Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in HYAC held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | AMERICAN CENTURY COMPANIES INC | 2.7M | $31.2M | β | 9.281% | 0.02% |
| 2 | BERKLEY W R CORP | 2.3M | $26.7M | +18.2% | 7.958% | 1.44% |
| 3 | Harraden Circle Investments, LLC | 2.0M | $23.4M | +6626.1% | 6.974% | 4.70% |
| 4 | Westchester Capital Management, LLC | 1.9M | $22.2M | 0.0% | 6.646% | 1.06% |
| 5 | WASATCH ADVISORS INC | 1.7M | $19.3M | β | 5.739% | 0.13% |
| 6 | LINDEN ADVISORS LP | 900K | $10.4M | 0.0% | 3.085% | 0.06% |
| 7 | MMCAP International Inc. SPC | 900K | $10.4M | 0.0% | 3.085% | 0.90% |
| 8 | Polar Asset Management Partners Inc. | 1.0M | $10.0M | +129.9% | 3.428% | 0.22% |
| 9 | CNH PARTNERS LLC | 681K | $7.9M | -0.7% | 2.336% | 0.13% |
| 10 | D. E. Shaw & Co., Inc. | 604K | $7.0M | 0.0% | 2.069% | 0.01% |
| 11 | Alberta Investment Management Corp | 400K | $4.6M | 0.0% | 1.371% | 0.03% |
| 12 | HSBC HOLDINGS PLC | 331K | $3.9M | β | 1.134% | 0.00% |
| 13 | MOORE CAPITAL MANAGEMENT, LP | 300K | $3.5M | 0.0% | 1.028% | 0.08% |
| 14 | Fort Baker Capital Management LP | 250K | $2.9M | -89.3% | 0.857% | 0.28% |
| 15 | Vivaldi Asset Management, LLC | 244K | $2.8M | -83.3% | 0.836% | 0.15% |
| 16 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 207K | $2.4M | +43.9% | 0.711% | 0.00% |
| 17 | DLD Asset Management, LP | 204K | $2.3M | 0.0% | 0.699% | 0.23% |
| 18 | Shaolin Capital Management LLC | 200K | $2.3M | -20.0% | 0.685% | 0.09% |
| 19 | Brevan Howard Capital Management LP | 147K | $1.7M | β | 0.503% | 0.02% |
| 20 | MCGUIRE CAPITAL ADVISORS INC | 135K | $1.6M | β | 0.463% | 1.00% |
| 21 | Calamos Advisors LLC | 100K | $1.2M | 0.0% | 0.343% | 0.00% |
| 22 | Limestone Investment Advisors LP | 392K | $1.2M | +1920.9% | 1.344% | 0.10% |
| 23 | CastleKnight Management LP | 74K | $851K | β | 0.253% | 0.07% |
| 24 | Hudson Bay Capital Management LP | 74K | $848K | -1.3% | 0.254% | 0.01% |
| 25 | KORNITZER CAPITAL MANAGEMENT INC /KS | 60K | $692K | β | 0.206% | 0.01% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in HYAC β a direct measure of their conviction.
Filings activity in HYAC during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new HYAC position in Q1 2026
Institutions that fully closed their HYAC position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 33 | 30% | 64.79% | 10.07 pp | $203M | 13% |
| Q4 2025 | 47 | +0.0% | 74.86% | +0.36 pp | $235M | +0.5% |
| Q3 2025 | 47 | 22% | 74.50% | +3.35 pp | $234M | +4.7% |
| Q2 2025 | 60 | +3.4% | 71.15% | 0.19 pp | $223M | 0.3% |
| Q1 2025 | 58 | +0.0% | 71.34% | +1.83 pp | $224M | +2.6% |
| Q4 2024 | 58 | +12% | 69.51% | +3.78 pp | $218M | +5.8% |
| Q3 2024 | 52 | 15% | 65.73% | +3.59 pp | $206M | +5.8% |
| Q2 2024 | 61 | β | 62.14% | β | $195M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying HYAC stock.
Based on Q1 2026 13F filings, institutional ownership of Haymaker Acquisition Corp. III stands at 64.8%, held across 33 reporting institutions.
AMERICAN CENTURY COMPANIES INC is the largest reported institutional holder of HYAC, with approximately 2,707,667 shares worth $0.03B as of Q1 2026.
Yes β 1 widely-followed marquee investor appear among the top 25 institutional holders of HYAC, including SUSQUEHANNA INTERNATIONAL GROUP, LLP.
Our composite Smart Money Score for HYAC is 28 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
8 institutions opened new positions in HYAC during Q1 2026, while 22 fully exited. 18 added to existing positions and 6 trimmed.
HYAC institutional ownership fell by 10.07 percentage points quarter-over-quarter, with a net change of -14 holders.
The top 10 institutions account for 82.9% of all reported 13F value in HYAC, and the top 25 account for 99.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Haymaker Acquisition Corp. III (HYAC) Institutional Ownership