UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

(Rule 13d-101)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO

§ 240.13d-2(a)

(Amendment No. )¹

Pioneer Merger Corp.

(Name of Issuer)

Class A ordinary shares, $0.0001 par value

(Title of Class of Securities)

G7S24C103

(CUSIP Number)

Jacob Ma-Weaver

Cable Car Capital LLC

2261 Market Street #4307

San Francisco, California 94114

(415) 857-1965

(Name, Address and Telephone Number of Person

Authorized to Receive Notices and Communications)

December 20, 2022

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box ¨.

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See § 240.13d-7 for other parties to whom copies are to be sent.

1 The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No. G7S24C103


	1	NAME OF REPORTING PERSON

			Funicular Funds, LP
	2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP				(a) ☐
						(b) ☐

	3	SEC USE ONLY


	4	SOURCE OF FUNDS

			WC
	5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)				☐


	6	CITIZENSHIP OR PLACE OF ORGANIZATION

			Delaware
NUMBER OF			7	SOLE VOTING POWER
SHARES
BENEFICIALLY					2,516,534
OWNED BY			8	SHARED VOTING POWER
EACH
REPORTING					0
PERSON WITH			9	SOLE DISPOSITIVE POWER

					2,516,534
			10	SHARED DISPOSITIVE POWER

					0
	11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

			2,516,534
	12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES				☐


	13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

			6.3%
	14	TYPE OF REPORTING PERSON

			PN

CUSIP No. G7S24C103


	1	NAME OF REPORTING PERSON

			Jacob Ma-Weaver
	2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP				(a) ☐
						(b) ☐

	3	SEC USE ONLY


	4	SOURCE OF FUNDS

			OO
	5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)				☐


	6	CITIZENSHIP OR PLACE OF ORGANIZATION

			USA
NUMBER OF			7	SOLE VOTING POWER
SHARES
BENEFICIALLY					2,516,534
OWNED BY			8	SHARED VOTING POWER
EACH
REPORTING					0
PERSON WITH			9	SOLE DISPOSITIVE POWER

					2,516,534
			10	SHARED DISPOSITIVE POWER

					0
	11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

			2,516,534
	12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES				☐


	13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

			6.3%
	14	TYPE OF REPORTING PERSON

			IN

CUSIP No. G7S24C103

Item 1.

Security and Issuer

The security to which this statement relates is the Class A ordinary shares, $0.0001 par value (the “Shares”), of Pioneer Merger Corp. (the “Issuer”), whose principal executive offices are located at 667 Madison Avenue, 19^th Floor, New York, New York 10065.

Item 2.

Identity and Background

(a) This statement is being filed by Funicular Funds, LP (the “Fund”), a Delaware limited partnership, with respect to Shares beneficially owned and held of record by the Fund. The General Partner of the Fund is Cable Car Capital LLC (“Cable Car”), a California limited liability company which serves as investment adviser to the Fund pursuant to a written advisory agreement. Jacob Ma-Weaver, a United States citizen, is the Managing Member of Cable Car and the ultimate individual responsible for directing the voting and disposition of shares held by the Fund.

Each of the Fund and Mr. Ma-Weaver are referred to as a “Reporting Person” and collectively as the “Reporting Persons.”

(b) The principal business address for the Reporting Persons and Cable Car is 2261 Market Street #4307, San Francisco, California 94114.

(c) The Fund is a private investment partnership whose principal business is investing and trading in securities. Cable Car is an investment adviser registered with the state securities authority of California. Its principal business is investment management. Mr. Ma-Weaver has sole discretionary authority over the accounts of the Fund.

(d) During the last five years, none of the Reporting Persons nor Cable Car have been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).

(e) During the last five years, none of the Reporting Persons nor Cable Car have been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding been subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

Item 3.

Source and Amount of Funds or Other Considerations

The Shares to which this Schedule 13D relates were acquired for an aggregate purchase price of $25,439,679 inclusive of brokerage commissions. Funds for the purchase were obtained from the available working capital of the Fund. Although the Fund has the ability to obtain margin loans in the ordinary course of its business, no part of the purchase price was obtained on margin or through any other borrowings.

Item 4.

Purpose of Transaction

On December 21, 2022, the Reporting Persons discussed with a representative of the Issuer the stated intent of its sponsor to improperly arrogate for itself and related parties a $32.5 million termination fee payment that the Issuer received from Acorns Grow Incorporated. The Reporting Persons recommended that the sponsor reconsider its plans, which if implemented would violate its legal and contractual duties owed to the Issuer, and advised that the Reporting Persons will otherwise consider all available legal remedies to protect the interests of stockholders.

