Latest Period
Q4 2025
- Info
- Insider Trading
- Financials
- Holders: GIW, GIWWU
Security Snapshot
GigCapital8 Corp. - Class A Common Stock (GIWWU) Institutional Ownership
CUSIP: G3864J126
13F Institutional Holders and Ownership History from Q4 2025 to Q1 2026
Institutions Reporting
18
Shares (Excl. Options)
4,407,587
Price
$10.18
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- Type / Class
- Equity / Class A Common Stock
- Symbol
- GIWWU on Nasdaq
- Shares outstanding
- 22,388,060
- Price per share
- $10.20
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 4,407,587
- Total reported value
- $44,931,230
- % of total 13F portfolios
- 0%
- Share change
- +4,397,170
- Value change
- +$44,825,185
- Number of holders
- 18
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- GIWWU - GigCapital8 Corp. - Class A Common Stock is tracked under CUSIP G3864J126.
- 18 institutions reported positions in Q4 2025.
- 1 significant owner is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 18 to 1 between Q4 2025 and Q1 2026.
- Reported value moved from $44,931,230 to $51.
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 18 institutions filings for Q4 2025.
Investment Quick Answers
What is CUSIP G3864J126?
CUSIP G3864J126 identifies GIWWU - GigCapital8 Corp. - Class A Common Stock 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 G3864J126:
Significant Owners of GigCapital8 Corp. - Class A Common Stock (GIWWU) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| TENOR CAPITAL MANAGEMENT Co., L.P. | 6.7% | 1,500,000 | Tenor Capital Management Company, L.P. | 06 Oct 2025 |
As of 31 Dec 2025, 18 institutional investors reported holding 4,407,587 shares of GigCapital8 Corp. - Class A Common Stock (GIWWU). This represents 20% of the company’s total 22,388,060 outstanding shares.
Top 18 Institutional Shareholders
The largest institutional shareholders of GigCapital8 Corp. - Class A Common Stock (GIWWU) together control 20% 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 |
|---|---|---|---|---|---|
| Magnetar Financial LLC | 3.1% | 695,261 | 0.07% | $7,119,473 | |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | 2.7% | 599,512 | 0.29% | $6,103,032 | |
| TORONTO DOMINION BANK | 2.1% | 475,000 | 0.01% | $4,835,500 | |
| MILLENNIUM MANAGEMENT LLC | 2.1% | 464,234 | 0% | $4,725,902 | |
| GABELLI & Co INVESTMENT ADVISERS, INC. | 1.3% | 299,871 | 0.46% | $3,052,687 | |
| Crossingbridge Advisors, LLC | 1.2% | 274,996 | 0.83% | $2,800,959 | |
| GABELLI FUNDS LLC | 1.1% | 255,300 | 0.02% | $2,598,954 | |
| HGC Investment Management Inc. | 1.1% | 250,000 | 0.54% | $2,545,000 | |
| Schonfeld Strategic Advisors LLC | 1.1% | 244,559 | 0.01% | $2,504,284 | |
| Verition Fund Management LLC | 0.89% | 200,000 | 0.01% | $2,036,000 | |
| HEIGHTS CAPITAL MANAGEMENT, INC | 0.63% | 141,683 | 0.55% | $1,442,333 | |
| Mercuria Capital Strategies, LLC | 0.56% | 125,000 | 0.72% | $1,272,500 | |
| Wealthspring Capital LLC | 0.45% | 100,000 | 0.24% | $1,018,000 | |
| Clear Street Group Inc. | 0.42% | 93,670 | 0% | $953,561 | |
| Quarry LP | 0.33% | 75,000 | 0.19% | $768,000 | |
| HRT FINANCIAL LP | 0.24% | 53,084 | 0% | $540,000 | |
| Lynrock Lake LP | 0.22% | 50,000 | 0.03% | $509,000 | |
| Stoic Point Capital Management LLC | 0.05% | 10,417 | 0% | 0.09% | $106,045 |