Avanza Pension reports 9.88% stake in Hyperion DeFi (NASDAQ: HYPD)

Rhea-AI Filing Summary

Hyperion DeFi, Inc. received an amended Schedule 13G/A reporting that Forsakringsaktiebolaget Avanza Pension beneficially owns 1,125,785 shares of Common Stock, representing 9.88% of the class. The filing shows sole voting power of 1,125,785 shares and shared dispositive power of 1,125,785 shares. The amendment is signed by Marie Karlsfeldt on 04/01/2026.

Insights

Institutional Ownership Analyst

Large passive holder reports a near-10% stake with voting control over its shares.

Forsakringsaktiebolaget Avanza Pension is recorded as beneficial owner of 1,125,785 shares (9.88%). The filing lists sole voting power of the same amount, indicating the filer can direct votes for these shares.

Cash-flow treatment or plans to trade are not stated; subsequent amendments or Forms 13D/13G could show changes in intent or ownership.

Key Figures

Beneficial ownership: 1,125,785 shares Percent of class: 9.88% Sole voting power: 1,125,785 shares +3 more

6 metrics

Beneficial ownership 1,125,785 shares Amount beneficially owned as reported in Schedule 13G/A

Percent of class 9.88% Percent of common stock reported in the filing

Sole voting power 1,125,785 shares Number of shares with sole power to vote as reported

Sole dispositive power 0 shares Number of shares with sole power to dispose as reported

Shared dispositive power 1,125,785 shares Number of shares with shared power to dispose as reported

Signature date 04/01/2026 Date the amendment was signed by Marie Karlsfeldt

Key Terms

Schedule 13G/A, beneficially owned, sole voting power, dispositive power

4 terms

Schedule 13G/A regulatory

"amended Schedule 13G/A reporting beneficial ownership"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

beneficially owned financial

"Amount beneficially owned: 1,125,785"

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.

sole voting power regulatory

"Sole Voting Power 1,125,785.00"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

dispositive power regulatory

"Shared Dispositive Power 1,125,785.00"

Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.

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Accepted by SEC EDGAR 04/01/2026 - 08:33 AM Learn about SEC filing dates

FAQ

What stake does Forsakringsaktiebolaget Avanza Pension report in HYPD?

The filer reports beneficial ownership of 1,125,785 shares, equal to 9.88% of Hyperion DeFi's common stock. The figure appears in the amended Schedule 13G/A signed on 04/01/2026.

Does Avanza Pension have voting or dispositive power over those HYPD shares?

Yes. The filing shows sole voting power of 1,125,785 shares and shared dispositive power of 1,125,785 shares. Sole dispositive power is reported as zero in the document.

Is this filing an acquisition or a change in intent (Schedule 13G/A)?

This is an amended Schedule 13G/A, which typically reports passive ownership or updated holdings. The filing amends prior disclosure but does not state an active acquisition plan in the excerpt.

When was the Schedule 13G/A signed for HYPD by Avanza Pension?

The amendment is signed by Marie Karlsfeldt with a signature date of 04/01/2026. The cover header also references 03/30/2026 in the filing excerpt.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 4)

HYPERION DEFI, INC.

(Name of Issuer)

COMMON STOCK, PAR VALUE $0.001 PER SHARE

(Title of Class of Securities)

30234E203

(CUSIP Number)

03/30/2026

(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): 30234E203

1

Names of Reporting Persons

Forsakringsaktiebolaget Avanza Pension

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

SWEDEN

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,125,785.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,125,785.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,125,785.00

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)

9.88 %

12

Type of Reporting Person (See Instructions)

IC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: HYPERION DEFI, INC.
(b)	Address of issuer's principal executive offices: 295 Madison Avenue, Suite 2400, New York NY, 10017
Item 2.
(a)	Name of person filing: Forsakringsaktiebolaget Avanza Pension
(b)	Address or principal business office or, if none, residence: Box 1399 STOCKHOLM, 11139 SWEDEN
(c)	Citizenship: Forsakringsaktiebolaget Avanza Pension is a company organized under the laws of Sweden
(d)	Title of class of securities: COMMON STOCK, PAR VALUE $0.001 PER SHARE
(e)	CUSIP No.:
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).
	Insurance company
Item 4.	Ownership
(a)	Amount beneficially owned: 1,125,785
(b)	Percent of class: 9,88
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 1,125,785
	(ii) Shared power to vote or to direct the vote: None
	(iii) Sole power to dispose or to direct the disposition of: None
	(iv) Shared power to dispose or to direct the disposition of: 1,125,785
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
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.
	Not Applicable
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.

Forsakringsaktiebolaget Avanza Pension

Signature:	/s/ Marie Karlsfeldt
Name/Title:	Marie Karlsfeldt / Middle Office
Date:	04/01/2026