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GigCapital9 Corp.

GIX
Exchange
Nasdaq
Industry
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SEC CIK
0002098712

No open-market purchases or sales by GigCapital9 Corp. insiders were filed in the last 90 days; 49 institutions reported holding it in 13F filings for Q2 2026, worth $218.3M in total; no superinvestor holds it.

Other share classesGIXXRGIXXU

Holders of 5% or more of GIX

Holders whose latest Schedule 13D or 13G filing reports 5% or more of GigCapital9 Corp., largest stake first. The change is against the holder's previous filing.

Holders of 5% or more of GIX
HolderLatest formStakeChangeFirst filedLatest filingFiling
Glazer Capital, LLC13G8.48%2.18M sharesNewMay 14, 20261 filingMay 14, 2026SEC
Yakira Capital Management, Inc.13G8.48%2.18M sharesNewApr 8, 20261 filingApr 8, 2026SEC
AQR Capital Management LLC13G/A5.74%1.47M shares−2.74 ppfrom 8.48%May 13, 20262 filingsAug 13, 2026SEC
Aristeia Capital LLC13G5.45%1.40M sharesNewMay 14, 20261 filingMay 14, 2026SEC
Highbridge Capital Management LLC13G5.30%1.36M sharesNewAug 14, 20261 filingAug 14, 2026SEC

Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.

13D and 13G filings

10 Schedule 13D and 13G filings on GigCapital9 Corp., newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on GIX
Filed (ET)FilerFormStakeChangeEvent dateFiling
Nov 10, 20267:32 PM ETGoldman Sachs Group Incand 1 other13G/A4.70%1.22M shares−1.00 ppfrom 5.70%Below 5%Sep 30, 2026SEC
Aug 14, 202612:38 PM ETHighbridge Capital Management LLC13G5.30%1.36M sharesNewJun 30, 2026SEC
Aug 13, 20269:36 AM ETAQR Capital Management LLCand 2 others13G/A5.74%1.47M shares−2.74 ppfrom 8.48%Jun 30, 2026SEC
Aug 11, 202610:35 AM ETLighthouse Investment Partners, LLCand 5 others13G/A4.06%1.48M shares−1.69 ppfrom 5.75%Below 5%Jun 30, 2026SEC
May 14, 20262:48 PM ETGlazer Capital, LLCand 1 other13G8.48%2.18M sharesNewMar 31, 2026SEC
May 14, 202610:43 AM ETLighthouse Investment Partners, LLCand 5 others13G5.75%1.48M sharesNewMar 31, 2026SEC
May 14, 20269:03 AM ETAristeia Capital LLC13G5.45%1.40M sharesNewMar 31, 2026SEC
May 13, 202610:35 AM ETAQR Capital Management LLCand 2 others13G8.48%2.18M sharesNewMar 31, 2026SEC
May 12, 20264:04 PM ETGoldman Sachs Group Incand 1 other13G5.70%1.47M sharesNewMar 31, 2026SEC
Apr 8, 20267:00 AM ETYakira Capital Management, Inc.and 5 others13G8.48%2.18M sharesNewMar 31, 2026SEC

Form 144: proposed insider sales

Notices from officers, directors and other affiliates planning to sell GigCapital9 Corp. shares.

No Form 144 notices for GigCapital9 Corp. are on file.