Who owns Trailblazer Acquisition Corp. (BLZR)
Which tracked institutional funds hold BLZR, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See BLZR company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-15). 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 BLZR while 19 trimmed or exited it between 2025-Q4 and 2026-Q1 — 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
BLZR’s largest tracked holder by dollar value, METEORA CAPITAL, LLC, sizes it at 1.7% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 1.7pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in BLZR 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 2025-Q4 and 2026-Q1, across 78 tracked filers holding BLZR, 31 increased or opened the position and 25 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 BLZR between the 2025-Q4 and 2026-Q1 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 2
- O'Connor Alternative Investments LLC$4M
- BlueCrest Capital Management Ltd$2M
Full exits 3
- STEADFAST CAPITAL MANAGEMENT LP$7M
- OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC)$4M
- MIZUHO SECURITIES USA LLC$1M
Largest adds
- D. E. Shaw & Co., Inc.$9M
- Parallax Volatility Advisers, L.P.$6M
- GLAZER CAPITAL, LLC$4M
- Centiva Capital, LP$3M
- ARISTEIA CAPITAL, L.L.C.$3M
- WOLVERINE ASSET MANAGEMENT LLC$3M
Largest trims
- METEORA CAPITAL, LLC$90M
- Harraden Circle Investments, LLC$33M
- TENOR CAPITAL MANAGEMENT Co., L.P.$28M
- HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND$10M
- Context Capital Management, LLC$4M
- Ilex Capital Partners (UK) LLP$4M
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 |
|---|---|---|---|---|
| METEORA CAPITAL, LLC trimmed | 513,237 | $204M | 31.0% | 2026-Q1 |
| Harraden Circle Investments, LLC trimmed | 400,869 | $159M | 24.2% | 2026-Q1 |
| TENOR CAPITAL MANAGEMENT Co., L.P. trimmed | 333,333 | $132M | 20.2% | 2026-Q1 |
| Context Capital Management, LLC trimmed | 50,000 | $20M | 3.0% | 2026-Q1 |
| LMR Partners LLP | 1,000,000 | $10M | 1.5% | 2026-Q1 |
| MMCAP International Inc. SPC | 1,000,000 | $10M | 1.5% | 2026-Q1 |
| Polar Asset Management Partners Inc. | 1,000,000 | $10M | 1.5% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP | 869,999 | $9M | 1.3% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 849,641 | $9M | 1.3% | 2026-Q1 |
| Saba Capital Management, L.P. trimmed | 536,158 | $5M | 0.8% | 2026-Q1 |
| ARISTEIA CAPITAL, L.L.C. added | 500,000 | $5M | 0.8% | 2026-Q1 |
| Alberta Investment Management Corp | 500,000 | $5M | 0.8% | 2026-Q1 |
| Linden Advisors LP added | 500,000 | $5M | 0.8% | 2026-Q1 |
| HGC Investment Management Inc. trimmed | 400,000 | $4M | 0.6% | 2026-Q1 |
| Ghisallo Capital Management LLC | 400,000 | $4M | 0.6% | 2026-Q1 |
| O'Connor Alternative Investments LLC new | 400,000 | $4M | 0.6% | 2026-Q1 |
| Periscope Capital Inc. added | 351,900 | $4M | 0.5% | 2026-Q1 |
| Lineage Point Capital LP trimmed | 332,348 | $3M | 0.5% | 2026-Q1 |
| TORONTO DOMINION BANK added | 326,897 | $3M | 0.5% | 2026-Q1 |
| Centiva Capital, LP added | 324,999 | $3M | 0.5% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 299,498 | $3M | 0.5% | 2026-Q1 |
| WOLVERINE ASSET MANAGEMENT LLC added | 298,861 | $3M | 0.5% | 2026-Q1 |
| SONA ASSET MANAGEMENT (US) LLC added | 293,300 | $3M | 0.4% | 2026-Q1 |
| OMERS ADMINISTRATION Corp added | 272,899 | $3M | 0.4% | 2026-Q1 |
| BERKLEY W R CORP | 261,006 | $3M | 0.4% | 2026-Q1 |
| BlueCrest Capital Management Ltd new | 200,000 | $2M | 0.3% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 200,000 | $2M | 0.3% | 2026-Q1 |
| First Trust Capital Management L.P. | 199,998 | $2M | 0.3% | 2026-Q1 |
| Governors Lane LP added | 150,000 | $2M | 0.2% | 2026-Q1 |
| HEIGHTS CAPITAL MANAGEMENT, INC | 113,373 | $1M | 0.2% | 2026-Q1 |
| CSS LLC/IL added | 100,000 | $1M | 0.2% | 2026-Q1 |
| Davidson Kempner Capital Management LP | 100,000 | $1M | 0.2% | 2026-Q1 |
| Virtu Financial LLC added | 95,448 | $959K | 0.1% | 2026-Q1 |
| READYSTATE ASSET MANAGEMENT LP | 79,344 | $806K | 0.1% | 2026-Q1 |
