$HLXC

$10.29 -$0.01 (0.1%) Close

$HLXC Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 22.1M shares outstanding

Who owns HLXC?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 290.0%

BlackRock, Inc. 66.2% · Balyasny Asset Management L.P. 36.7%

Institutional ownership

100.0%

0 pts vs last qtr

Institutional holders

411

+2 vs last qtr

Net shares bought

+1.9M

by institutions in Q2 2026

New / sold out

48 / 46

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Pentwater Capital Management LP +3.7M
Norges Bank NEW +2.3M

Biggest sellers in Q2 2026

HBK Investments L P −2.6M
Zimmer Partners, LP SOLD OUT −1.5M

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Helix Acquisition Corp III in the last 12 months.

Is your stake being diluted?

There are not yet two fiscal years of reported share counts for Helix Acquisition Corp III.

How patient are the owners?

Institutional shares by how long they've been held

5+ years43% 3–5 years10% 1–3 years27% Under 1 year20%

Quarterly turnover

13.6%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting HLXC on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	14.6M	66.16%	+1.2M (+9.2%)	≤2021	0.0%
Shares held by quarter Peak holding14.6M (Q2'26) Change over 8 quarters+1.4M Share of the company66.160% BlackRock, Inc.'s full portfolio →
BA Balyasny Asset Management L.P.	8.1M	36.73%	−20.5K (−0.3%)	2022	0.5%
Shares held by quarter Peak holding8.1M (Q1'26) Change over 8 quarters+7.7M Share of the company36.730% Balyasny Asset Management L.P.'s full portfolio →

BlackRock, Inc.

14.6M

% of company

66.16%

Change vs last qtr

+1.2M (+9.2%)

Held since

≤2021

Balyasny Asset Management L.P.

8.1M

% of company

36.73%

Change vs last qtr

−20.5K (−0.3%)

Held since

2022

28 more super investors behind a free account

See every manager holding Helix Acquisition Corp III, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting HLXC on Form N-PORT; together they hold 162.3% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$200M	3.5M	15.93%	0.01%	June 30, 2026
IC iShares Core S&P Mid-Cap ETF iShares Trust	$194M	3.4M	15.46%	0.16%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$200M

% of company

15.93%

% of the fund

0.01%

As of

June 30, 2026

iShares Core S&P Mid-Cap ETF

iShares Trust

Position value

$194M

% of company

15.46%

% of the fund

0.16%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Helix Acquisition Corp III and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
HH Helix Holdings III LLC 5%+ holder 13D · 21.5%	4.8M	21.53%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company21.530% Disclosed stake13D · 21.5% View the 13D/G filing →

Helix Holdings III LLC

5%+ holder13D · 21.5%

4.8M

% of company

21.53%

Change vs last qtr

—

Held since

—

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