Who owns Bleichroeder Acquisition Corp. II (BBCQ)
Which tracked institutional funds hold BBCQ, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See BBCQ company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-08-14). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
16 tracked funds added or opened BBCQ while 31 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
BBCQ’s largest tracked holder by dollar value, Fort Baker Capital Management LP, sizes it at 2.1% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 2.1pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in BBCQ divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 61 tracked filers holding BBCQ, 28 increased or opened the position and 38 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in BBCQ between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 8
- HIGHBRIDGE CAPITAL MANAGEMENT LLC$17M
- Governors Lane LP$14M
- ENVESTNET ASSET MANAGEMENT INC$7M
- Shay Capital LLC$4M
- STEINBERGANNA WEALTH MANAGEMENT$2M
- Cetera Investment Advisers$844K
Full exits 12
- HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND$10M
- TENOR CAPITAL MANAGEMENT Co., L.P.$8M
- METEORA CAPITAL, LLC$6M
- Lighthouse Investment Partners, LLC$5M
- TWO SIGMA INVESTMENTS, LP$5M
- GLAZER CAPITAL, LLC$5M
Largest adds
- Fort Baker Capital Management LP$9M
- Integrated Advisors Network LLC$6M
- SONA ASSET MANAGEMENT (US) LLC$6M
- Alyeska Investment Group, L.P.$2M
- DLD Asset Management, LP$536K
- LMR Partners LLP$480K
Largest trims
- CONTINENTAL GENERAL INSURANCE CO$13M
- ADAGE CAPITAL PARTNERS GP, L.L.C.$12M
- MILLENNIUM MANAGEMENT LLC$5M
- ARISTEIA CAPITAL, L.L.C.$4M
- AQR Arbitrage LLC$3M
- Shaolin Capital Management LLC$3M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| Fort Baker Capital Management LP added | 2,082,058 | $21M | 7.4% | 2026-Q2 |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC new | 1,632,494 | $17M | 5.8% | 2026-Q2 |
| LMR Partners LLP | 1,600,000 | $17M | 5.7% | 2026-Q2 |
| Linden Advisors LP | 1,550,000 | $16M | 5.5% | 2026-Q2 |
| Governors Lane LP new | 1,400,000 | $14M | 5.0% | 2026-Q2 |
| Alyeska Investment Group, L.P. added | 1,179,280 | $12M | 4.2% | 2026-Q2 |
| Magnetar Financial LLC trimmed | 1,175,000 | $12M | 4.2% | 2026-Q2 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. trimmed | 1,068,599 | $11M | 3.8% | 2026-Q2 |
| AQR Arbitrage LLC trimmed | 941,250 | $10M | 3.3% | 2026-Q2 |
| Alberta Investment Management Corp | 937,575 | $10M | 3.3% | 2026-Q2 |
| SONA ASSET MANAGEMENT (US) LLC added | 900,000 | $9M | 3.2% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 805,450 | $8M | 2.9% | 2026-Q2 |
| ARISTEIA CAPITAL, L.L.C. trimmed | 744,000 | $8M | 2.6% | 2026-Q2 |
| CONTINENTAL GENERAL INSURANCE CO trimmed | 725,139 | $7M | 2.6% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC new | 713,123 | $7M | 2.5% | 2026-Q2 |
| Integrated Advisors Network LLC added | 692,520 | $7M | 2.5% | 2026-Q2 |
| D. E. Shaw & Co., Inc. | 526,364 | $5M | 1.9% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 498,375 | $5M | 1.8% | 2026-Q2 |
| MOORE CAPITAL MANAGEMENT, LP | 450,000 | $5M | 1.6% | 2026-Q2 |
| Verition Fund Management LLC trimmed | 415,000 | $4M | 1.5% | 2026-Q2 |
| Shay Capital LLC new | 411,993 | $4M | 1.5% | 2026-Q2 |
| CANTOR FITZGERALD, L. P. trimmed | 411,329 | $4M | 1.5% | 2026-Q2 |
| DLD Asset Management, LP added | 278,388 | $3M | 1.0% | 2026-Q2 |
| Polar Asset Management Partners Inc. | 250,000 | $3M | 0.9% | 2026-Q2 |
| Radcliffe Capital Management, L.P. trimmed | 203,779 | $2M | 0.7% | 2026-Q2 |
| STEINBERGANNA WEALTH MANAGEMENT new | 163,198 | $2M | 0.6% | 2026-Q2 |
| Periscope Capital Inc. trimmed | 155,000 | $2M | 0.5% | 2026-Q2 |
| WHITEBOX ADVISORS LLC | 150,000 | $2M | 0.5% | 2026-Q2 |
| Hudson Bay Capital Management LP trimmed | 146,046 | $2M | 0.5% | 2026-Q2 |
| Shaolin Capital Management LLC trimmed | 143,400 | $1M | 0.5% | 2026-Q2 |
| Context Capital Management, LLC | 100,000 | $1M | 0.4% | 2026-Q2 |
