# PIONEER ACQUISITION I CORP (PACHW)

> Institutional ownership reported to the SEC as of Q2 2026, from Form 13F filings. Source: https://holderbook.com/stocks/PACHW/

- Reporting holders: 48
- Reported value: $2.2M
- Held through calls: 2.3%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [BOOTHBAY FUND MANAGEMENT, LLC](https://holderbook.com/funds/1549230-boothbay-fund-management-llc/) | $230.2K | 22,500 | 0.0% | 4 |
| [Verition Fund Management LLC](https://holderbook.com/funds/1454027-verition-fund-management-llc/) | $151.7K | 703,436 | 0.0% | 4 |
| [Shaolin Capital Management LLC](https://holderbook.com/funds/1766806-shaolin-capital-management-llc/) | $126.8K | 587,871 | 0.0% | 4 |
| [Magnetar Financial LLC](https://holderbook.com/funds/1352851-magnetar-financial-llc/) | $107.8K | 500,000 | 0.0% | 3 |
| [AQR Arbitrage LLC](https://holderbook.com/funds/1167456-aqr-arbitrage-llc/) | $99.6K | 495,429 | 0.0% | 4 |
| [Wealthspring Capital LLC](https://holderbook.com/funds/1844495-wealthspring-capital-llc/) | $94.6K | 438,577 | 0.0% | 4 |
| [Westchester Capital Management, LLC](https://holderbook.com/funds/1512805-westchester-capital-management-llc/) | $91.7K | 424,999 | 0.0% | 2 |
| [Linden Advisors LP](https://holderbook.com/funds/1279396-linden-advisors-lp/) | $85.8K | 375,001 | 0.0% | 4 |
| [TORONTO DOMINION BANK](https://holderbook.com/funds/947263-toronto-dominion-bank/) | $85.4K | 395,591 | 0.0% | 3 |
| [MMCAP International Inc. SPC](https://holderbook.com/funds/1304857-mmcap-international-inc-spc/) | $80.9K | 375,000 | 0.0% | 3 |
| [HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND](https://holderbook.com/funds/1535845-healthcare-of-ontario-pension-plan-trust-fund/) | $70.1K | 325,000 | 0.0% | 4 |
| [CSS LLC/IL](https://holderbook.com/funds/1103646-css-llc-il/) | $65.8K | 305,019 | 0.0% | 4 |
| [Periscope Capital Inc.](https://holderbook.com/funds/1695320-periscope-capital-inc/) | $65.7K | 304,700 | 0.0% | 4 |
| [TENOR CAPITAL MANAGEMENT Co., L.P.](https://holderbook.com/funds/1346554-tenor-capital-management-co-l-p/) | $64.7K | 300,000 | 0.0% | 4 |
| [Clear Street Group Inc.](https://holderbook.com/funds/1881567-clear-street-group-inc/) | $63.4K | 294,098 | 0.0% | 4 |
| [Lepercq De Neuflize Asset Management LLC](https://holderbook.com/funds/1854423-lepercq-de-neuflize-asset-management-llc/) | $57.4K | 266,000 | 0.0% | 3 |
| [Radcliffe Capital Management, L.P.](https://holderbook.com/funds/1218275-radcliffe-capital-management-l-p/) | $57.2K | 250,000 | 0.0% | 4 |
| [Polar Asset Management Partners Inc.](https://holderbook.com/funds/1326389-polar-asset-management-partners-inc/) | $55.8K | 258,500 | 0.0% | 4 |
| [Alberta Investment Management Corp](https://holderbook.com/funds/1463559-alberta-investment-management-corp/) | $53.9K | 250,000 | 0.0% | 3 |
| [PICTON MAHONEY ASSET MANAGEMENT](https://holderbook.com/funds/1539041-picton-mahoney-asset-management/) | $53.9K | 250,000 | 0.0% | 4 |
| [Jain Global LLC](https://holderbook.com/funds/2024579-jain-global-llc/) | $53.9K | 250,000 | 0.0% | 3 |
| [MILLENNIUM MANAGEMENT LLC](https://holderbook.com/funds/1273087-millennium-management-llc/) | $51.2K | 0 | 0.0% | 4 |
| [OMERS ADMINISTRATION Corp](https://holderbook.com/funds/1053321-omers-administration-corp/) | $47.5K | 220,000 | 0.0% | 3 |
| [ARISTEIA CAPITAL, L.L.C.](https://holderbook.com/funds/1080171-aristeia-capital-l-l-c/) | $45.8K | 200,000 | 0.0% | 4 |
| [COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS](https://holderbook.com/funds/1083190-commonwealth-of-pennsylvania-public-school-empls-retrmt-sys/) | $43.2K | 200,000 | 0.0% | 4 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q2 2026 | 48 | $2.2M |
| Q1 2026 | 45 | $1.8M |
| Q4 2025 | 42 | $2.3M |
| Q3 2025 | 33 | $2.0M |