Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.
Cerebras Systems Inc. (CBRS) is the issuer for which Jane Street Group, LLC and Jane Street Capital, LLC reported the same beneficial ownership position: 2,797,771 shares of Class A common stock, or 2.5% of the class. Both entities reported shared voting and dispositive power over that position, with zero sole voting or dispositive power. Jane Street Capital, LLC is identified as the subsidiary that acquired the reported securities and as a broker or dealer registered under Section 15.
Key Figures
Beneficial ownership:2.5%Beneficially owned shares:2,797,771 sharesShared voting power:2,797,771 shares+2 more
5 metrics
Beneficial ownership2.5%Percentage of the Class A common stock reported by each reporting entity
Beneficially owned shares2,797,771 sharesClass A common stock; the same position reported by both reporting entities
Shared voting power2,797,771 sharesReported by each reporting entity
Shared dispositive power2,797,771 sharesReported by each reporting entity
Sole voting and dispositive power0 sharesReported by each reporting entity
Key Terms
beneficially owned, shared voting power, shared dispositive power
3 terms
beneficially ownedregulatory
"Amount beneficially owned: 2,797,771.00"
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.
shared voting powerregulatory
"Shared Voting Power 2,797,771.00"
Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.
shared dispositive powerregulatory
"Shared Dispositive Power 2,797,771.00"
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
How many CBRS shares did Jane Street report owning?
Jane Street Group, LLC and Jane Street Capital, LLC each reported beneficial ownership of 2,797,771 shares of Class A common stock, or 2.5% of the class.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 1)
Cerebras Systems Inc.
(Name of Issuer)
Class A common stock, $0.00001 par value per share
(Title of Class of Securities)
15675D103
(CUSIP Number)
09/30/2026
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
schemaVersion:
SCHEDULE 13G
CUSIP Number(s):
15675D103
1
Names of Reporting Persons
JANE STREET GROUP, LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
2,797,771.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
2,797,771.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
2,797,771.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
2.5 %
12
Type of Reporting Person (See Instructions)
HC
SCHEDULE 13G
CUSIP Number(s):
15675D103
1
Names of Reporting Persons
Jane Street Capital, LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
2,797,771.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
2,797,771.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
2,797,771.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
2.5 %
12
Type of Reporting Person (See Instructions)
BD
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
Cerebras Systems Inc.
(b)
Address of issuer's principal executive offices:
1237 E. ARQUES AVE., 1237 E. ARQUES AVE., SUNNYVALE, CALIFORNIA, 94085.
Item 2.
(a)
Name of person filing:
Jane Street Group, LLC
Jane Street Capital, LLC
(b)
Address or principal business office or, if none, residence:
Jane Street Group, LLC
250 Vesey Street 3rd Floor
New York, NY 10281
Jane Street Capital, LLC
250 Vesey Street 3rd Floor
New York, NY 10281
(c)
Citizenship:
See Item 4 of Cover Page.
(d)
Title of class of securities:
Class A common stock, $0.00001 par value per share
(e)
CUSIP No.:
15675D103
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
2,797,771.00
(b)
Percent of class:
2.5%
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
0
(ii) Shared power to vote or to direct the vote:
2,797,771.00
(iii) Sole power to dispose or to direct the disposition of:
0
(iv) Shared power to dispose or to direct the disposition of:
2,797,771.00
Item 5.
Ownership of 5 Percent or Less of a Class.
Ownership of 5 percent or less of a class
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
Not Applicable
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary.
Subsidiary
Jane Street Capital, LLC - (a) Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o)
Item 8.
Identification and Classification of Members of the Group.
Not Applicable
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
