Exhibit 8.1

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MARTIN LIPTON HERBERT M. WACHTELL EDWARD D. HERLIHY DANIEL A. NEFF STEVEN A. ROSENBLUM SCOTT K. CHARLES JODI J. SCHWARTZ ADAM O. EMMERICH RALPH M. LEVENE ROBIN PANOVKA DAVID A. KATZ ILENE KNABLE GOTTS ANDREW J. NUSSBAUM RACHELLE SILVERBERG STEVEN A. COHEN DEBORAH L. PAUL DAVID C. KARP RICHARD K. KIM JOSHUA R. CAMMAKER MARK GORDON JEANNEMARIE O’BRIEN | STEPHEN R. DiPRIMA NICHOLAS G. DEMMO IGOR KIRMAN JONATHAN M. MOSES T. EIKO STANGE WILLIAM SAVITT GREGORY E. OSTLING DAVID B. ANDERS ADAM J. SHAPIRO NELSON O. FITTS JOSHUA M. HOLMES DAMIAN G. DIDDEN IAN BOCZKO MATTHEW M. GUEST DAVID E. KAHAN DAVID K. LAM BENJAMIN M. ROTH JOSHUA A. FELTMAN ELAINE P. GOLIN EMIL A. KLEINHAUS KARESSA L. CAIN | 51 WEST 52ND STREET NEW YORK, N.Y. 10019-6150 TELEPHONE: (212) 403-1000 FACSIMILE: (212) 403-2000 ​ | RONALD C. CHEN BRADLEY R. WILSON GRAHAM W. MELI GREGORY E. PESSIN CARRIE M. REILLY MARK F. VEBLEN SARAH K. EDDY VICTOR GOLDFELD RANDALL W. JACKSON BRANDON C. PRICE KEVIN S. SCHWARTZ MICHAEL S. BENN ALISON Z. PREISS TIJANA J. DVORNIC JENNA E. LEVINE RYAN A. McLEOD ANITHA REDDY JOHN L. ROBINSON STEVEN WINTER EMILY D. JOHNSON JACOB A. KLING | RAAJ S. NARAYAN VIKTOR SAPEZHNIKOV MICHAEL J. SCHOBEL ELINA TETELBAUM ERICA E. AHO LAUREN M. KOFKE RACHEL B. REISBERG MARK A. STAGLIANO CYNTHIA FERNANDEZ LUMERMANN CHRISTINA C. MA NOAH B. YAVITZ BENJAMIN S. ARFA NATHANIEL D. CULLERTON ERIC M. FEINSTEIN ADAM L. GOODMAN STEVEN R. GREEN MENG LU
​ | ​ | GEORGE A. KATZ (1965–1989) JAMES H. FOGELSON (1967–1991) LEONARD M. ROSEN (1965–2014) OF COUNSEL | ​ | ​
​ | ​ | DAVID M. ADLERSTEIN ANDREW R. BROWNSTEIN WAYNE M. CARLIN BEN M. GERMANA SELWYN B. GOLDBERG PETER C. HEIN JB KELLY JOSEPH D. LARSON RICHARD G. MASON PHILIP MINDLIN THEODORE N. MIRVIS DAVID S. NEILL TREVOR S. NORWITZ | ERIC S. ROBINSON ERIC M. ROSOF JOHN F. SAVARESE MICHAEL J. SEGAL WON S. SHIN DAVID M. SILK ELLIOTT V. STEIN LEO E. STRINE, JR.* PAUL VIZCARRONDO, JR. JEFFREY M. WINTNER AMY R. WOLF MARC WOLINSKY | ​ | ​
​ | ​ | * ADMITTED IN DELAWARE COUNSEL | ​ | ​
​ | ​ | SUMITA AHUJA LOREN BRASWELL HEATHER D. CASTEEL FRANCO CASTELLI ANDREW J.H. CHEUNG PAMELA EHRENKRANZ ALINE R. FLODR KATHRYN GETTLES-ATWA LEDINA GOCAJ ADAM M. GOGOLAK ANGELA K. HERRING ​ | MICHAEL W. HOLT DONGHWA KIM MARK A. KOENIG J. AUSTIN LYONS ALEXANDER S. MACKLER ALICIA C. McCARTHY JUSTIN R. ORR JOSEPH S. PAYNE NEIL M. SNYDER JEFFREY A. WATIKER | ​ | ​

