Ownership

Who owns Octave Intelligence plc, from the filings themselves: stakes over 5% (Schedule 13D/G), the institutional managers reporting the stock each quarter (13F), and the funds holding it (N-PORT).

Stakes over 5%

Investors crossing 5% ownership must disclose it. Schedule 13G filers certify the stake is passive; Schedule 13D is the general form for everyone else — founders, strategic holders, and activists alike. Each entry is the holder's most recent disclosure. Coverage begins with SEC's structured filings from December 18, 2024; a holder appears once they file or amend after that date.

Melker Schorling AB, Melker Schorling Tjanste AB, MASCH Aktiebolag June 01, 2026

Melker Schorling AB: 21.8% · 58,433,144 shares — Melker Schorling Tjanste AB: 21.8% · 58,433,144 shares — MASCH Aktiebolag: 21.8% · 58,433,144 shares

View filing (SCHEDULE 13D)

Super investors holding OCTV

Every institutional manager whose latest 13F reports this stock, largest position first. "% of their portfolio" is the weight inside that manager's own book — how much conviction the position represents; "% of company" is how much of Octave Intelligence plc they hold. Together these 75 managers report 10.44% of shares outstanding.

Investor	Position value	Shares	% of their portfolio	% of company	As of
Madison Avenue Partners, LP	$68.8M	4,222,663	2.96%	1.57%	June 30, 2026
Koch, Inc.	$48.9M	3,000,000	4.47%	1.12%	June 30, 2026

73 more institutional holders behind a free account

See every manager reporting Octave Intelligence plc, how much of the company they hold, and how big the position is inside their own portfolio.

Funds holding OCTV

Funds disclosing this stock in their monthly N-PORT portfolio, with the position's share of the fund's net assets. Together these 2 funds hold 0.13% of shares outstanding — counted inside the manager totals above, not on top of them, since a fund's shares also appear in its manager's 13F.

Fund	Position value	% of net assets	% of company	As of
Needham Aggressive Growth Fund	$4.89M	0.19%	0.11%	June 30, 2026
Ancora/Thelen Small-Mid Cap Fund	$647K	0.27%	0.01%	June 30, 2026