Latest Period
Q4 2025
Security Snapshot
GigCapital8 Corp. - Class A ordinary shares, par value $0.0001 per share (GIW) Institutional Ownership
CUSIP: G3864J100
13F Institutional Holders and Ownership History from Q4 2025 to Q1 2026
Institutions Reporting
44
Shares (Excl. Options)
19,517,226
Price
$9.89
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- Type / Class
- Equity / Class A ordinary shares, par value $0.0001 per share
- Symbol
- GIW on Nasdaq
- Shares outstanding
- 27,160,463
- Price per share
- $9.97
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 19,517,226
- Total reported value
- $193,037,704
- % of total 13F portfolios
- 0%
- Share change
- +18,959,412
- Value change
- +$187,520,748
- Number of holders
- 44
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- GIW - GigCapital8 Corp. - Class A ordinary shares, par value $0.0001 per share is tracked under CUSIP G3864J100.
- 44 institutions reported positions in Q4 2025.
- 4 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 44 to 7 between Q4 2025 and Q1 2026.
- Reported value moved from $193,037,704 to $18,028,113.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Source Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 44 institutions filings for Q4 2025.
Investment Quick Answers
What is CUSIP G3864J100?
CUSIP G3864J100 identifies GIW - GigCapital8 Corp. - Class A ordinary shares, par value $0.0001 per share in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.
Next ownership checks
Use the next link that matches the question you still need to answer about this security.
- Latest 13F filings when you want to inspect fresh institutional portfolio moves.
- Latest Schedule 13D/13G reports when you need large-owner changes outside the 13F cycle.
- All institutional ownership pages to compare this security with other holder-history pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP G3864J100:
Significant Owners of GigCapital8 Corp. - Class A ordinary shares, par value $0.0001 per share (GIW) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| GLAZER CAPITAL, LLC | 8.5% | $21,600,560 | 2,175,283 | Glazer Capital, LLC | 31 Dec 2025 | |||
| AQR CAPITAL MANAGEMENT LLC | 6.6% | $16,829,056 | 1,694,769 | AQR Capital Management, LLC | 31 Dec 2025 | |||
| Lynrock Lake LP | 5.4% | $14,563,983 | 1,466,665 | Lynrock Lake LP | 31 Dec 2025 | |||
| BERKLEY W R CORP | 5% | $12,804,437 | 1,289,470 | W. R. Berkley Corporation | 31 Dec 2025 |
As of 31 Dec 2025, 44 institutional investors reported holding 19,517,226 shares of GigCapital8 Corp. - Class A ordinary shares, par value $0.0001 per share (GIW). This represents 72% of the company’s total 27,160,463 outstanding shares.
Top 25 Institutional Shareholders
The largest institutional shareholders of GigCapital8 Corp. - Class A ordinary shares, par value $0.0001 per share (GIW) together control 66% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Glazer Capital, LLC | 8% | 2,175,283 | 0.57% | $21,514,000 | |
| AQR Arbitrage LLC | 6.2% | 1,694,769 | 0.35% | $16,761,265 | |
| TENOR CAPITAL MANAGEMENT Co., L.P. | 5.5% | 1,500,000 | 0.21% | $14,835,000 | |
| BERKLEY W R CORP | 4.7% | 1,289,470 | 0.71% | $12,752,858 | |
| Westchester Capital Management, LLC | 4% | 1,080,000 | 0.5% | $10,681,200 | |
| Yakira Capital Management, Inc. | 3.5% | 948,000 | 3.2% | $9,375,720 | |
| Polar Asset Management Partners Inc. | 3.1% | 850,000 | 0.17% | $8,406,500 | |
| ARISTEIA CAPITAL, L.L.C. | 3.1% | 850,000 | 0.24% | $8,406,500 | |
| WHITEBOX ADVISORS LLC | 2.9% | 800,000 | 0.14% | $7,912,000 | |
| D. E. Shaw & Co., Inc. | 2.8% | 759,000 | 0.01% | $7,506,510 | |
| Radcliffe Capital Management, L.P. | 2.4% | 650,000 | 0.35% | $6,431,750 | |
| MIZUHO SECURITIES USA LLC | 2% | 550,000 | 0.09% | $5,438,664 | |
| Logan Stone Capital, LLC | 1.9% | 512,612 | 1.3% | $5,072,296 | |
| BNP PARIBAS FINANCIAL MARKETS | 1.8% | 483,231 | 0% | 0% | $4,779,155 |
| PICTON MAHONEY ASSET MANAGEMENT | 1.6% | 425,000 | 0.05% | $4,205,375 | |
| Mint Tower Capital Management B.V. | 1.5% | 400,000 | 0.5% | $3,956,000 | |
| Alpine Global Management, LLC | 1.5% | 400,000 | 0.97% | $3,956,000 | |
| TWO SIGMA INVESTMENTS, LP | 1.5% | 398,750 | 0.01% | $3,943,638 | |
| WOLVERINE ASSET MANAGEMENT LLC | 1.4% | 386,643 | 0.05% | $3,823,899 | |
| Mercuria Capital Strategies, LLC | 1.4% | 375,000 | 2.1% | $3,708,750 | |
| Periscope Capital Inc. | 1.3% | 358,900 | 0.69% | $3,551,316 | |
| Clear Street Group Inc. | 1.3% | 346,892 | 0.02% | $3,430,762 | |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | 1.1% | 300,000 | 0.02% | $2,968,500 | |
| METEORA CAPITAL, LLC | 0.92% | 250,000 | 0.21% | $2,472,500 | |
| Linden Advisors LP | 0.92% | 250,000 | 0.02% | $2,473,750 |