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July 14, 2025

Southport Acquisition Corporation

268 Post Road, Suite 200

Fairfield, Connecticut 06824

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Ladies and Gentlemen:

We have acted as counsel to Southport Acquisition Corporation (“Acquiror”), in connection with the proposed merger (the “Merger”) of Sigma Merger Sub, Inc., a Delaware corporation and a direct wholly owned subsidiary of Acquiror (“Merger Sub”), with and into Angel Studios, Inc., a Delaware corporation (the “Company”), pursuant to the Agreement and Plan of Merger, dated as of September 11, 2024, by and among Acquiror, Merger Sub and the Company (the “Agreement”). Capitalized terms used but not defined herein shall have the meanings ascribed to them in the Agreement or the Registration Statement (as defined below). At your request, and in connection with the effectiveness of the Form S-4 (including the joint proxy statement/prospectus contained therein, as amended or supplemented through the date hereof, the “Registration Statement”), we are rendering our opinion concerning certain United States federal income tax matters.

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In providing our opinion, we have examined the Agreement, the Registration Statement and such other documents, records and papers as we have deemed necessary or appropriate in order to give the opinion set forth herein. In addition, we have assumed that: (i) the transaction will be consummated in accordance with the provisions of the Agreement and as described in the Registration Statement (and no covenants or conditions described therein and affecting this opinion will be waived or modified), (ii) the Agreement, the Registration Statement, and the statements concerning the transaction and the parties thereto set forth in the Agreement and the Registration Statement, in each case, are true, complete and correct and will remain true, complete and correct at all times up to and including the Effective Time, (iii) all such statements qualified by knowledge, belief or materiality or comparable qualification are and will be true, complete and correct as if made without such qualification, (iv) all documents submitted to us as originals are authentic, all documents submitted to us as copies conform to the originals, all relevant documents have been or will be duly executed in the form presented to us and all natural persons who have executed such documents are of legal capacity, (v) all applicable reporting requirements have been or will be satisfied and (vi) Acquiror, the Company and their respective subsidiaries will treat the Merger for United States federal income tax purposes in a manner consistent with the opinion set forth below. If any of the above described assumptions is untrue for any reason, or if the transaction is consummated in a manner that is different from the manner described in the Agreement and the Registration Statement, our opinion as expressed below may be adversely affected.

Based upon and subject to the foregoing and the exceptions, limitations and qualifications described in the Registration Statement, we are of the opinion that under currently applicable United States federal income tax law, the discussion in the section of the Registration Statement entitled “U.S. FEDERAL INCOME TAX CONSIDERATIONS—U.S. Federal Income Tax Considerations of the Business Combination for holders of ASI Common Stock” constitutes our opinion as to the material U.S. federal income tax consequences of the Merger to holders of ASI Common Stock.

We express no opinion on any issue or matter relating to the tax consequences of the transactions contemplated by the Agreement or the Registration Statement other than the opinion set forth above. Our opinion is based on current provisions of the Internal Revenue Code of 1986, as amended, Treasury Regulations promulgated thereunder, published pronouncements of the Internal Revenue Service and case law, any of which may be changed at any time with retroactive effect. Any change in applicable laws or the facts and circumstances surrounding the transaction, or any inaccuracy in the statements, facts, or assumptions upon which we have relied, may affect the continuing validity of our opinion as set forth herein. We assume no responsibility to inform Acquiror or the Company of any such change or inaccuracy that may occur or come to our attention.

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We are furnishing this opinion solely in connection with the filing of the Registration Statement. We hereby consent to the filing of this opinion with the Securities and Exchange Commission as an exhibit to the Registration Statement, and to the references therein to us. In giving such consent, we do not thereby admit that we are in the category of persons whose consent is required under Section 7 of the Securities Act of 1933, as amended.

​ | Very truly yours,
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​ | /s/ Wachtell, Lipton, Rosen & Katz

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