$CBRS

$118.56 -$0.75 (0.63%) After hours

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

Ownership

13F as of Q2 2026 · 151.0M shares outstanding

Who owns CBRS?

By type of holder

Institutions 54.2% Insiders 0.0% Everyone else 45.8%

Concentration Top 10 holders own 38.9%

Eclipse Operations, LLC 7.6% · Lior Susan 6.3%

Institutional ownership

54.2%

+54.2 pts vs last qtr

Institutional holders

414

+414 vs last qtr

Net shares bought

+81.8M

by institutions in Q2 2026

New / sold out

414 / 0

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Eclipse Operations, LLC NEW +11.4M
FMR LLC NEW +8.4M

Biggest sellers in Q2 2026

None.

Who is planning to sell?

Notices of proposed sale, last 12 months

$391M

14 notices from 9 people

Shares covered

1.9M

1.23% of the company

Arranged in advance

89%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Sean Lie Officer 10b5-1 $192M
Dhiraj Mallick Officer 10b5-1 $77.9M

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

There are not yet two fiscal years of reported share counts for Cerebras Systems Inc.

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years0% 1–3 years0% Under 1 year100%

Quarterly turnover

—

of institutional shares changed hands

Top 10 managers, median time held

0 quarters

Super Investors

Investment managers reporting CBRS on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
EO Eclipse Operations, LLC	11.4M	7.58%	NEW	Q2 '26	98.3%
Shares held by quarter Peak holding11.4M (Q2'26) Change over 8 quarters+11.4M Share of the company7.580% Eclipse Operations, LLC's full portfolio →
F FMR LLC	8.4M	5.59%	NEW	Q2 '26	0.1%
Shares held by quarter Peak holding8.4M (Q2'26) Change over 8 quarters+8.4M Share of the company5.590% FMR LLC's full portfolio →

Eclipse Operations, LLC

11.4M

% of company

7.58%

Change vs last qtr

NEW

Held since

Q2 '26

FMR LLC

8.4M

% of company

5.59%

Change vs last qtr

NEW

Held since

Q2 '26

23 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting CBRS on Form N-PORT; together they hold 16.3% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
GF Growth Fund American Funds Insurance Series	$495M	2.2M	1.49%	0.87%	June 30, 2026
FA Fidelity Advisor Growth Opportunities Fund Fidelity Advisor Series I	$384M	2.1M	1.38%	1.12%	August 31, 2026

Growth Fund

American Funds Insurance Series

Position value

$495M

% of company

1.49%

% of the fund

0.87%

As of

June 30, 2026

Fidelity Advisor Growth Opportunities Fund

Fidelity Advisor Series I

Position value

$384M

% of company

1.38%

% of the fund

1.12%

As of

August 31, 2026

23 more funds behind a free account

See every fund holding Cerebras Systems Inc 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
LS Lior Susan 5%+ holder 13D · 4.3%	9.6M	6.33%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company6.330% Disclosed stake13D · 4.3% View the 13D/G filing →
ES Eclipse SPV II, L.P. 5%+ holder 13D · 2.0%	4.5M	2.96%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company2.960% Disclosed stake13D · 2.0% View the 13D/G filing →

Lior Susan

5%+ holder13D · 4.3%

9.6M

% of company

6.33%

Change vs last qtr

—

Held since

—

Eclipse SPV II, L.P.

5%+ holder13D · 2.0%

4.5M

% of company

2.96%

Change vs last qtr

—

Held since

—

5 more holders behind a free account

See every insider and 5%+ holder of Cerebras Systems Inc.

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