Southport Acquisition Corporation
Southport Acquisition Corporation (PORT) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · PORT · as of Mar 31, 2024
Ownership Breakdown
2
Institutional Holders
▼ 18 vs Q4
$7.57M
Total Inst. Value
▼ $33.04M vs Q4
5.79M
Shares Outstanding
freeFloat 0.90%
701,000
13F Shares Held
▼ 3.12M vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
PORT largest shareholders · institutional ownership
Q1 2024 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
RIVERNORTH CAPITAL MANAGEMENT, LLC blank checks | 700.0K | 12.17% | 12.17% | $7.56B | May 15, 2024 | — held |
CLEAR STREET LLC blank checks | 1.0K | 1.74% | 1.74% | $10.80M | May 15, 2025 | ▲ 653 |
CANTOR FITZGERALD, L. P. blank checks | 0 | 0.00% | 0.00% | $0 | May 15, 2024 | EXIT |
RADCLIFFE CAPITAL MANAGEMENT, L.P. blank checks | 0 | 0.00% | 0.00% | $0 | May 15, 2024 | EXIT |
POLAR ASSET MANAGEMENT PARTNERS INC. blank checks | 0 | 0.00% | 0.00% | $0 | May 15, 2024 | EXIT |
WALLEYE TRADING LLC blank checks | 0 | 0.00% | 0.00% | $0 | May 15, 2024 | EXIT |
FLOW TRADERS U.S. LLC blank checks | 0 | 0.00% | 0.00% | $0 | May 15, 2024 | EXIT |
VIRTU FINANCIAL LLC blank checks | 0 | 0.00% | 0.00% | $0 | May 20, 2024 | EXIT |
BOOTHBAY FUND MANAGEMENT, LLC blank checks | 0 | 0.00% | 0.00% | $0 | May 15, 2024 | EXIT |
TUTTLE CAPITAL MANAGEMENT, LLC blank checks | 0 | 0.00% | 0.00% | $0 | Apr 11, 2024 | EXIT |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2024 vs prior quarter
Q1 2024
1
Increased
+653 shares0
New Positions
first time holders0
Decreased
−0 shares17
Sold Out
fully exitedNet shares change (top 50)
+653
+653 / −0
Net new holders
-16
0 new / 17 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
PORT insider trading · insider activity
Source: SEC Form 4
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
GALLIGAN THOMAS J III director | Jul 31, 2003 | D-Return | 4,000 | $38.25 | $153.0K | 0 | Form 4 ↗ |
GALLIGAN THOMAS J III director | Jul 31, 2003 | D-Return | 600 | $54.00 | $32.4K | 0 | Form 4 ↗ |
BEAMS MALIZ E director | Jul 31, 2003 | D-Return | 600 | $54.00 | $32.4K | 0 | Form 4 ↗ |
BEAMS MALIZ E director | Jul 31, 2003 | D-Return | 4,000 | $38.25 | $153.0K | 0 | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Southport Acquisition Corporation (PORT) is primarily owned by institutional investors, who hold approximately 12.1% of total shares outstanding. Company insiders own approximately 99.10%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Southport Acquisition Corporation is RIVERNORTH CAPITAL MANAGEMENT, LLC, holding approximately 700,000 shares — equal to 12.17% of outstanding shares — as of March 31, 2024.
A total of 2 institutional investors currently hold PORT stock, with a combined institutional value of approximately $7,570,800 as of the most recent 13F filing period.
Frequently asked questions
PORT ownershipSouthport Acquisition Corporation (PORT) is primarily owned by institutional investors, who hold approximately 12.1% of shares. The largest shareholder is RIVERNORTH CAPITAL MANAGEMENT, LLC with a 12.17% stake. Company insiders hold 99.10%. Data sourced from SEC Form 13F as of March 31, 2024.