$MNTS

$2.15 +$0.03 (1.42%) Pre-market

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

Ownership

13F as of Q2 2026 · 22.0M shares outstanding

Who owns MNTS?

By type of holder

Institutions 30.2% Insiders 0.0% Everyone else 69.8%

Concentration Top 10 holders own 23.8%

ARK Investment Management LLC 10.9% · Davidson Kempner Capital Management LP 3.9%

Institutional ownership

30.2%

+12.8 pts vs last qtr

Institutional holders

+18 vs last qtr

Net shares bought

+2.8M

by institutions in Q2 2026

New / sold out

33 / 15

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

ARK Investment Management LLC +1.8M
Davidson Kempner Capital Management LP NEW +850.0K

Biggest sellers in Q2 2026

Diametric Capital, LP SOLD OUT −1.5M
Morgan Stanley −85.3K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Momentus Inc in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2024–FY2025

+638.0%

+638.00% a year

Each share's claim on the business

−86.4%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $9.77M

over 2 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years9% 3–5 years2% 1–3 years5% Under 1 year84%

Quarterly turnover

88.1%

of institutional shares changed hands

Top 10 managers, median time held

3 quarters

Super Investors

Investment managers reporting MNTS on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
AI ARK Investment Management LLC	2.4M	10.85%	+1.8M (+279.2%)	Q1 '26	0.0%
Shares held by quarter Peak holding2.4M (Q2'26) Change over 8 quarters+2.4M Share of the company10.850% ARK Investment Management LLC's full portfolio →
DC Diametric Capital, LP	—	—	SOLD OUT	—	0.0%
Shares held by quarter Peak holding1.5M (Q1'26) Change over 8 quarters0 Diametric Capital, LP's full portfolio →

ARK Investment Management LLC

2.4M

% of company

10.85%

Change vs last qtr

+1.8M (+279.2%)

Held since

Q1 '26

Diametric Capital, LP

—

% of company

—

Change vs last qtr

SOLD OUT

Held since

—

28 more super investors behind a free account

See every manager holding Momentus Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting MNTS on Form N-PORT; together they hold 1.5% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VE Vanguard Extended Market Index Fund Vanguard Index Funds	$778K	115.8K	0.53%	0.00%	June 30, 2026
FE Fidelity Extended Market Index Fund Fidelity Concord Street Trust	$238K	56.1K	0.26%	0.00%	August 31, 2026

Vanguard Extended Market Index Fund

Vanguard Index Funds

Position value

$778K

% of company

0.53%

% of the fund

0.00%

As of

June 30, 2026

Fidelity Extended Market Index Fund

Fidelity Concord Street Trust

Position value

$238K

% of company

0.26%

% of the fund

0.00%

As of

August 31, 2026

7 more funds behind a free account

See every fund holding Momentus Inc and how much of the fund the position is.

Comments