| HRT FINANCIAL LP added | 50,000 | $508K | 0.1% | 2026-Q1 |
| TIG Advisors, LLC | 50,000 | $502K | 0.1% | 2026-Q1 |
| Schonfeld Strategic Advisors LLC trimmed | 50,000 | $502K | 0.1% | 2026-Q1 |
| Kryger Capital LLC new | 25,780 | $259K | 0.0% | 2026-Q1 |
| L1 Global Manager Pty Ltd | 25,000 | $251K | 0.0% | 2026-Q1 |
| Mint Tower Capital Management B.V. added | 25,000 | $251K | 0.0% | 2026-Q1 |
| ABC ARBITRAGE SA | 20,000 | $201K | 0.0% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 14,609 | $148K | 0.0% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC new | 14,428 | $145K | 0.0% | 2026-Q1 |
| GABELLI & Co INVESTMENT ADVISERS, INC. | 13,400 | $136K | 0.0% | 2026-Q1 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND trimmed | 333,333 | $132K | 0.0% | 2026-Q1 |
| Magnetar Financial LLC trimmed | 333,329 | $132K | 0.0% | 2026-Q1 |
| Shaolin Capital Management LLC trimmed | 325,698 | $129K | 0.0% | 2026-Q1 |
| GABELLI FUNDS LLC | 11,600 | $118K | 0.0% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 10,916 | $110K | 0.0% | 2026-Q1 |
| Calamos Advisors LLC | 10,000 | $102K | 0.0% | 2026-Q1 |
| Bulldog Investors, LLP | 10,000 | $102K | 0.0% | 2026-Q1 |
| STATE OF WISCONSIN INVESTMENT BOARD | 10,000 | $100K | 0.0% | 2026-Q1 |
| AQR Arbitrage LLC added | 246,194 | $89K | 0.0% | 2026-Q1 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. trimmed | 192,883 | $77K | 0.0% | 2026-Q1 |
| Radcliffe Capital Management, L.P. | 178,346 | $68K | 0.0% | 2026-Q1 |
| Clear Street Group Inc. added | 170,618 | $68K | 0.0% | 2026-Q1 |
| PICTON MAHONEY ASSET MANAGEMENT trimmed | 166,665 | $66K | 0.0% | 2026-Q1 |
| Wealthspring Capital LLC trimmed | 158,186 | $63K | 0.0% | 2026-Q1 |
| MOORE CAPITAL MANAGEMENT, LP | 133,334 | $53K | 0.0% | 2026-Q1 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC trimmed | 133,332 | $53K | 0.0% | 2026-Q1 |
| FNY Investment Advisers, LLC added | 4,800 | $48K | 0.0% | 2026-Q1 |
| Weiss Asset Management LP | 98,860 | $39K | 0.0% | 2026-Q1 |
| Ilex Capital Partners (UK) LLP | 95,956 | $38K | 0.0% | 2026-Q1 |
| Parallax Volatility Advisers, L.P. added | 94,628 | $34K | 0.0% | 2026-Q1 |
| Hudson Bay Capital Management LP trimmed | 84,172 | $33K | 0.0% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 66,666 | $26K | 0.0% | 2026-Q1 |
| Jain Global LLC | 66,666 | $26K | 0.0% | 2026-Q1 |
| GLAZER CAPITAL, LLC trimmed | 41,193 | $16K | 0.0% | 2026-Q1 |
| WHITEBOX ADVISORS LLC trimmed | 33,333 | $13K | 0.0% | 2026-Q1 |
| GRITSTONE ASSET MANAGEMENT LLC trimmed | 33,333 | $13K | 0.0% | 2026-Q1 |
| DLD Asset Management, LP | 22,221 | $9K | 0.0% | 2026-Q1 |
| Verition Fund Management LLC trimmed | 16,685 | $7K | 0.0% | 2026-Q1 |
| Kepos Capital LP new | 15,700 | $6K | 0.0% | 2026-Q1 |
| MORGAN STANLEY | 500 | $5K | 0.0% | 2026-Q1 |
| PenderFund Capital Management Ltd. trimmed | 3,333 | $1K | 0.0% | 2026-Q1 |
| Coston, McIsaac & Partners | 193 | $1K | 0.0% | 2026-Q1 |
| UBS Group AG | 400 | $159 | 0.0% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 1,000 | — | 0.0% | 2026-Q1 |
| STEADFAST CAPITAL MANAGEMENT LP | 700,000 | $7M | 1.1% | 2025-Q4 stale |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) new | 400,000 | $4M | 0.6% | 2025-Q4 stale |
| MIZUHO SECURITIES USA LLC added | 143,152 | $1M | 0.2% | 2025-Q4 stale |
| FIFTH LANE CAPITAL, LP new | 100,000 | $1M | 0.2% | 2025-Q3 stale |
| Quarry LP new | 75,565 | $773K | 0.1% | 2025-Q3 stale |
| Sculptor Capital LP new | 50,000 | $511K | 0.1% | 2025-Q3 stale |
| Tuttle Capital Management, LLC new | 45,000 | $460K | 0.1% | 2025-Q3 stale |
| KRYGER CAPITAL Ltd added | 25,437 | $261K | 0.0% | 2025-Q4 stale |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC new | 25,000 | $256K | 0.0% | 2025-Q3 stale |
| SYQUANT CAPITAL SAS | 25,000 | $256K | 0.0% | 2025-Q4 stale |
| Fort Baker Capital Management LP | 25,000 | $250K | 0.0% | 2025-Q4 stale |
| DELTEC ASSET MANAGEMENT LLC new | 10,000 | $102K | 0.0% | 2025-Q3 stale |
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.