Helix Acquisition Corp. III
HLXC- Exchange
- Nasdaq
- Industry
- Blank Checks
- SEC CIK
- 0002099656
No open-market purchases or sales by Helix Acquisition Corp. III insiders were filed in the last 90 days; 40 institutions reported holding it in 13F filings for Q2 2026, worth $186.3M in total; no superinvestor holds it.
Holders of 5% or more of HLXC
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Helix Acquisition Corp. III, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Helix Holdings III LLC | 13D | 25.20%5.55M shares | New | Jan 30, 20261 filing | Jan 30, 2026 | SEC |
| Nantahala Capital Management, LLC | 13G | 8.33%1.25M shares | New | May 15, 20261 filing | May 15, 2026 | SEC |
| Affinity Asset Advisors, LLC | 13G | 7.00%1.25M shares | New | May 14, 20261 filing | May 14, 2026 | SEC |
| Ra Capital Management, L.P. | 13G | 7.00%1.25M shares | New | Feb 2, 20261 filing | Feb 2, 2026 | SEC |
| Balyasny Asset Management LLC | 13G/A | 6.97%1.24M shares | 0.00 ppfrom 6.97% | May 15, 20262 filings | Aug 14, 2026 | SEC |
| Silverarc Capital Management, LLC | 13G | 6.80%1.21M shares | New | May 13, 20261 filing | May 13, 2026 | SEC |
| ADAR1 Capital Management, LLC | 13G | 5.60%1.00M shares | New | May 15, 20261 filing | May 15, 2026 | SEC |
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 Helix Acquisition Corp. III, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 14, 20266:03 AM ET | Balyasny Asset Management LLCand 4 others | 13G/A | 6.97%1.24M shares | 0.00 ppfrom 6.97% | Jun 30, 2026 | SEC |
| May 15, 20267:59 PM ET | ADAR1 Capital Management, LLCand 1 other | 13G | 5.60%1.00M shares | New | Mar 31, 2026 | SEC |
| May 15, 20264:35 PM ET | Nantahala Capital Management, LLCand 2 others | 13G | 8.33%1.25M shares | New | Mar 31, 2026 | SEC |
| May 15, 20266:36 AM ET | Balyasny Asset Management LLCand 4 others | 13G | 6.97%1.24M shares | New | Mar 31, 2026 | SEC |
| May 14, 20264:08 PM ET | Affinity Asset Advisors, LLCand 1 other | 13G | 7.00%1.25M shares | New | Mar 31, 2026 | SEC |
| May 13, 20264:35 PM ET | Silverarc Capital Management, LLCand 1 other | 13G | 6.80%1.21M shares | New | Mar 31, 2026 | SEC |
| May 4, 20264:26 PM ET | Integrated Core Strategies (US) LLCand 3 others | 13G/A | 4.80%855.7K shares | −1.40 ppfrom 6.20%Below 5% | Mar 31, 2026 | SEC |
| Feb 2, 20264:30 PM ET | Ra Capital Management, L.P.and 3 others | 13G | 7.00%1.25M shares | New | Jan 26, 2026 | SEC |
| Jan 30, 20264:31 PM ET | Helix Holdings III LLCand 1 other | 13D | 25.20%5.55M shares | New | Jan 26, 2026 | SEC |
| Jan 30, 20264:25 PM ET | Integrated Core Strategies (US) LLCand 3 others | 13G | 6.20%1.10M shares | New | Jan 23, 2026 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Helix Acquisition Corp. III shares.
No Form 144 notices for Helix Acquisition Corp. III are on file.