sources:13G by Adage Capital Management (Feb 12, 2026) ↗All of the company's proxy statements on EDGAR ↗

13F percentages divide the shares each institution reports by the Class A shares outstanding on the cover of the company's latest report before the quarter end (May 12, 2026). Entities of the same group file separately and are not added up. With more than one share class, a 13D or 13G counts shares convertible from another class as owned, so we do not show its percentage. We hold 13D and 13G filings made since Dec 23, 2024: a holder above 5% that has not filed since then does not appear here.

Concentrated managers
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All 13F: 45
Consensus
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No score: it needs 5 or more concentrated managers
Price at Jun 30, 2026 (per 13F)
$10.06
+1.4% in the quarter · reported value ÷ shares, not the quote · See current quote ↗

Quarter flow (concentrated managers)

Concentrated managers holding it

None in the latest quarter.

Largest holders of SBXE (all 13F filers)

The 10 13F filers with the most shares as of Jun 30, 2026, whatever their type (index firms usually come first). “Change”: shares added or cut versus the previous quarter, split-adjusted; “no data” = there is no comparable portfolio for the previous quarter (no filing, or a filing with its holdings under confidential treatment). “% of the company” only where shares outstanding are up to date. Entities of the same group file separately and some 13F filings include other managers: there may be double counting. With a free account: the top 25, the largest buyers and the largest sellers.

Fundamentals

Balance sheet only, for now. SBXE has not yet filed its first annual report (10-K) with the SEC, so there are no 12-month figures (revenue, margins, earnings and cash flow). We show the balance sheet from its latest filing; once the 12-month figures are available, this section fills in automatically.

Balance sheet as of Jun 30, 2026
Cash and equivalents
$383K
Shareholders' equity
$-21.8M

Balance sheet figures the company filed with the SEC (10-Q or 10-K), in dollars. Net debt = total debt − cash − investments; when negative, the company has more cash than debt (net cash). How each figure is calculated

Insiders (Form 4)

Officers and directors who bought (6 m)
no data
Amount (6 m)
no data
CEO/CFO bought (12 m)
No

Open-market purchases, excluding 10b5-1 plans. Officers and directors only; joint filers of the same purchase count as one. 10% owners with no role are shown separately. 0 = nobody bought; “no data” = we do not have its Form 4 filings.

Each of the company's Form 4 filings, on EDGAR ↗Latest trades, with date and filing →

Above 5% (13D/13G)

Disclosed stakes, with their amendments. A filing is not always a purchase: there are also reductions and changes of filing entity.

This list may be incomplete: we hold 13D and 13G filings made since Dec 23, 2024. A holder above 5% that has not filed anything since then is not shown here.

  • Adage Capital Management6.44%13Gfiling ↗Event: Dec 31, 2025 · filed: Feb 12, 2026

Above 5% over time (13D/13G)

Each holder with its filings in order. History since December 2024.

Flagged material events (8-K)

  • Jan 8, 2026Routinefiling ↗

    Change in directors or officers (Item 5.02)

  • Dec 4, 2025Routinefiling ↗

    Unregistered sale of equity securities (Item 3.02)

  • Dec 4, 2025Routinefiling ↗

    Change in directors or officers (Item 5.02)

Alert items the company itself flagged in its 8-K filings with the SEC, most serious first. It is the form's label, with no interpretation from us: Item 5.02 covers routine appointments as well as a chief executive's departure; open the filing. The quoted headline is the original press release's.

All material events (8-K)

Earnings, agreements, financing, management changes and announcements from the last year, with a filter by type and a link to each filing.

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