| PICTON MAHONEY ASSET MANAGEMENT trimmed | 96,416 | $995K | 0.3% | 2026-Q2 |
| Saba Capital Management, L.P. trimmed | 93,697 | $967K | 0.3% | 2026-Q2 |
| Cetera Investment Advisers new | 81,743 | $844K | 0.3% | 2026-Q2 |
| Bulldog Investors, LLP trimmed | 75,000 | $774K | 0.3% | 2026-Q2 |
| Clear Street Group Inc. trimmed | 69,301 | $715K | 0.2% | 2026-Q2 |
| CSS LLC/IL trimmed | 56,899 | $587K | 0.2% | 2026-Q2 |
| PRELUDE CAPITAL MANAGEMENT, LLC new | 56,377 | $582K | 0.2% | 2026-Q2 |
| SEI INVESTMENTS CO new | 51,166 | $528K | 0.2% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 49,871 | $514K | 0.2% | 2026-Q2 |
| BERKLEY W R CORP trimmed | 49,282 | $509K | 0.2% | 2026-Q2 |
| Advyzon Investment Management, LLC new | 41,923 | $433K | 0.1% | 2026-Q2 |
| MML INVESTORS SERVICES, LLC new | 40,549 | $418K | 0.1% | 2026-Q2 |
| MIZUHO SECURITIES USA LLC new | 40,000 | $410K | 0.1% | 2026-Q2 |
| Intellectus Partners, LLC new | 35,000 | $361K | 0.1% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC trimmed | 34,427 | $355K | 0.1% | 2026-Q2 |
| CITADEL ADVISORS LLC new | 29,787 | $307K | 0.1% | 2026-Q2 |
| Qube Research & Technologies Ltd new | 25,008 | $258K | 0.1% | 2026-Q2 |
| Ausdal Financial Partners, Inc. new | 24,075 | $248K | 0.1% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC | 22,441 | $232K | 0.1% | 2026-Q2 |
| Brevan Howard Capital Management LP | 20,000 | $206K | 0.1% | 2026-Q2 |
| WOLVERINE ASSET MANAGEMENT LLC trimmed | 19,035 | $196K | 0.1% | 2026-Q2 |
| Arkadios Wealth Advisors new | 16,939 | $175K | 0.1% | 2026-Q2 |
| Vantus Wealth LLC new | 15,370 | $159K | 0.1% | 2026-Q2 |
| Rangeley Capital, LLC new | 15,000 | $155K | 0.1% | 2026-Q2 |
| JANE STREET GROUP, LLC new | 12,526 | $129K | 0.0% | 2026-Q2 |
| Lineage Point Capital LP trimmed | 10,659 | $110K | 0.0% | 2026-Q2 |
| Signature Equity Partners, LLC new | 10,373 | $107K | 0.0% | 2026-Q2 |
| TORNO CAPITAL, LLC new | 300 | $3K | 0.0% | 2026-Q2 |
| MORGAN STANLEY added | 38 | $392 | 0.0% | 2026-Q2 |
| Caitong International Asset Management Co., Ltd new | 7 | $72 | 0.0% | 2026-Q2 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND trimmed | 1,000,000 | $10M | 3.4% | 2026-Q1 stale (1 quarter behind) |
| TENOR CAPITAL MANAGEMENT Co., L.P. new | 750,000 | $8M | 2.6% | 2026-Q1 stale (1 quarter behind) |
| METEORA CAPITAL, LLC new | 601,155 | $6M | 2.1% | 2026-Q1 stale (1 quarter behind) |
| Lighthouse Investment Partners, LLC new | 500,000 | $5M | 1.7% | 2026-Q1 stale (1 quarter behind) |
| TWO SIGMA INVESTMENTS, LP new | 453,124 | $5M | 1.6% | 2026-Q1 stale (1 quarter behind) |
| GLAZER CAPITAL, LLC added | 450,000 | $5M | 1.6% | 2026-Q1 stale (1 quarter behind) |
| HEIGHTS CAPITAL MANAGEMENT, INC new | 279,547 | $3M | 1.0% | 2026-Q1 stale (1 quarter behind) |
| TORONTO DOMINION BANK new | 211,928 | $2M | 0.7% | 2026-Q1 stale (1 quarter behind) |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS new | 198,220 | $2M | 0.7% | 2026-Q1 stale (1 quarter behind) |
| Mint Tower Capital Management B.V. new | 150,000 | $2M | 0.5% | 2026-Q1 stale (1 quarter behind) |
| Virtu Financial LLC new | 62,841 | $630K | 0.2% | 2026-Q1 stale (1 quarter behind) |
| HRT FINANCIAL LP new | 56,361 | $564K | 0.2% | 2026-Q1 stale (1 quarter behind) |
| Kepos Capital LP new | 34,600 | $347K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| BOOTHBAY FUND MANAGEMENT, LLC new | 15,653 | $157K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| FNY Investment Advisers, LLC new | 700 | $7K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 13,571 | $160K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| UBS Group AG trimmed | 4,446 | $47K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| CLEAR STREET LLC trimmed | 86 | $913 | 0.0% | 2025-Q2 stale (4 quarters behind) |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | — | 0.0% | 2025-Q2 stale (4 quarters behind) |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.