CUSIP No. G7S24C103

The Reporting Persons purchased the Shares based on the Reporting Persons’ belief that the Shares, when purchased, were undervalued and represented an attractive investment opportunity. Depending upon overall market conditions, other investment opportunities available to the Reporting Persons, and the availability of Shares at prices that would make the purchase or sale of Shares desirable, the Reporting Persons may endeavor to increase or decrease their position in the Issuer through, among other things, the purchase or sale of Shares on the open market or in private transactions or otherwise, on such terms and at such times as the Reporting Persons may deem advisable.

No Reporting Person has any present plan or proposal which would relate to or result in any of the matters set forth in subparagraphs (a) - (j) of Item 4 of Schedule 13D except as set forth herein or such as would occur upon or in connection with completion of, or following, any of the actions discussed herein. The Reporting Persons intend to review their investment in the Issuer on a continuing basis. Depending on various factors including, without limitation, the Issuer’s financial position and investment strategy, the price levels of the Shares, conditions in the securities markets and general economic and industry conditions, the Reporting Persons may in the future take such actions with respect to their investment in the Issuer as they deem appropriate including, without limitation, engaging in communications with management and the Board of Directors of the Issuer, engaging in discussions with stockholders of the Issuer or other third parties about the Issuer and the Reporting Persons’ investment, including potential business combinations or dispositions involving the Issuer or certain of its businesses, making recommendations or proposals to the Issuer concerning changes to the capitalization, ownership structure, board structure (including board composition), potential business combinations or dispositions involving the Issuer or certain of its businesses, or suggestions for improving the Issuer’s financial and/or operational performance, purchasing additional Shares, selling some or all of their Shares, engaging in short selling of or any hedging or similar transaction with respect to the Shares, including swaps and other derivative instruments, or changing their intention with respect to any and all matters referred to in Item 4.

Item 5.

Interest in Securities of the Issuer

(a) The aggregate percentage of Shares reported owned by the Reporting Persons is based on 40,250,000 shares outstanding as of November 9, 2022, which is the total number of shares outstanding as reported on the cover page of the Issuer’s Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on November 10, 2022. As of the close of business on December 30, 2022, the Fund beneficially owned 2,516,534 Shares. Cable Car, as the General Partner of the Fund, may be deemed the beneficial owner of the 2,516,534 Shares owned by the Fund. Mr. Ma-Weaver, as the Managing Member of Cable Car, may be deemed the beneficial owner of the 2,516,534 Shares owned by the Fund.

(b) The Fund has sole voting and dispositive power over the Shares reported herein.

(c) The transactions in the Shares by the Fund during the past sixty days are set forth in Schedule A and are incorporated herein by reference. None of Cable Car or Mr. Ma-Weaver have entered into any transactions in the Shares during the past sixty days. Each Reporting Person and Cable Car disclaims beneficial ownership of such Shares except to the extent of his or its pecuniary interest therein.

(d) No person other than the Reporting Persons is known to have the right to receive, or the power to direct the receipt of dividends from, or proceeds from the sale of, the Shares.

(e) Not applicable.

CUSIP No. G7S24C103

Item 6.

Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer

There are no contracts, arrangements, understandings, or relationships between the Reporting Persons and any other person with respect to the securities of the Issuer.

Item 7.

Material to Be Filed as Exhibits

None.

CUSIP No. G7S24C103

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.

Dated: December 30, 2022

Funicular Funds, LP

By:	/s/ Jacob Ma-Weaver
	Name:	Jacob Ma-Weaver
	Title:	Managing Member of the General Partner

	/s/ Jacob Ma-Weaver
	Jacob Ma-Weaver

CUSIP No. G7S24C103

SCHEDULE A

TRANSACTIONS IN SECURITIES OF THE ISSUER
DURING THE PAST 60 DAYS

Nature of the Transaction	Securities Purchased/(Sold)	Price ($)	Date of Purchase / Sale
Purchase of Class A Ordinary Shares	66,099	10.1050	12/15/2022
Purchase of Class A Ordinary Shares	1,085,653	10.1084	12/16/2022
Purchase of Class A Ordinary Shares	76,304	10.1050	12/19/2022
Purchase of Class A Ordinary Shares	1,286,485	10.1100	12/20/2022
Purchase of Units	1,993	10.1050	12/20/2022

Pioneer Merger Corp. SC 13D